| 单词 | magnetic field |
| 例句 | For Saturn as for Jupiter, the magnetic field captures and accelerates the charged particles of the solar wind. Cosmos 1980-01-01T00:00:00Z Confining ions in a magnetic field for about one hundred orbits was practical. Big Science 2015-07-07T00:00:00Z With no magnetic field, Mars has no defense against harsh solar radiation. The Martian 2011-01-01T00:00:00Z Physicists concluded that light was not a particle, but a wave of electric and magnetic fields. Zero: The Biography of a Dangerous Idea 2000-02-07T00:00:00Z “That’s the point. According to Grumman, the earth’s magnetic field changed dramatically at various times in the past, and the earth’s axis actually moved, too, so that temperate areas became ice-bound.” The Subtle Knife 1997-01-01T00:00:00Z “It probably won’t work outside your apartment, because the magnetic field of the bed gets smaller the farther you get from it, but still.” Extremely Loud and Incredibly Close 2005-04-01T00:00:00Z When I was a kid, Mom slept in air thin and nervous as a magnetic field, attracting small disturbances. Dreaming in Cuban 1992-01-01T00:00:00Z Venus didn’t have any moons or satellites or even a magnetic field, but it did have an atmosphere sort of similar to Earth’s, except it was super- hot—about five hundred degrees or more. The Glass Castle 2005-03-01T00:00:00Z She found the longitude of the Atlantic flyway, the migrating route of the birds of the east, and the magnetic field of the earth. Frightful's Mountain 2001-05-21T00:00:00Z “Something to do with a field. Like a magnetic field, I s’pose. They sound like experimental theologians.” The Book of Dust: La Belle Sauvage 2017-10-19T00:00:00Z She felt tiny iron particles in her brain lining up with the earth’s magnetic field. Frightful's Mountain 2001-05-21T00:00:00Z But how to construct a revolving magnetic field in the back of a four-wheel drive? Artemis Fowl 2001-04-26T00:00:00Z The sunspots, sometimes visible to the naked eye at sunset, are cooler regions of enhanced magnetic field strength. Cosmos 1980-01-01T00:00:00Z When a galvanometer detected a signal, it created a magnetic field. A Deadly Wandering: A Mystery, a Landmark Investigation, and the Astonishing Science of Attention in the Digital Age 2014-09-23T00:00:00Z As the matter spirals into the black hole, it would make the black hole rotate in the same direction, causing it to develop a magnetic field rather like that of the earth. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z Only one problem: Mars doesn't have a magnetic field. The Martian 2011-01-01T00:00:00Z —Phathmus Mouzaive: natural philosopher; liked to declare that his field was no less than “the physical laws of the universe,” but whose focus, in reality, was somewhat narrower: magnetic fields. Strange the Dreamer 2017-03-28T00:00:00Z These charged particles are ejected from the Sun in the solar wind and captured and accelerated by Jupiter’s magnetic field. Cosmos 1980-01-01T00:00:00Z When the magnetic field is working, these rays are safely herded away from the Earth’s surface and into two zones in near space called the Van Allen belts. A Short History of Nearly Everything 2003-05-06T00:00:00Z And Luna knew this and understood it, but now she felt that there was another magnetic field and another compass that her grandmother had never told her about. The Girl Who Drank the Moon 2016-08-09T00:00:00Z But without the proper magnetic field strength, it exploded outward instead. Darius the Great Is Not Okay 2018-08-28T00:00:00Z Instead, he concluded, irregularities in the magnetic field were driving the proton beam out of resonance. Big Science 2015-07-07T00:00:00Z The dees’ interior was to be free of any electrical field, which he thought would interfere with the magnetic field keeping the particles in their spiral. Big Science 2015-07-07T00:00:00Z Stern’s expertise was the action of magnetic fields on atoms and subatomic particles. Big Science 2015-07-07T00:00:00Z She needed both the sun’s rays and the magnetic field to plot her course. Frightful's Mountain 2001-05-21T00:00:00Z Mesarthium was at the center of this mystery, so that was where he was going—to the anchor, as though Mouzaive’s invisible magnetic fields were pulling him there. Strange the Dreamer 2017-03-28T00:00:00Z For billions of years they would have heard only weak and intermittent radio static caused by lightning and the trapped electrons and protons whistling within the Earth’s magnetic field. Cosmos 1980-01-01T00:00:00Z Its powerful magnetic field, amplified during the collapse, traps charged particles rather as the much tinier magnetic field of Jupiter does. Cosmos 1980-01-01T00:00:00Z It tipped slowly, still buoyed on the magnetic field of the east, west, and south anchors, but it had lost its balance, like a table with one leg cut away. Strange the Dreamer 2017-03-28T00:00:00Z “The magnetic field. Is there machinery inside the anchors or something?” Strange the Dreamer 2017-03-28T00:00:00Z It has a weaker magnetic field and radiation belt than Jupiter and a more spectacular set of circumplanetary rings. Cosmos 1980-01-01T00:00:00Z Lee, who carried his compass everywhere, had realized already that the earth’s magnetic field was as disturbed as everything else. The Subtle Knife 1997-01-01T00:00:00Z Gow was swept into Lawrence’s magnetic field and held there by the boss’s “sense of urgency, his willingness to try ideas rapidly and drop them when a better idea came along.” Big Science 2015-07-07T00:00:00Z “There is a magnetic field between the anchors and the citadel,” Mouzaive, the natural philosopher, was telling Kether, artist of siege engines, in the guildhall dining room. Strange the Dreamer 2017-03-28T00:00:00Z Paradise became a magnetic field for the possibility of violence. The Great Santini 1976-01-01T00:00:00Z Violent solar storms produce brilliant flares that disrupt radio communications on Earth; and immense arching plumes of hot gas, guided by the Sun’s magnetic field, the solar prominences, which dwarf the Earth. Cosmos 1980-01-01T00:00:00Z We know that Earth’s magnetic field changes in power from time to time: during the age of the dinosaurs, it was up to three times as strong as now. A Short History of Nearly Everything 2003-05-06T00:00:00Z And we were careful not to touch, so careful it felt like some repulsing magnetic field had settled between us. Anthem of a Reluctant Prophet 2007-04-30T00:00:00Z Mouzaive had invented an instrument he called a cryptochromometer that used a protein extracted from birds’ eyes to detect the presence of magnetic fields. Strange the Dreamer 2017-03-28T00:00:00Z As he knew, these were deflected somewhat by magnetic fields but, curiously, even more on their passage through solid matter—even through a thin film such as mica. Big Science 2015-07-07T00:00:00Z She returns her prosthetic arm to her stump, wincing at the momentary pinch of the magnetic fields that hold it tight. The Adoration of Jenna Fox 2008-04-29T00:00:00Z The Earth’s magnetic field has diminished by perhaps as much as 6 percent in the last century alone. A Short History of Nearly Everything 2003-05-06T00:00:00Z Particle physicists look at the subatomic realm with particle accelerators: they use magnetic fields or other means to get tiny particles moving very fast; when these particles collide with one another, they spit off fragments. Zero: The Biography of a Dangerous Idea 2000-02-07T00:00:00Z We know that to generate our magnetic field somewhere in the interior there must be a concentrated belt of metallic elements in a liquid state. A Short History of Nearly Everything 2003-05-06T00:00:00Z Electrons in the rotating magnetic field emit beamed radiation not only at radio frequencies but in visible light as well. Cosmos 1980-01-01T00:00:00Z Her brain was feeling the pull of the earth’s magnetic field, slight as it was. Frightful's Mountain 2001-05-21T00:00:00Z Everything was right—the angle of the sun’s rays, the wind, the temperature, and the magnetic field of the earth. Frightful's Mountain 2001-05-21T00:00:00Z The first principle was that charged particles moving in a perpendicular direction through a magnetic field follow a curved path. Big Science 2015-07-07T00:00:00Z The compass enabled sailors to perceive the earth’s magnetic field. The Invention of Science 2015-09-17T00:00:00Z “And these are particles — electrons, as well as a piece of its own magnetic field.” Viewing the Northern Lights: ‘It’s Almost Like Heavenly Visual Music’ 2019-02-11T05:00:00Z Charged particles are deflected by magnetic fields as they race across space, making it hard, or impossible, to retrace their route and locate their cosmic birthplace. The hunt for neutrinos in the Antarctic 2011-01-23T00:05:49Z The same disc can create a lower-intensity magnetic field that could pull a fork away. For ‘F9,’ Making Stunts That Stick 2021-05-28T04:00:00Z The Earth’s magnetic field draws the sun’s particles toward the poles. Every winter, the aurora borealis turns the night sky into a paint box of colors 2018-02-26T05:00:00Z Induction stoves use magnetic fields, which heat quickly and cool down fast. What we’re really fighting about when we fight about gas stoves 2023-01-14T05:00:00Z It is light yet very resistant, and is impervious to magnetic fields. Precise Future of Silicon Parts Still Being Debated 2012-11-23T13:35:46Z A group of Tongans in New Zealand, where the Frugal Traveler’s ethnic compass seems to have gone through a magnetic field. Frugal Traveler Blog: Notes From a New Zealand Newbie 2012-03-22T18:00:48Z Shechet emphasized the heat, placing the Lozano between one of Robert Morris’s drawing of magnetic fields and a Salvador Dalí drawing of Surrealist creatures coupling. Drawing, a Cure for the January Blahs 2022-01-20T05:00:00Z Fermilab, where Koeth did his PhD work, donated the 4,000 pounds of copper wire needed to wrap around the magnet and create the magnetic field for acceleration to be possible. U-Md. professor hooks students on this particle accelerator — by building one 2016-09-07T04:00:00Z The former are explosions of plasma from the sun that generate powerful magnetic fields. That’s All, Folks: A Serious Joke Book About Climate Change 2022-05-13T04:00:00Z The U-Md. accelerator remains in the early stages, with the vacuum chamber, ion source, magnetic field and radio frequency system still in the design phase. U-Md. professor hooks students on this particle accelerator — by building one 2016-09-07T04:00:00Z They were different in style from place to place, but formed a magnetic field of devotional energy that got pan-Asian traffic flowing. Art Review | 'Pilgrimage and Buddhist Art': On the Road With Seekers at the Asia Society 2010-03-18T23:04:00Z As Hooykaas has said: "We've always been drawn to space and time: the tides, the cycle of the seasons and natural elements like radio waves and magnetic fields." This week's new exhibitions 2010-12-18T00:08:35Z Communication between nerve cells in the brain is electrochemical, and where there is an electric current, there is a magnetic field at right angles to it. Mind Wars by Jonathan D Moreno – review 2012-06-01T21:55:07Z Geophysicists who study the magnetic field have long thought that the poles may be getting ready to switch again, and based on new data, it might happen earlier than anyone anticipated. What to expect from the Earth’s impending magnetic flip 2014-09-26T04:00:00Z Come Memorial Day, the Hamptons emit a sort of magnetic field that extends across the boroughs of New York City. Barn Pop-Up Opens in Sagaponack, New York 2015-05-26T04:00:00Z That motion, convection, is what produces the Earth’s magnetic field. Spoiler Alert: The 8,000-Mile Hole in Total Recall 2012-08-06T12:00:43Z A tiny magnetic field around each one powers and controls the cars. The World in Miniature: A Model Train (and Plane) Lover’s Paradise in Hamburg 2022-12-21T05:00:00Z The book suggests that a molecule in birds’ eyes might be the site of a quantum effect that permits them to “see” a magnetic field and thereby to navigate. Nature, the physicist 2014-11-20T05:00:00Z Birds also plug into the Earth’s magnetic field, perhaps at a cellular level. One of a gardener’s greatest joys: The return of birds during nesting season 2016-04-19T04:00:00Z The scientists put monarchs in a chamber with no outdoor light and showed that their flight patterns responded to changes in the magnetic field. Monarch butterflies navigate to Mexico with an internal magnetic compass, scientists say The aurora borealis is a dazzling natural phenomenon caused by Earth’s magnetic field interacting with electrically charged particles from the sun. 10 of the best virtual tours of the world's natural wonders 2020-04-06T04:00:00Z Léger’s multifaceted approach to Loden’s life and work is itself organized around a powerful magnetic field of her own ideas and passions—her recognition of “Wanda” as an essentially feminist masterwork. Barbara Loden: “A Woman Telling Her Own Story Through That of Another Woman” 2016-11-01T04:00:00Z Into this magnetic field are drawn the many stories of the town and its people: relevant, irrelevant, but never uninteresting. Nostalgia by Jonathan Buckley – review 2013-03-15T18:34:01Z Stragglers crush in tight, as if the instrument were some magnetic field or centrifugal force or — never mind, I’m hopeless with physics. The Tipsy Diaries: Getting a Kick From Piano Bars 2010-09-30T21:00:00Z At the Massachusetts General Hospital, Wedeen is working on a remarkable machine – the Connectom, which can generate far stronger magnetic fields than any other brain scanner and, therefore, resolve 10 times more detail. My life as a guinea pig for science 2013-07-27T23:05:16Z Its purpose is to study such things as the Earth's magnetic field, atmosphere and the effects of climate change. Halley VI research station, Antarctica – review 2013-02-10T08:00:03Z However, instead of using X-rays, the body is placed inside a strong magnetic field. Have you ever wondered about X-rays? Among other things, he checked "for any magnetic fields in Marie's brain" and claimed to find a "spike". Confessions of an Alien Abductee exploited its unfortunate subjects 2013-06-18T06:00:11Z “My village, for example, is a kind of amphitheater enclosed by mountains containing iron ore, which makes a magnetic field.” Robert Graves Found ‘Perfect Tranquillity’ in Majorca 2015-07-03T04:00:00Z They see ultraviolet light and hear sounds below the register detectable by the human ear; they sense the Earth's magnetic fields and changes in barometric pressure. 'Birdology': The life and times of birds and their devoted watchers 2010-05-05T22:07:00Z Interfere with the magnetic field and the brain signals are disrupted. Mind Wars by Jonathan D Moreno – review 2012-06-01T21:55:07Z The European Space Agency’s satellite array dubbed “Swarm” revealed that Earth’s magnetic field is weakening 10 times faster than previously thought, decreasing in strength about 5 percent a decade rather than 5 percent a century. What to expect from the Earth’s impending magnetic flip 2014-09-26T04:00:00Z Like an electric dynamo, this black hole spins and pumps energy out through cable-like magnetic field lines into the chaotic gas whipping around it. Gravity's Engines: The Other Side of Black Holes - review 2012-12-12T07:00:00Z Greed and corruption are themselves the magnetic fields that pull together would-be players — white, Latino and African-American. Review: ‘Superfly’ Adds Bling to an Old Tale 2018-06-12T04:00:00Z “We even collect magnetic field data, which is right now not predictive of anything, but one day …” He shrugs. Food for thought: will an era of hyper-personalized meals leave a sour taste? 2018-05-23T04:00:00Z As visitors step up on to the stage, these identical vertical lines of driving rain begin to be repelled, as if each body is giving off a kind of invisible magnetic field. Random International installs torrential rain in Barbican gallery 2012-10-03T13:05:23Z "A horse, a horse, my kingdom for a horse/Rattling on magnetic fields" are the record's opening lines. My favourite album: Vivadixiesubmarinetransmissionplot by Sparklehorse 2011-08-22T10:54:28Z Our magnetic field eventually draws the particles toward the North and South Poles, where they may enter the atmosphere. Viewing the Northern Lights: ‘It’s Almost Like Heavenly Visual Music’ 2019-02-11T05:00:00Z There is a magnetic field to bad news. Motherlode Blog: A Little Boy Drowned Yesterday 2011-08-23T20:22:28Z I picture the walls of Hallberg’s New York apartment so covered with pushpins that they distort the Earth’s magnetic field. ‘City on Fire’ review: A vibrant, kaleidoscopic vision of ’70s New York 2015-10-05T04:00:00Z It was always interesting that Plant remained on home territory, Welsh border country – only now, there seems to be a critical mass, a magnetic field drawing him closer to America than ever. The showman must go on 2011-01-30T00:03:02Z Earth’s rotation twists this moving iron liquid and generates a self-perpetuating magnetic field with north and south poles. What to expect from the Earth’s impending magnetic flip 2014-09-26T04:00:00Z Others prefer simpler gear for detecting disturbances to magnetic fields. Checking into a haunted hotel? Here’s how to make the most of it. 2021-10-28T04:00:00Z Detailed images are created when the magnetic field is interrupted with radio waves. Have you ever wondered about X-rays? Beyond incorporating materials that afford greater resistance to magnetic fields, the Aqua Terra movement boasts two distinctions: It is visible through a sapphire display back and it has been industrialized. Unfazed by Change, Swiss Watch Houses Embrace Technology 2013-04-24T15:32:37Z Ms. Wayne began designing tapestries in France while continuing to paint and to produce prints that incorporated imagery alluding to astrophysical space, the genetic code, stellar winds, magnetic fields, tsunamis and earthquakes. June Wayne, Painter and Printmaker, Dies at 93 2011-08-28T00:23:03Z Turn an enormous wheel that moves coils through a magnetic field, and arcing sparks of electricity are created. Museum Review: New York Transit Museum 2011-12-15T23:03:45Z But in New Zealand my ethnic compass seems to have gone through a magnetic field. Frugal Traveler Blog: Notes From a New Zealand Newbie 2012-03-22T18:00:48Z In the case of LFBOTs, rapid rotation or a strong magnetic field likely are key components of their launching mechanisms, Ho said. With unprecedented flares, stellar corpse shows signs of life 2023-11-15T05:00:00Z They knew that magnetic fields probably extracted energy from spinning black holes -- they just didn't know how. Galactic 'lightsabers': Answering longstanding questions about jets from black holes 2023-11-14T05:00:00Z "Instead, sporadic flare activity in nearby active regions seems to pump energetic electrons into large-scale magnetic field loops anchored at the sunspot, which then power the ECM radio emission above the region." Scientists uncover aurora-like radio emission above a sunspot 2023-11-13T05:00:00Z They are also thought, for example, to be sensor proteins in the perception of the Earth's magnetic field in birds. How marine bristle worms use a special protein to distinguish between sunlight and moonlight 2023-11-13T05:00:00Z And you incur a much larger dose if you get beyond the protective bubble of Earth’s ozone and magnetosphere, the magnetic field that stretches roughly 40,000 miles out at its most compressed point. The Bodily Indignities of the Space Life 2023-11-12T05:00:00Z This alignment would otherwise require a powerful magnetic field to activate, since cerium fluoride is naturally paramagnetic with randomly oriented spins even at zero temperature. Atomic dance gives rise to a magnet 2023-11-09T05:00:00Z The team gave Chael credit for the vital insight at the core of the new paper: that the direction in which the magnetic field lines are spiraling reveals the direction of the energy flow. Galactic 'lightsabers': Answering longstanding questions about jets from black holes 2023-11-14T05:00:00Z Its whirling magnetic fields sweep up matter and blast it outward in two beams like that of a lighthouse, creating a pulsar. See JWST’s Spectacular New View of the Crab Nebula 2023-11-10T05:00:00Z Additionally, observes Scientific American, superconductors repel magnetic fields, which could lead to more efficient magnetic levitation, or maglev, trains. Column: How a scientific 'breakthrough' fell apart amid allegations of plagiarism and fakery 2023-11-10T05:00:00Z After cosmic explosions at a distance of more than ten but less than 150 parsecs, according to theory, the solar wind and the magnetic field of the heliosphere prevent individual atoms from reaching the Earth. Exploding stars 2023-11-02T04:00:00Z "Each electron possesses a magnetic spin that acts like a tiny compass needle embedded in the material, reacting to the local magnetic field," said Rice materials scientist and co-author Boris Yakobson. Atomic dance gives rise to a magnet 2023-11-09T05:00:00Z The doughnut-shaped reactor, 12 meters in diameter, reached a milestone last week when it used magnetic fields generated by superconducting coils to contain a cloud of ionized gas, or plasma. News at a glance: Avian flu, a gene-therapy setback, and an opera about a fraudulent researcher 2023-11-01T04:00:00Z The latter is the eerie glow emitted by trapped electrons spiraling at nearly the speed of light around the pulsar’s intense magnetic field lines. See JWST’s Spectacular New View of the Crab Nebula 2023-11-10T05:00:00Z Others have suggested the extra kick could have come from primordial magnetic fields, interactions of neutrinos, or even changes in the electron’s mass. The universe’s puzzlingly fast expansion may defy explanation, cosmologists fret 2023-10-31T04:00:00Z In particular, Webb highlights what is known as synchrotron radiation: emission produced from charged particles, like electrons, moving around magnetic field lines at relativistic speeds. The Crab Nebula seen in new light by NASA's Webb 2023-10-30T04:00:00Z Japan’s JT-60SA uses magnetic fields from superconducting coils to contain a blazingly hot cloud of ionized gas, or plasma, within a doughnut-shaped vacuum vessel, in hope of coaxing hydrogen nuclei to fuse and release energy. First plasma fired up at world’s largest fusion reactor 2023-10-31T04:00:00Z When the particles reach the magnetic field surrounding our planet, known as the magnetosphere, they interact with it. The importance of the Earth's atmosphere in creating the large storms that affect satellite communications 2023-10-30T04:00:00Z By harnessing the power of an intense external magnetic field and using an iron tip in the scanning tunneling microscope, the Würzburg physicists managed to determine the magnetic orientation of the cobalt's spin. New quantum effect demonstrated for the first time: Spinaron, a rugby in a ball pit 2023-10-26T04:00:00Z That supercurrent acts as a mirror for the spin wave: the superconducting electrode reflects the magnetic field back to the spin wave. Controlling waves in magnets with superconductors for the first time 2023-10-26T04:00:00Z The pulsar's strong magnetic field accelerates particles to extremely high speeds and causes them to emit radiation as they wind around magnetic field lines. The Crab Nebula seen in new light by NASA's Webb 2023-10-30T04:00:00Z The discovery could shed light on the mysteries behind the magnetic fields of the planets of our solar system, and even on whether distant worlds might support life. Uranus aurora discovery offers clues to habitable icy worlds 2023-10-26T04:00:00Z The interactions between the charged particles and magnetic fields lead to space weather, the conditions in space that can affect the Earth and technological systems such as satellites. The importance of the Earth's atmosphere in creating the large storms that affect satellite communications 2023-10-30T04:00:00Z By reading the information stored in the rock’s ancient magnetic field, Van de Lagemaat was able to deduce what latitude the rock formed at. How does an ocean-sized tectonic plate go missing for 20 million years? 2023-10-26T04:00:00Z The researchers imaged the spin waves by measuring their magnetic field with a unique sensor, something that was essential to the experiment. Controlling waves in magnets with superconductors for the first time 2023-10-26T04:00:00Z The curvy wisps are closely grouped together, outlining the structure of the pulsar's magnetic field, which sculpts and shapes the nebula. The Crab Nebula seen in new light by NASA's Webb 2023-10-30T04:00:00Z Not only does this help us better understand the magnetic fields of the outer planets of our own solar system, but it may also help in identifying other planets that are suitable of supporting life. Uranus aurora discovery offers clues to habitable icy worlds 2023-10-26T04:00:00Z That coherence is often controlled with a magnetic field. Using sound to test devices, control qubits 2023-10-25T04:00:00Z The product of basaltic lava flows dating back more than 135 million years, basalt’s formation process is shaped by the natural magnetic fields present in its location at the time. How does an ocean-sized tectonic plate go missing for 20 million years? 2023-10-26T04:00:00Z "Their existence can help tell us whether magnetic fields can be generated and maintained, how planets cool over time, and also how the dynamics of their interiors change over time." Scientists discover molten layer covering Martian core 2023-10-25T04:00:00Z As proof of concept of how the robot would maneuver through the body, the tiny robot was moved through a maze by researchers controlling its movement using a magnetic field. Plant-based materials give 'life' to tiny soft robots 2023-10-23T04:00:00Z By analysing Uranus's aurora which directly connects to both the planet's magnetic field and atmosphere, we can make predictions about the atmospheres and magnetic fields of these worlds and hence their suitability for life. Uranus aurora discovery offers clues to habitable icy worlds 2023-10-26T04:00:00Z But with their technique, Hu and her team demonstrated that they could control spin by mechanically deforming the material with acoustic waves, obtaining a quality of control similar to other approaches using alternating magnetic fields. Using sound to test devices, control qubits 2023-10-25T04:00:00Z By reading the information stored in the rock’s ancient magnetic field, Van de Lagemaat was able to deduce what latitude the rock formed at. How does an ocean-sized tectonic plate go missing for 20 million years? 2023-10-26T04:00:00Z When combined with a dynamic magnetic field generated by an external device, the mechanical stimulation of the gel encourages dermal fibroblasts to become more active. NUS scientists develop innovative magnetic gel that heals diabetic wounds three times faster 2023-10-19T04:00:00Z The quantum state of the nitrogen-vacancy centers interacts with magnetic fields. A miniature magnetic resonance imager made of diamond 2023-10-19T04:00:00Z The ice giants Uranus and Neptune are unusual planets in our solar system as their magnetic fields are misaligned with the axes in which they spin. Uranus aurora discovery offers clues to habitable icy worlds 2023-10-26T04:00:00Z Less obvious to Earthlings: this solar activity has also been eating away at the sun’s surprisingly fluid magnetic field, and our home star’s poles have nearly lost their charge as a result. The Sun’s Magnetic Poles Are Vanishing 2023-10-20T04:00:00Z “It almost gives you the impression the sun is building up this magnetic field below the surface that it just needs to get out, and it hits some breaking point,” he says. Traces of Oldest and Largest Solar Storm Found in Buried French Forest 2023-10-19T04:00:00Z A magnet is a common example of a ferroic material: Its electrons can coordinate to spin in the same direction without an external magnetic field. From a five-layer graphene sandwich, a rare electronic state emerges 2023-10-18T04:00:00Z The MRI device creates a very strong magnetic field which interacts with the tiny magnetic fields of the hydrogen nuclei in the body. A miniature magnetic resonance imager made of diamond 2023-10-19T04:00:00Z Aurorae are caused by highly energetic charged particles, which are funnelled down and collide with a planet's atmosphere via the planet's magnetic field lines. Uranus aurora discovery offers clues to habitable icy worlds 2023-10-26T04:00:00Z As the months progress, the magnetic field will reverse and then gradually strengthen as solar activity fades, scientists say. The Sun’s Magnetic Poles Are Vanishing 2023-10-20T04:00:00Z The chosen model was tokamak, which uses magnetic fields to confine the plasma - a hot, ionised gas - inside a vessel. UK's nuclear fusion site ends experiments after 40 years 2023-10-13T04:00:00Z The researchers measured electrons' response to an electric field and a magnetic field, and found that indeed, two ferroic orders, or sets of coordinated behaviors, emerged. From a five-layer graphene sandwich, a rare electronic state emerges 2023-10-18T04:00:00Z On Earth, the planet’s iron core is responsible for the magnetic field that shields our atmosphere and enables life. NASA spacecraft launched to mysterious and rare metal asteroid in first mission of its kind 2023-10-13T04:00:00Z The sun has a fiendishly complex magnetic field created by the motions of ionized gas called plasma in its interior. How to Watch the Northern Lights and Other Awesome Auroras 2023-10-13T04:00:00Z As the sun rotates, the seemingly orderly magnetic field warps and strengthens. The Sun’s Magnetic Poles Are Vanishing 2023-10-20T04:00:00Z Le also showed how this method can be used in various applications, including quantum metrology with single and multiple magnetic fields and Hamiltonian tomography applied to intricate many-body systems. Exploring parameter shift for quantum fisher information 2023-10-11T04:00:00Z While various other mechanisms for generating a magnetic field have been proposed, the dynamo theory is the widely accepted explanation of this phenomenon on Earth. Removal of magnetic spacecraft contamination within extraterrestrial samples easily carried out, researchers say 2023-10-11T04:00:00Z Gauri Bhave, a former researcher in the Robinson lab who now works in technology transfer for Baylor College of Medicine, explained that the magnetorestrictive element vibrates with the application of a magnetic field. Magnetoelectric material can reconnect severed nerves 2023-10-10T04:00:00Z When such outbursts hit Earth, the two magnetic fields interact in very complicated and, honestly, not terribly well-understood ways. How to Watch the Northern Lights and Other Awesome Auroras 2023-10-13T04:00:00Z The magnetic field also rises toward the sun’s surface, typically near the sun’s equator, where it manifests as sunspots. The Sun’s Magnetic Poles Are Vanishing 2023-10-20T04:00:00Z Birds rely on the Earth's magnetic field to navigate, yet until recently it was unclear whether space weather could make it more difficult for these same birds to fly. Funky space weather causes navigation problems in birds, study finds 2023-10-10T04:00:00Z For asteroids, researchers want to understand how magnetic fields may have helped material come together in the early solar nebula and eventually build up into larger planets. Removal of magnetic spacecraft contamination within extraterrestrial samples easily carried out, researchers say 2023-10-11T04:00:00Z "For all other magnetoelectric materials, the relationship between the electric field and the magnetic field is linear, and what we needed was a material where that relationship was nonlinear," Robinson said. Magnetoelectric material can reconnect severed nerves 2023-10-10T04:00:00Z Outside of colors, the forms an aurora can take arise from exactly how a solar outburst reshapes a portion of Earth’s magnetic field. How to Watch the Northern Lights and Other Awesome Auroras 2023-10-13T04:00:00Z And as material moves around the sun, these leftovers typically migrate toward the pole of that hemisphere, which usually cancels out a little of the existing magnetic field there. The Sun’s Magnetic Poles Are Vanishing 2023-10-20T04:00:00Z And some of this weather can affect the magnetic field in ways that are not perceptible to humans. Solar Storms Can Hinder Bird Migration 2023-10-10T04:00:00Z Based on analyses of lunar samples, its now-deceased magnetic field may have been active for more than 1.5 billion years -- give or take a billion years. Removal of magnetic spacecraft contamination within extraterrestrial samples easily carried out, researchers say 2023-10-11T04:00:00Z Probes on the craft will collect data on its magnetic field, chemistry and gravity, all of which provide clues to its origins, interior structure and exterior composition. Welcome to NASA's hot asteroid autumn 2023-10-10T04:00:00Z Because Earth’s magnetic field is dipolar like a bar magnet and aligned roughly perpendicular to our world’s rotation, geomagnetic field lines extend most prominently from the vicinity of our planet’s North and South poles. How to Watch the Northern Lights and Other Awesome Auroras 2023-10-13T04:00:00Z That said, the process can be bumpy, depending on the sun’s activity and on aspects of the magnetic field that scientists aren’t yet able to predict. The Sun’s Magnetic Poles Are Vanishing 2023-10-20T04:00:00Z Nocturnally migrating birds are less likely to fly—and in some cases, more likely to drift where the winds take them—during space weather events that disturb the magnetic field that surrounds our planet. Solar Storms Can Hinder Bird Migration 2023-10-10T04:00:00Z Scientists believe it was generated like the Earth's via a dynamo process, whereby the spinning and churning of conductive liquid metal within a rocky planet's core generates a magnetic field. Removal of magnetic spacecraft contamination within extraterrestrial samples easily carried out, researchers say 2023-10-11T04:00:00Z It's well-known that birds and other animals rely on Earth's magnetic field for long-distance navigation during seasonal migrations. Space weather disrupts nocturnal bird migration, study finds 2023-10-09T04:00:00Z To answer that question, scientists first had to ask themselves where in the universe the strongest known electric and magnetic fields occur. Pulsars may make dark matter glow 2023-10-06T04:00:00Z The poles of the sun’s magnetic field are fading away. The Sun’s Magnetic Poles Are Vanishing 2023-10-20T04:00:00Z “But we do know that birds use the magnetic field, and the magnetic fields do get disrupted, so there ought to be a relationship.” Solar Storms Can Hinder Bird Migration 2023-10-10T04:00:00Z However, researchers have grappled with how such a small planetary body could have sustained a long-lived magnetic field. Removal of magnetic spacecraft contamination within extraterrestrial samples easily carried out, researchers say 2023-10-11T04:00:00Z But how do periodic disruptions of the planet's magnetic field, caused by solar flares and other energetic outbursts, affect the reliability of those biological navigation systems? Space weather disrupts nocturnal bird migration, study finds 2023-10-09T04:00:00Z "Using the new quantum ruler to study how the circular orbits vary with magnetic field, we hope to reveal the subtle magnetic properties of these moiré quantum materials," Stroscio said. Twisted science: New quantum ruler to explore exotic matter 2023-10-05T04:00:00Z At this point, the star’s magnetic field was arranged as a relatively tidy dipole, where one pole is positively charged, and the other pole negatively charged. The Sun’s Magnetic Poles Are Vanishing 2023-10-20T04:00:00Z Earth’s magnetic field swathes our planet in a protective bubble that blunts the worst of the sun’s outbursts, but strong events can still affect human infrastructure such as GPS satellites and power grids. Solar Storms Can Hinder Bird Migration 2023-10-10T04:00:00Z The explosions leave behind a tiny, dead star with a diameter of just some 20 kilometres, rotating extremely fast and endowed with an enormous magnetic field. Scientists discover the highest energy gamma-rays ever from a pulsar 2023-10-05T04:00:00Z Doppler weather radar stations and ground-based magnetometers -- devices that measure the intensity of local magnetic fields -- to test for a possible link between geomagnetic disturbances and disruptions to nocturnal bird migration. Space weather disrupts nocturnal bird migration, study finds 2023-10-09T04:00:00Z The present standard is based on the discrete resistance values that a material takes on when a strong magnetic field is applied to the electrons in a two-dimensional layer. Twisted science: New quantum ruler to explore exotic matter 2023-10-05T04:00:00Z But unlike Earth’s magnetic field or that of a bar magnet, the sun’s magnetism is patchy and highly fluid, even during its dipole stage. The Sun’s Magnetic Poles Are Vanishing 2023-10-20T04:00:00Z Both she and others noted, however, that the study only identified a potential association between magnetic field disturbances and bird behavior. Solar Storms Can Hinder Bird Migration 2023-10-10T04:00:00Z The direction of supercurrent can be controlled either with a magnetic field or a gate electric field. Examining the superconducting diode effect 2023-10-02T04:00:00Z Earth's magnetic field is regularly impacted by solar outbursts that can trigger colorful auroras and that sometimes disrupt satellite communications, human navigation systems and power grids. Space weather disrupts nocturnal bird migration, study finds 2023-10-09T04:00:00Z But because a hefty magnetic field is needed, the calibrations can only be conducted at a metrology facility such as NIST. Twisted science: New quantum ruler to explore exotic matter 2023-10-05T04:00:00Z But forces such as friction and magnetic fields work to keep it together. Supermassive Black Hole Feeding Frenzies May Explain Blinking Quasars 2023-09-28T04:00:00Z The scientists reduced the strength of the trap's top and bottom magnetic fields until the antihydrogen atoms could escape and the relatively weak influence of gravity became apparent. Down goes antimatter! Gravity's effect on matter's elusive twin is revealed 2023-09-27T04:00:00Z What’s more, even a tiny stray magnetic field could send a disproportionate number out the top of the trap, creating a spurious antigravity signal. Antimatter falls down, just like ordinary matter 2023-09-27T04:00:00Z But little is known about how those disturbances affect animals that depend on Earth's magnetic field for migratory orientation and navigation. Space weather disrupts nocturnal bird migration, study finds 2023-10-09T04:00:00Z After reaching ultralow temperatures, they examined how the energy levels of electrons in the layers of graphene changed when they varied the strength of a strong external magnetic field. Twisted science: New quantum ruler to explore exotic matter 2023-10-05T04:00:00Z So a quantum quench is when you have a quantum system that you prepare in a certain state, and then you change a magnetic field or something and watch what happens. Bizarre Quantum Theory Explains Why Your Coffee Takes So Long to Drip through a Narrow Filter 2023-09-25T04:00:00Z The researchers repeated the experiment more than a dozen times, varying the magnetic field strength at the top and bottom of the trap to rule out possible errors. Down goes antimatter! Gravity's effect on matter's elusive twin is revealed 2023-09-27T04:00:00Z Some researchers believe this disparity emerged on Earth through molecules’ exposure to magnetic fields, but polarized ultraviolet light striking asteroids during their long journeys in space could also have favored the left-handed forms. NASA delivers bounty of asteroid samples to Earth 2023-09-24T04:00:00Z The Earth has a protective shield called a magnetosphere, which is the area of space around a planet that is controlled by its magnetic field. Spending time in space can harm the human body 2023-09-21T04:00:00Z When the researchers applied a voltage to the graphene bilayers in the magnetic field, the microscope recorded the tiny current from the electrons that "tunneled" out from the material to the microscope probe tip. Twisted science: New quantum ruler to explore exotic matter 2023-10-05T04:00:00Z YIG is an insulator but allows for a magnetic field effect when a thin layer of platinum is glued to it. Electrons take flight at the nanoscale 2023-09-19T04:00:00Z It flew through the corona for about five hours, recording information on the solar winds and magnetic fields around it. NASA’s Parker Solar Probe “Touches” the Sun 2021-12-16T05:00:00Z Periods of strong activity on the Sun send out energy that can interfere with the Earth’s magnetic field, as well as electrical systems on Earth. News Roundup: Ethiopia Truce, Israel Elections, & a Smiling Sun 2022-11-04T04:00:00Z Others use a magnetic field to contain the reaction. Fusion Progress: Scientists Gain Energy for the First Time 2022-12-14T05:00:00Z In a magnetic field, electrons move in circular paths. Twisted science: New quantum ruler to explore exotic matter 2023-10-05T04:00:00Z "The magnetic field effect shows up only at the interface of this garnet crystal and platinum," Gabor said. Electrons take flight at the nanoscale 2023-09-19T04:00:00Z One is the Earth’s magnetic field, which is created by the movement of the liquid in the outer core. Is the Earth’s Inner Core Spinning More Slowly? 2023-02-16T05:00:00Z The fMRI machine uses strong magnetic fields and radio waves to create pictures showing which parts of the brain are active. Scientists Train AI to Read Human Thoughts 2023-05-11T04:00:00Z Solar filaments are arcs of plasma in the Sun's atmosphere given shape by magnetic fields. Astronomy Photographer of the Year: Huge plasma arc wins 2023-09-14T04:00:00Z In order to maintain that fixed product, if the magnetic field is halved, then the area enclosed by an orbiting electron must double. Twisted science: New quantum ruler to explore exotic matter 2023-10-05T04:00:00Z "If you can control the magnetic field, you control the current." Electrons take flight at the nanoscale 2023-09-19T04:00:00Z If a planet does not have a strong magnetic field to protect it, a CME can strip away its atmosphere until it is a barren, uninhabitable rock. Nearby Worlds May Tell Us How Life Might Look in Our Galaxy 2023-09-14T04:00:00Z The Milky Way and nearby galaxies have magnetic fields that help clouds of gas collapse into newborn stars. News at a glance: Costly invasive species, cancer in younger adults, and fumigating Paris 2023-09-06T04:00:00Z Other brain stimulation techniques have been developed as well: Transcranial magnetic stimulation, for instance, "uses magnetic fields to stimulate nerve cells in the brain," according to the Mayo Clinic, and is less invasive than ECT. The persistent mysteries of electroconvulsive therapy 2023-09-04T04:00:00Z The area enclosed by the circular orbit of electrons multiplied by the applied magnetic field no longer equaled a fixed value. Twisted science: New quantum ruler to explore exotic matter 2023-10-05T04:00:00Z After 100 days, they thawed the organs with an alternating magnetic field, which caused the nanoparticles to oscillate and evenly warm the tissue. After ‘Absurdly Long’ 100-Day Freeze, Rat Kidneys Were Successfully Transplanted 2023-09-01T04:00:00Z They are relatively small, measuring about 20 kilometers across; they have magnetic fields stronger than anything on Earth; and they rotate on their axis hundreds of times per second. Scientists just solved the riddle of a dead star that burps ultra-hot "cosmic cannonballs" of matter 2023-08-30T04:00:00Z Its light is slightly polarized, evidence that a magnetic field aligned dust grains in the galaxy, which then emitted photons that vibrate in a favored direction. News at a glance: Costly invasive species, cancer in younger adults, and fumigating Paris 2023-09-06T04:00:00Z The jets emanate from structures on the corona called coronal holes where the sun's magnetic field stretches into space rather than back into the star. Sun-observing spacecraft sheds light on the solar wind's origin 2023-08-24T04:00:00Z As it turns out, Earth’s rotation deflects the flow of fluids in a way that’s analogous to how magnetic fields twist the paths of electrons moving through quantum materials called topological insulators. Quantum Physics Can Explain Earth’s Weather 2023-08-24T04:00:00Z New data of the star when observed from a ‘magnetic point-of-view’ showed it has a powerful magnetic field, about 43,000 gauss — the most powerful ever found in a massive star. Magnetars Origin Story 2023-08-23T04:00:00Z "As a result, the inflowing matter is drawn into the pulsar magnetic field and accelerated, producing a compact jet of plasma that streams out along the direction of the pulsar magnetic field lines." Scientists just solved the riddle of a dead star that burps ultra-hot "cosmic cannonballs" of matter 2023-08-30T04:00:00Z Additional research may illuminate the role played by distant magnetic fields in the furious pace of star creation in the young universe. News at a glance: Costly invasive species, cancer in younger adults, and fumigating Paris 2023-09-06T04:00:00Z That, and the rest of our knowledge about our world's interior, was learned indirectly – either by studying Earth's magnetic field or the way earthquake waves bounce off different layers below the Earth's surface. NASA’s Psyche mission to a metal world may reveal the mysteries of Earth’s interior 2023-08-23T04:00:00Z Marston suspected there was a connection between geophysical waves and electrons moving through a magnetic field, but he didn’t know where to find it — until his colleague Antoine Venaille suggested looking at the equator. Quantum Physics Can Explain Earth’s Weather 2023-08-24T04:00:00Z Its core will shrink and start trapping all the star's powerful magnetic field lines, creating a highly magnetic neutron star —a magnetar — with a magnetic field of 100 trillion gauss. Magnetars Origin Story 2023-08-23T04:00:00Z Its mass is twice that of our sun, but its magnetic field is an astounding 43,000 gauss, a unit for measuring magnetic induction. Magnetars and “zombie” stars: New type of ultrahigh magnetic star discovered 2023-08-18T04:00:00Z So scientists have devised a clever solution: they exploit plasma’s magnetic properties to confine it within a strong magnetic field. Math’s ‘Hairy Ball Theorem’ Has Surprising Implications 2023-08-18T04:00:00Z And they boast mind-bogglingly powerful magnetic fields that are trillions of times stronger than the one that encompasses our planet. This Bizarre Star Could Become One of the Strongest Magnets in the Universe 2023-08-17T04:00:00Z He already knew that an electron attempting to traverse a magnetic field is deflected from its direction of motion and ends up moving in circles. Quantum Physics Can Explain Earth’s Weather 2023-08-24T04:00:00Z Magnetars are a type of neutron star that holds the ‘universal’ record of the object with the strongest magnetic fields in the cosmos. Magnetars Origin Story 2023-08-23T04:00:00Z "Stellar evolution calculations indicate that this component will explode as a supernova," the team wrote, "and that its magnetic field is strong enough for the supernova to leave a magnetar remnant." Magnetars and “zombie” stars: New type of ultrahigh magnetic star discovered 2023-08-18T04:00:00Z A magnetic field around any of these structures would form a continuous tangent vector field, and at this point we know what befalls such hairy constructions. Math’s ‘Hairy Ball Theorem’ Has Surprising Implications 2023-08-18T04:00:00Z A magnetar’s magnetic field is so strong, in fact, that it can crack open the star’s surface to release powerful bursts of energy that may be visible across billions of light-years. This Bizarre Star Could Become One of the Strongest Magnets in the Universe 2023-08-17T04:00:00Z When he tweaked the variables in the fluid flow equations, he found that those equations were equivalent to Maxwell-Chern-Simons theory, which describes how electrons move in a magnetic field. Quantum Physics Can Explain Earth’s Weather 2023-08-24T04:00:00Z “The magnitudes of the induced electric field and magnetic field are … well within the detection range of some top-notch sensors,” the study said. Navy carrier strike group deployed near Taiwan 2023-08-16T04:00:00Z They then altered the surrounding magnetic field to kick off the chemical bonding of the atoms. ‘Quantum Superchemistry’ Observed for the First Time Ever 2023-08-15T04:00:00Z A zero in the magnetic field means a leak in the container, which spells disaster for the whole reactor. Math’s ‘Hairy Ball Theorem’ Has Surprising Implications 2023-08-18T04:00:00Z Cole Miller of the University of Maryland says that while the measurement of the Wolf-Rayet star’s magnetic field “seems solid,” he isn’t completely certain the star will become a neutron star. This Bizarre Star Could Become One of the Strongest Magnets in the Universe 2023-08-17T04:00:00Z In this new view of Earth’s flow, a wave’s height corresponds to a magnetic field and its speed corresponds to an electric field. Quantum Physics Can Explain Earth’s Weather 2023-08-24T04:00:00Z Some superconductors lose their capacity to freely transport electricity at high currents or in the presence of magnetic fields, yet both abilities are necessary for an electrical component to be practical. The Superconductor Sensation Has Fizzled, and That's Fine 2023-08-14T04:00:00Z Nearly a century ago the theorist Paul Dirac calculated a value, called g, for how much a charged particle should be affected by a magnetic field. Muon Mystery Deepens with Latest Measurements 2023-08-10T04:00:00Z The levitation, the scientists said, demonstrated the Meissner effect, which ensures zero magnetic field inside a superconductor. LK-99 Is the Superconductor of the Summer 2023-08-03T04:00:00Z “The magnetic field can’t just disappear. It has to be amplified when you collapse to the size of a neutron star.” This Bizarre Star Could Become One of the Strongest Magnets in the Universe 2023-08-17T04:00:00Z Voyager 2 and its twin Voyager 1 are the only spacecraft ever to operate outside the heliosphere, the protective bubble of particles and magnetic fields generated by the Sun. Voyager 2: Nasa loses contact with record-breaking probe after sending wrong command 2023-08-01T04:00:00Z One such test is for the Meissner effect: because a superconductor expels magnetic fields, it repels other magnets, producing an iconic levitating effect. Viral New Superconductivity Claims Leave Many Scientists Skeptical 2023-07-27T04:00:00Z The researchers suspect that its magnetic field may be responsible for this asymmetry. Introducing Janus, the exotic 'two-faced' white dwarf star 2023-07-21T04:00:00Z Solar flares happen when the powerful magnetic fields in and around the sun reconnect. Russian scientists warn of powerful solar flare activity on Monday 2023-07-17T04:00:00Z Astronomers have not yet managed to measure the magnetic fields of many neutron stars, but theoretical calculations suggest somewhere between 10 and 40 percent of them may be magnetars. This Bizarre Star Could Become One of the Strongest Magnets in the Universe 2023-08-17T04:00:00Z It works by generating a magnetic field at a right angle to an electric current. The US military revives an idea for stealthy sea power 2023-07-13T04:00:00Z Northern Lights occur when a magnetic solar wind slams into the Earth’s magnetic field and causes atoms in the upper atmosphere to glow. Solar storm on Thursday expected to make Northern Lights visible in 17 states, including WA 2023-07-08T04:00:00Z If the magnetic field is stronger on one side than the other, as is often the case with celestial objects, one side could have less mixing of elements, becoming hydrogen heavy or helium heavy. Introducing Janus, the exotic 'two-faced' white dwarf star 2023-07-21T04:00:00Z They can affect Earth's magnetic field with the potential to damage satellites and communications equipment, according to NASA. Russian scientists warn of powerful solar flare activity on Monday 2023-07-17T04:00:00Z Why some neutron stars develop ultrastrong magnetic fields and others do not is an open question. This Bizarre Star Could Become One of the Strongest Magnets in the Universe 2023-08-17T04:00:00Z Some types of magnetic field have the same corrosive effect. The US military revives an idea for stealthy sea power 2023-07-13T04:00:00Z "It all comes down to the sun's magnetic field," Alex James, a solar physicist at University College London in the U.K., told Live Science. Solar Maximum Could Hit Us Harder And Sooner Than We Thought 2023-07-04T04:00:00Z "Many white dwarfs are expected to go through this transition, and we might have caught one in the act because of its magnetic field configuration," Caiazzo said. Introducing Janus, the exotic 'two-faced' white dwarf star 2023-07-21T04:00:00Z When solar radiation and cosmic rays threaten to penetrate Earth’s surface, a vast magnetic field generated within Earth’s outer core safeguards the planet by deflecting harmful space energy. Earth's shifting magnetic poles don't cause climate change—the conspiracy theory debunked 2023-07-03T04:00:00Z “We have never detected magnetic fields in these types of stars,” Shenar says. This Bizarre Star Could Become One of the Strongest Magnets in the Universe 2023-08-17T04:00:00Z Others were observed with magnetoencephalography, which reads magnetic fields in the brain. 2 Leading Theories of Consciousness Square Off 2023-07-01T04:00:00Z These fiery ribbons can then snap as the sun's magnetic field realigns, releasing bright flashes of light and radiation, known as solar flares. Solar Maximum Could Hit Us Harder And Sooner Than We Thought 2023-07-04T04:00:00Z The report did not include measurements to determine whether there were zero magnetic fields inside. New Study Bolsters Room-Temperature Superconductor Claim 2023-06-23T04:00:00Z Scientists know that the internal forces that generate Earth’s magnetic field can change and that the strength of the field oscillates over time. Earth's shifting magnetic poles don't cause climate change—the conspiracy theory debunked 2023-07-03T04:00:00Z “It turned out to have an extremely powerful magnetic field, and it is a prime candidate for becoming a magnetar.” This Bizarre Star Could Become One of the Strongest Magnets in the Universe 2023-08-17T04:00:00Z Editor’s Note: Yusef-Zadeh explains that these long, vertical filaments turned out to be made of synchrotron radiation, which is produced by particles moving at nearly the speed of light through a magnetic field. Strange Giant Filaments Reveal a Mystery at the Milky Way’s Heart 2023-06-22T04:00:00Z A few years after the maximum, the sun's magnetic field "snaps" and then completely flips. Solar Maximum Could Hit Us Harder And Sooner Than We Thought 2023-07-04T04:00:00Z With larger objects, such as rat kidneys, they have made progress with a powerful magnetic field coupled with iron nanoparticles. How to deep freeze an entire organ—and bring it back to life 2023-06-21T04:00:00Z Claims that Earth’s magnetic field is responsible for climate change are rampant online, but scientists say the theory has no merit. Earth's shifting magnetic poles don't cause climate change—the conspiracy theory debunked 2023-07-03T04:00:00Z The researchers then modeled the Wolf-Rayet star’s history to better understand how its remarkable magnetic field might have formed and found that the star was likely the result of two helium-rich stars merging together. This Bizarre Star Could Become One of the Strongest Magnets in the Universe 2023-08-17T04:00:00Z In the second compartment, we use magnetic fields and laser light to slow the vapor down. Physicists Make Matter out of Light to Find Quantum Singularities 2023-06-18T04:00:00Z "Sunspots appear when strong magnetic fields poke through the surface of the sun," James said. Solar Maximum Could Hit Us Harder And Sooner Than We Thought 2023-07-04T04:00:00Z When he pressed a button, the box generated a magnetic field around the cup that flipped the positive and negative poles 360,000 times every second. How to deep freeze an entire organ—and bring it back to life 2023-06-21T04:00:00Z In a new numerical model, researchers found that a small, random magnetic field inside the radiative layer of a star could be amplified by the plasma’s flow. Scientists Solve Star Spin Mystery 2023-06-16T04:00:00Z That is a magnetic field so strong that it can distort the orbits of electrons in atoms; hydrogen, for example, is squashed some 200 times narrower in a magnetar’s field. This Bizarre Star Could Become One of the Strongest Magnets in the Universe 2023-08-17T04:00:00Z The sluggish vapor then flows into another compartment: a magneto-optical trap, where it is captured by an arrangement of magnetic fields and laser light. Physicists Make Matter out of Light to Find Quantum Singularities 2023-06-18T04:00:00Z "By looking at those sunspots we can get an idea of how strong and complex the sun's magnetic field is at that moment." Solar Maximum Could Hit Us Harder And Sooner Than We Thought 2023-07-04T04:00:00Z But previous reports show that magnetite subjected only to Earth’s natural magnetic field can still cause an initial, though smaller, bias toward one form of a chiral molecule. ‘Breakthrough’ could explain why life molecules are left- or right-handed 2023-06-13T04:00:00Z In a new study, researchers modeled how a magnetic field could grow in the internal layers of a star, dragging its rotation down. Scientists Solve Star Spin Mystery 2023-06-16T04:00:00Z “The magnetic field can create so much stress that it’ll crack the crust of the star,” says Jason Hessels of the University of Amsterdam, “causing a massive star quake that releases a lot of energy.” This Bizarre Star Could Become One of the Strongest Magnets in the Universe 2023-08-17T04:00:00Z But one measurement didn’t fit expectations: the spiral magnetic field didn’t straighten out like it was supposed to if the spacecraft had indeed crossed over. Scientists Make Best-Yet Map of Solar System’s Interstellar Boundaries 2023-06-08T04:00:00Z This localized field prevents the sun's main magnetic field from growing stronger and getting tangled up, meaning the localized field essentially acts like a handbrake preventing solar activity from increasing. Solar Maximum Could Hit Us Harder And Sooner Than We Thought 2023-07-04T04:00:00Z Pasteur, who saw hints of this selectivity, or “homochirality,” thought magnetic fields might somehow explain it, but its origin has remained one of biology’s great mysteries. ‘Breakthrough’ could explain why life molecules are left- or right-handed 2023-06-13T04:00:00Z Once strong enough, this magnetic field spurs turbulence in the star’s plasma, which in turn strengthens the magnetic field, which boosts the turbulence, and so on. Scientists Solve Star Spin Mystery 2023-06-16T04:00:00Z The convection of charged particles generates shifting magnetic fields that stretch until they snap and reconnect, releasing energy that contributes to the heating of the corona. How Solar Wind Flows From the Sun Like Water From a Shower Head 2023-06-07T04:00:00Z Interstellar clouds can also stretch and twist surrounding magnetic fields as they move. Scientists Make Best-Yet Map of Solar System’s Interstellar Boundaries 2023-06-08T04:00:00Z For example, the terminator at the start of Solar Cycle 24 happened later than expected, which allowed for less magnetic field growth during Solar Cycle 24, resulting in a weaker solar maximum. Solar Maximum Could Hit Us Harder And Sooner Than We Thought 2023-07-04T04:00:00Z They applied a strong external magnetic field, aligning electron spins in the magnetite and strengthening its magnetism. ‘Breakthrough’ could explain why life molecules are left- or right-handed 2023-06-13T04:00:00Z The answer long favored for reactor design is magnetic confinement: holding the electrically charged plasma in a “magnetic bottle” formed by strong magnetic fields so it never touches the walls of the fusion chamber. What Is the Future of Fusion Energy? 2023-06-05T04:00:00Z Imagine a simple bar magnet, which generates a magnetic field similar in shape to the one that surrounds Earth. How Solar Wind Flows From the Sun Like Water From a Shower Head 2023-06-07T04:00:00Z “The general shape of the heliosphere is governed by its motion through the LIC, but its exact shape also depends on the ambient magnetic fields,” Ferrière says. Scientists Make Best-Yet Map of Solar System’s Interstellar Boundaries 2023-06-08T04:00:00Z At solar minimum, the sun's magnetic field is strong and organized, with two clear poles like a normal dipole magnet, James said. Solar Maximum Could Hit Us Harder And Sooner Than We Thought 2023-07-04T04:00:00Z An external device uses electromagnetic coils to create a magnetic field, which moves the second magnet. Tiny sensor could guide needles through the body, monitor health from afar 2023-06-01T04:00:00Z Such magnets were hailed as a significant step for magnetic-confinement fusion because the power density in the plasma increases rapidly as the strength of the magnetic field rises. What Is the Future of Fusion Energy? 2023-06-05T04:00:00Z At the poles, the magnetic fields go straight up and down; those are the coronal holes. How Solar Wind Flows From the Sun Like Water From a Shower Head 2023-06-07T04:00:00Z This ionized gas flows outward along magnetic field lines emerging from our star, spooling out in radial spirals tied to the sun’s rotation. Scientists Make Best-Yet Map of Solar System’s Interstellar Boundaries 2023-06-08T04:00:00Z The magnetic field acts as a "giant forcefield" that contains the sun's superheated plasma, or ionized gas, close to the surface, suppressing solar activity, he added. Solar Maximum Could Hit Us Harder And Sooner Than We Thought 2023-07-04T04:00:00Z These particle racetracks—rings of high-speed electrons and other charged particles—circle planets with strong magnetic fields, including Earth, Jupiter, and Saturn, but it was not known whether they existed in other planetary systems. News at a glance: An ancient Mars river, blood screening rules, and sex-research funds blocked 2023-05-17T04:00:00Z With this configuration, the device could keep the plasma constrained by using the magnetic fields generated by flows in the charged plasma itself. What Is the Future of Fusion Energy? 2023-06-05T04:00:00Z During the sun’s quiet periods — solar activity varies on an 11-year cycle, from comparatively calm to hyperactive — the sun’s magnetic field possesses this bar magnet configuration. How Solar Wind Flows From the Sun Like Water From a Shower Head 2023-06-07T04:00:00Z The strength of the Voyagers is that they directly measure magnetic fields and how the fields change over distance as the spacecraft travel farther out from the sun. Scientists Make Best-Yet Map of Solar System’s Interstellar Boundaries 2023-06-08T04:00:00Z But the magnetic field slowly gets tangled, with some regions becoming more magnetized than others, James said. Solar Maximum Could Hit Us Harder And Sooner Than We Thought 2023-07-04T04:00:00Z During a session, a strong magnetic field is used to stimulate or inhibit different parts of the brain. West NHS clinic to offer depression magnet therapy 2023-05-18T04:00:00Z Instead of using a large amount of plasma confined by magnetic fields, the NIF experiment ignites a tiny target of deuterium and tritium. What Is the Future of Fusion Energy? 2023-06-05T04:00:00Z But as the sun approaches the maximum of its cycle, when the magnetic field is in the throes of reversing direction, the structure of the field becomes more complex, and more coronal holes appear. How Solar Wind Flows From the Sun Like Water From a Shower Head 2023-06-07T04:00:00Z Along their outbound trajectories, both Voyagers now locally measure magnetic fields that are stronger than—and askew from—values extrapolated from IBEX’s remote all-sky observations of the undraped magnetic field farther out. Scientists Make Best-Yet Map of Solar System’s Interstellar Boundaries 2023-06-08T04:00:00Z About the size of Pluto, Earth’s inner core is made of solid iron and helps power the magnetic field that protects life from harmful space radiation. Quakes and blasts help scientists understand Earth’s elusive inner core 2023-05-17T04:00:00Z But there is a delightful band of radiation that surrounds the Earth, created courtesy of Earth's magnetic field, which repels some pretty nasty particles from space. For the first time, astronomers see an aurora in another star system 2023-05-17T04:00:00Z The resulting mire of turbulent plasma and magnetic fields could help explain why the star is currently much brighter than the 400-day cycle would predict. Betelguese’s Brightening Raises Hopes for a Supernova Spectacle 2023-05-15T04:00:00Z Spectra are astronomers’ most prized tool for exploring the cosmos, since they provide information on the chemical makeup of celestial objects, their temperatures, magnetic fields and so much more. JWST’s Exoplanet Images Are Just the Beginning of Astrobiology’s Future 2023-05-11T04:00:00Z The lights will be visible farther south because of a shift in the sun’s magnetic fields, which flip on an 11-year cycle. Get Ready to See More of the Northern Lights 2023-05-05T04:00:00Z As an accelerator physicist, he understood how electrons surf radio waves to gain energy, magnetic fields focus those particles, resonances can obliterate a beam, and synchrotron radiation itself kicks the electrons around. A farewell to the x-ray–generating particle accelerator that was my father’s baby 2023-05-03T04:00:00Z "When we're thinking about the habitability of exoplanets, the role of their magnetic fields in maintaining a stable environment is something to consider in addition to things like the atmosphere and climate." For the first time, astronomers see an aurora in another star system 2023-05-17T04:00:00Z One bone map from this project showed that magnetic fields tended to be perpendicular to the bone's length in dense areas of active star birth and more parallel elsewhere. How Magnetic Fields Control Galactic Growth 2023-04-29T04:00:00Z One of the most popular is the tokamak, a device that creates a magnetic field to contain the burning plasma generated by a fusion reaction in a doughnut-shaped ‘torus’. This Pioneering Nuclear-Fusion Lab Is Gearing up to Break More Records 2023-04-28T04:00:00Z The expanded visibility of the lights, created by activity in the sun’s magnetic field, has already begun, said Shannon Schmoll, the director of the Abrams Planetarium at Michigan State University. Get Ready to See More of the Northern Lights 2023-05-05T04:00:00Z That plasma can then be contained by powerful magnetic fields - an approach known as magnetic confinement fusion. The Israeli plan to fit a fusion reactor into a container 2023-04-27T04:00:00Z As mentioned, magnetic fields like Earth's serve an important purpose. For the first time, astronomers see an aurora in another star system 2023-05-17T04:00:00Z They also found magnetic fields along other galactic bones strong enough to dampen star formation in all but the most active areas. How Magnetic Fields Control Galactic Growth 2023-04-29T04:00:00Z And second, because of the decay of its strong magnetic field, which as Schmerr explained would mean the planet has less of a protective layer shielding it from solar winds. For the first time, scientists detect seismic waves rattling through Mars' core 2023-04-25T04:00:00Z The northern lights, or aurora borealis, are created when solar wind or charged particles from the sun interact with the earth’s magnetic field, exciting atoms in the atmosphere. Get Ready to See More of the Northern Lights 2023-05-05T04:00:00Z There are different ways to arrange the magnetic field. The Israeli plan to fit a fusion reactor into a container 2023-04-27T04:00:00Z Mars used to have a radiation belt, but it disappeared over time as its magnetic field all but disappeared. For the first time, astronomers see an aurora in another star system 2023-05-17T04:00:00Z Ultimately, he adds, this will lead to understanding how the balance between gravity and large-scale magnetic fields dictates star formation at the smallest scales, in other galaxies as well as our own. How Magnetic Fields Control Galactic Growth 2023-04-29T04:00:00Z But the bulk of it is liquid iron, which is similar to Earth's core; however, on Mars, this isn't enough for the planet to generate a strong magnetic field. For the first time, scientists detect seismic waves rattling through Mars' core 2023-04-25T04:00:00Z As the sun’s magnetic fields flip over 11 years, this cycle, phases between solar minimum and solar maximum, Dr. Cameron said. Get Ready to See More of the Northern Lights 2023-05-05T04:00:00Z When the solar wind and plasma from coronal ejections strike Earth’s magnetic field lines, our invisible shield vibrates like the strings of a harp. Want to listen to space noise? NASA wants to hear from you. 2023-04-23T04:00:00Z It is easier to describe light as rotating complex electric and magnetic fields than as oscillating real ones, despite the fact that there is no such thing as an imaginary electric field. Quantum Physics Falls Apart without Imaginary Numbers 2023-04-24T04:00:00Z Now researchers using an airplane-borne telescope high in Earth's atmosphere have found a mechanism for how magnetic fields shape star birth in the dense filaments, or “bones,” that wind their way through these arms. How Magnetic Fields Control Galactic Growth 2023-04-29T04:00:00Z The lack of a magnetic field is one of many reasons that living on Mars would be extremely hostile for anything living, especially humans, if some of us were to ever migrate there. For the first time, scientists detect seismic waves rattling through Mars' core 2023-04-25T04:00:00Z The solar cycle is tied to the sun’s magnetic field, Dr. Cameron said, but doesn’t affect its temperature. Get Ready to See More of the Northern Lights 2023-05-05T04:00:00Z The phenomenon is caused by the interaction of the solar wind and Earth's magnetic field and upper atmosphere, said the Met Office. In pictures: Northern lights display sends the skies purple 2023-04-24T04:00:00Z The burst of energy, which has its own magnetic field, had been moving through space and reached Earth’s magnetic field on Sunday, when the two collided to create a geomagnetic storm, he said. Northern Lights Are Seen in Places Where They Normally Aren’t 2023-04-24T04:00:00Z But researchers did not know the precise role of magnetic fields in star-forming activity at smaller scales. How Magnetic Fields Control Galactic Growth 2023-04-29T04:00:00Z However, there is evidence in certain rocks that Mars once had a magnetic field, but it was lost over time. For the first time, scientists detect seismic waves rattling through Mars' core 2023-04-25T04:00:00Z In contrast to the sun’s 11-year cycle, the earth’s magnetic field reverses every tens of thousands of years. Get Ready to See More of the Northern Lights 2023-05-05T04:00:00Z The technique measures small changes in the earth's magnetic field to detect archaeological features otherwise invisible from the ground surface. Archaeologists discover remains of Roman fortlet near Clydebank 2023-04-18T04:00:00Z Ganymede is not only the solar system’s largest moon — it surpasses Mercury — but has its own magnetic field with dazzling auroras at the poles. European spacecraft on way to Jupiter and its icy moons 2023-04-14T04:00:00Z For this work, the researchers are determining the fine-scale direction of these magnetic fields by measuring how dust particles align. How Magnetic Fields Control Galactic Growth 2023-04-29T04:00:00Z As Earth’s magnetic field convulsed under the assault, surges of current would destroy power grids. Marking time: Cosmic ray storms can pin precise dates on history from ancient Egypt to the Vikings 2023-04-13T04:00:00Z Black Beauty, for example, is the only known meteorite old enough to “remember” Mars’s magnetic field before it started to disappear about 4 billion years ago. Magnets wipe memories from meteorites, erasing billion-year-old data 2023-04-05T04:00:00Z Larger than Mercury, it is the only moon with its own magnetic field, produced by churning molten iron in its core. Spacecraft will explore habitability of Jupiter’s ocean moons 2023-04-05T04:00:00Z Auroras appear in the sky when charged particles ejected from the sun interact with Earth’s magnetic field. Northern Lights Dance across U.S. because of ‘Stealthy’ Sun Eruptions 2023-03-30T04:00:00Z To verify this tantalizing possibility, the orbiter will monitor the moons’ magnetic fields to see if any of the fields vary as a result of the internal sloshings of liquid water. NASA’s Uranus Mission Is Running Out of Time 2023-03-30T04:00:00Z Some particles travel along Earth’s magnetic field lines into the upper atmosphere, where they excite oxygen and nitrogen molecules and release photons of light. Auroras shine unusually far south amid strongest solar storm since 2017 2023-03-24T04:00:00Z Two decades ago, Weiss was studying rare meteorite samples to see whether some asteroids were ever big enough to have a dynamo—a churning molten core that generates magnetic fields. Magnets wipe memories from meteorites, erasing billion-year-old data 2023-04-05T04:00:00Z The energy comes from a coronal mass ejection, a large expulsion of plasma from the sun, which causes the magnetic field around Earth to shake. The Northern Lights Were Seen Farther South in the United States 2023-03-24T04:00:00Z When all of the charged particles from these events collided with Earth’s magnetic field, they had “more of an impact than we expected,” Murtagh says. Northern Lights Dance across U.S. because of ‘Stealthy’ Sun Eruptions 2023-03-30T04:00:00Z This week, there were some eruptions on the sun, which created a geomagnetic storm, disrupting the Earth’s magnetic field — and in turn initiated the display of the northern lights, according to Murtagh and his team. Some Californians saw a rare display of the northern lights. Here's why it happened 2023-03-24T04:00:00Z A common explanation is that Earth’s magnetic field is aligned in an optimal position to receive charged particles from the sun, which spur geomagnetic and aurora activity. Auroras shine unusually far south amid strongest solar storm since 2017 2023-03-24T04:00:00Z These devices apply a weak magnetic field that doesn’t erase the records, and they are better at identifying different types of meteorites. Magnets wipe memories from meteorites, erasing billion-year-old data 2023-04-05T04:00:00Z As it turned out, he said, there had been two ejections that got closer to Earth, helping to “give it an extra kick to the Earth” when the electrons reached the magnetic field. The Northern Lights Were Seen Farther South in the United States 2023-03-24T04:00:00Z It was a “perfect coupling” of the magnetic field of the particles and the magnetic field of Earth—and unfortunately, he says, such chance couplings are “impossible to predict.” Northern Lights Dance across U.S. because of ‘Stealthy’ Sun Eruptions 2023-03-30T04:00:00Z With the tilt of the Earth in relation to the Sun positioned at right angles during the equinox, the magnetic field is stronger resulting in a more vibrant aurora. Northern lights dazzle in display across the UK 2023-03-24T04:00:00Z That magnet now interacts with the Earth’s magnetic field. Auroras shine unusually far south amid strongest solar storm since 2017 2023-03-24T04:00:00Z The electrons emit x-rays as they wiggle through the magnetic fields. Compact x-ray laser would shrink billion-dollar machines to the size of a room 2023-03-22T04:00:00Z The magnetic field produced by a cyclotron accelerates particles to dizzying speeds. The Little-Known Origin Story behind the 2022 Nobel Prize in Physics 2023-03-16T04:00:00Z Around the spring and fall equinoxes, the tilt of Earth’s magnetic field couples particularly well with these charged particles from the sun, Pesnell says. Northern Lights Dance across U.S. because of ‘Stealthy’ Sun Eruptions 2023-03-30T04:00:00Z And what happens when an unreliable moral compass enters the magnetic field of a narcissist like Orson? Review | ‘Confidence’ skewers the rich in a most satisfying, clever way 2023-03-07T05:00:00Z This measurement is important because it indicates one sign of a superconductor: the ability to expel a magnetic field, a phenomenon called the Meissner effect. Controversy Surrounds Blockbuster Superconductivity Claim 2023-03-10T05:00:00Z The laser, like all electromagnetic emissions, has a magnetic field associated with it, says Bill Graves, an ASU physicist and CXFEL’s chief scientist. Compact x-ray laser would shrink billion-dollar machines to the size of a room 2023-03-22T04:00:00Z Magnetic measurements also showed the sample repelled an externally applied magnetic field, a hallmark of superconductors. ‘Revolutionary’ blue crystal resurrects hope of room temperature superconductivity 2023-03-08T05:00:00Z That point, called solar maximum, will likely occur in 2025, when the sun’s magnetic field flips. Northern Lights Dance across U.S. because of ‘Stealthy’ Sun Eruptions 2023-03-30T04:00:00Z Not only do superconductors carry electricity with essentially zero electrical resistance, but they also possess the strange ability known as the Meissner effect that ensures zero magnetic field inside the material. A Room-Temperature Superconductor Discovery Aims to Overcome Resistance 2023-03-08T05:00:00Z That shielding is particularly pronounced at the peak of the 11-year solar cycle, when the sun’s magnetic field is strongest. Mystery of Ancient Space Superstorms Deepens 2023-03-06T05:00:00Z The northern lights are produced by charged particles from the sun that hit Earth’s magnetic field. In a Rare Show, the Northern Lights Brightened the U.K. Night 2023-02-27T05:00:00Z The sun goes through an 11-year solar cycle measured in terms of how active its magnetic field is. Spectacular northern sighted across UK 2023-02-27T05:00:00Z Now, scientists have revealed a new, distinct layer within our planet’s inner core, which could help inform the evolution of Earth’s magnetic field. Scientists have discovered a new core at the center of the Earth 2023-02-24T05:00:00Z He focused on the measurements that Dr. Dias’s group had made of the response of the carbon-sulfur-hydrogen compound to oscillating magnetic fields, evidence of the Meissner effect. A Room-Temperature Superconductor Discovery Aims to Overcome Resistance 2023-03-08T05:00:00Z The answer might lie in the intricacies of Earth’s magnetic field, she says. Mystery of Ancient Space Superstorms Deepens 2023-03-06T05:00:00Z The sun has 11-year-long sunspot cycles, during which the level of ferocity in its magnetic fields grows and the sun ejects increasingly larger pieces of its atmosphere. In a Rare Show, the Northern Lights Brightened the U.K. Night 2023-02-27T05:00:00Z As this magnetic field changes, so does the amount of activity on the sun's surface. Spectacular northern sighted across UK 2023-02-27T05:00:00Z Researchers study the inner core to better understand Earth’s magnetic field, which protects us from harmful radiation in space and helps make life possible on our home planet. Scientists have discovered a new core at the center of the Earth 2023-02-24T05:00:00Z An MRI scanner employs a magnetic field to twirl atomic nuclei in living tissue—specifically the protons at the heart of hydrogen atoms—so that they emit radio waves. MRI for all: Cheap portable scanners aim to revolutionize medical imaging 2023-02-22T05:00:00Z “The reason people study the inner core structure is they try to link it to the Earth’s magnetic field,” Dr. Cormier said. What’s Inside the Earth’s Core? 2023-02-23T05:00:00Z Researchers in the US and China developed a material that reacts to magnetic fields and could eventually be used in medical procedures. Shape-shifting robot melts itself to escape lab jail 2023-02-17T05:00:00Z JUICE, after entering orbit around Ganymede in December 2034, will survey the entire surface and study the moon’s magnetic field—two key tasks for subsequent attempts to map the moon’s aquatic inner layers. At Jupiter, JUICE and Clipper Will Work Together in Hunt for Life 2023-02-16T05:00:00Z “The formation of the inner core was extremely important for creating a long-term habitable planet because the inner core powered the magnetic field, that powered magnetic shielding,” Tarduno said. Scientists have discovered a new core at the center of the Earth 2023-02-24T05:00:00Z However, an external magnetic field can align them. MRI for all: Cheap portable scanners aim to revolutionize medical imaging 2023-02-22T05:00:00Z “People will try to look for some change in the Earth’s magnetic field that may have occurred at the same time as the change in the crystallization of the inner core.” What’s Inside the Earth’s Core? 2023-02-23T05:00:00Z They are caused by the interaction of charged particles from the Sun with the Earth’s magnetic field. Bing’s A.I. Chat Reveals Its Feelings: ‘I Want to Be Alive. 😈’ 2023-02-16T05:00:00Z It can also be used to monitor slight local changes in the earth's magnetic field, making navigation systems much more precise, he said. Exclusive: Alphabet spinoff Sandbox AQ raises $500 mln for cyber security, other quantum work 2023-02-15T05:00:00Z "I have a pacemaker myself and I would not drop dead if the Earth's magnetic field stopped working because the pacemaker is an electronic device," Perkowitz remarked. How this laughable sci-fi flick embarrassed Hollywood into doing better science 2023-02-05T05:00:00Z To do this, it sculpts the magnetic field, which makes protons at different locations sing at different frequencies and states of synchrony. MRI for all: Cheap portable scanners aim to revolutionize medical imaging 2023-02-22T05:00:00Z “Our robot still needs an external heater for melting and external magnetic field for controlling the movement and shape changing,” he said. Scientists invented a melting liquid robot that can escape from a cage 2023-01-26T05:00:00Z “Everything here — other than rocks, water, and the magnetic field — was part of Verdance’s proprietary ecosystem development kit. And that meant every life form was legally the company’s property, including Destry and Whistle.” Review | ‘The Terraformers’ is a dazzling look at the distant future 2023-01-27T05:00:00Z It may also be possible to one day detect hints of the magnetic fields found in the new simulation. Star Cores Spin Surprisingly Slowly—Scientists Now Think They Know Why 2023-01-24T05:00:00Z "Turning off the surrounding very weak magnetic field that comes from the Earth wouldn't have the slightest effect on it and shouldn't stop it." How this laughable sci-fi flick embarrassed Hollywood into doing better science 2023-02-05T05:00:00Z One reason the signal dies out is that the protons knock one another out of alignment through their own magnetic fields. MRI for all: Cheap portable scanners aim to revolutionize medical imaging 2023-02-22T05:00:00Z At most, the inner core rotation might influence Earth’s overall spin and contribute to fluctuations in the planet’s magnetic field. Why Earth’s Inner Core May Be Slowing Down 2023-01-25T05:00:00Z When these magnetic fields suddenly shift or realign—as often happens in sunspot-pocked “active regions” of the solar surface—an enormous amount of energy is released. Should You Really Worry about Solar Flares? 2023-01-26T05:00:00Z “Very recently,” Marcotte says, “people have started inferring magnetic field measurements for the deep regions of stars. That was not possible before.” Star Cores Spin Surprisingly Slowly—Scientists Now Think They Know Why 2023-01-24T05:00:00Z "I have a pacemaker myself and I would not drop dead if the Earth's magnetic field stopped working." How this laughable sci-fi flick embarrassed Hollywood into doing better science 2023-02-05T05:00:00Z To do that, it relies on magnetic field gradients applied at key moments. MRI for all: Cheap portable scanners aim to revolutionize medical imaging 2023-02-22T05:00:00Z The solidification also drives the circulation of the outer core, which, in turn, creates the planet’s magnetic field. Why Earth’s Inner Core May Be Slowing Down 2023-01-25T05:00:00Z Solar flares arise within the sun’s roiling soup of plasma when charged particles thrash around one another to form intense magnetic field lines that can tangle and interweave. Should You Really Worry about Solar Flares? 2023-01-26T05:00:00Z Now a new simulation reveals the likely culprit: magnetic fields sustained by the turbulence deep inside the regions of stars where the energy created by nuclear fusion is transmitted outward. Star Cores Spin Surprisingly Slowly—Scientists Now Think They Know Why 2023-01-24T05:00:00Z When exposed to an alternating magnetic field, the particles heat up and melt the gallium. Watch this liquid metal robot slink out of jail 2023-01-25T05:00:00Z As the outer core's fluid motion generates a magnetic field for our planet, that same magnetic field drives the metallic inner core to rotate through electromagnetic force. Earth's inner core is no longer spinning as fast as the rest of the planet 2023-01-25T05:00:00Z The charged molecules create what is known as a “plasma torus” in Io’s wake: a doughnut-shaped cloud of ionized gas that collects in Jupiter’s magnetic field. A New View of the Most Explosive Moon in the Solar System 2023-01-25T05:00:00Z CMEs can and do pose threats to power grids by interacting with Earth’s magnetic field and inducing excess electrical currents along and through the planet’s surface that sometimes last for hours. Should You Really Worry about Solar Flares? 2023-01-26T05:00:00Z Thus, Marcotte says, scientists suspected that magnetic fields inside stars must also play a role, but exactly how they could form and be sustained was a mystery. Star Cores Spin Surprisingly Slowly—Scientists Now Think They Know Why 2023-01-24T05:00:00Z The magnetic field is then used to steer the liquid metal, which can pass through would-be prison bars with ease. Watch this liquid metal robot slink out of jail 2023-01-25T05:00:00Z "It may have some influence on the change over time in the magnetic field, which kind of disturbs our navigation a little bit." Earth's inner core is no longer spinning as fast as the rest of the planet 2023-01-25T05:00:00Z The Earth’s magnetic field shields the relatively close-in space station as well from some of the worst deep-space radiation, but the lunar and Mars missions — higher and farther from Earth — will not enjoy that protection. The many, many reasons space travel is bad for the human body Such events do become more likely at higher latitudes because of the tendency for a solar storm’s swarms of charged particles to accumulate around Earth’s poles, where the planet’s magnetic field is strongest. Should You Really Worry about Solar Flares? 2023-01-26T05:00:00Z As this plasma flows, the charged particles’ movement can create magnetic fields. Star Cores Spin Surprisingly Slowly—Scientists Now Think They Know Why 2023-01-24T05:00:00Z Geologists believe that the energy released by the inner core causes the liquid in the outer core to move, generating electrical currents that in turn spawn a magnetic field surrounding the planet. Earth’s inner core seems to be slowing its spin 2023-01-23T05:00:00Z Earth’s magnetic field, generated by swirling iron currents in the liquid outer core, is pulling at the inner core, causing it to spin. Earth’s Inner Core Paused, Then Reversed Its Spin. This Is Fine. 2023-01-23T05:00:00Z They’re also regions from which magnetic flux pours out; those magnetic field lines loop back and reconnect elsewhere on the sun’s surface. The sun is crackling with ‘solar flares’. Here’s what that means. 2023-01-12T05:00:00Z A magnetar is essentially what it sounds like: a neutron star with an extremely strong magnetic field. A weird, dead magnetized star has a solid surface — and a ring 2023-01-09T05:00:00Z Until now, one of the leading hypotheses of stellar slowdown held that the pull of these magnetic fields, amplified by plasma motions, slows the rotation of the star core. Star Cores Spin Surprisingly Slowly—Scientists Now Think They Know Why 2023-01-24T05:00:00Z But simulations of typical core-collapse supernovae couldn’t reproduce the neutron richness and thermodynamic conditions needed except, perhaps, in the case of rare explosions driven by strong magnetic fields. How Star Collisions Forge the Universe’s Heaviest Elements 2023-01-09T05:00:00Z Using data from other spacecraft, the researchers then created a model to simulate what was going on in the corona’s magnetic field and plasma. Scientists inch closer to understanding what drives the solar wind 2022-12-31T05:00:00Z Like stretched rubber bands, sometimes magnetic fields get contorted, causing pent-up energy that must be released. The sun is crackling with ‘solar flares’. Here’s what that means. 2023-01-12T05:00:00Z This solid crust, most likely made of iron, would warp the structure of atoms so they would no longer be spherical but stretched and elongated in the direction of the magnetic field. A weird, dead magnetized star has a solid surface — and a ring 2023-01-09T05:00:00Z In these regions, the role of the magnetic field in stellar slowdown was debated, Marcotte says, because no one had built a proper numerical model of how these magnetic fields could be generated. Star Cores Spin Surprisingly Slowly—Scientists Now Think They Know Why 2023-01-24T05:00:00Z It is possible that one of the players was a rare neutron star with an incredibly powerful magnetic field – called a magnetar. An unusual, long-lasting gamma-ray burst challenges theories about how they work 2023-01-01T05:00:00Z They conclude that the web’s magnetic field draws hot plasma from the middle corona, releasing energy and driving the solar wind. Scientists inch closer to understanding what drives the solar wind 2022-12-31T05:00:00Z Rivers carved canyons, lakes filled craters, and a magnetic field may have fended off space radiation, keeping it from eating away the atmospheric moisture. Mars had long-lived magnetic field, extending chances for life 2022-12-19T05:00:00Z "A next step is to observe hotter neutron stars with a similar magnetic field, to investigate how the interplay between temperature and magnetic field affects the properties of the star's surface." A weird, dead magnetized star has a solid surface — and a ring 2023-01-09T05:00:00Z By modeling plasma flow in these regions in the new study, the researchers found that even here, stars can generate magnetic fields, which then slow the star core’s spin. Star Cores Spin Surprisingly Slowly—Scientists Now Think They Know Why 2023-01-24T05:00:00Z Auroras are found on any planet with an atmosphere and a magnetic field, which steers the sun's particles to the poles; besides Earth and Jupiter, telescopes have seen auroras on Saturn, Uranus and Neptune. The Best of JWST’s Cosmic Portraits 2022-12-20T05:00:00Z To understand the mysterious mechanism of earth’s magnetic field, geophysicists track its changes throughout history by using archaeological relics — furnaces, ceramic shards and roof tiles — that contain ferromagnetic minerals. Archaeologists Devise a Better Clock for Biblical Times 2022-12-20T05:00:00Z As the martian interior cooled, leading theories hold, its magnetic field died out, leaving the atmosphere undefended and ending this warm and wet period, when the planet might have hosted life. Mars had long-lived magnetic field, extending chances for life 2022-12-19T05:00:00Z Most nuclear fusion experiments have used doughnut-shaped reactors and magnetic fields to trap hydrogen, fuse it and release energy. Turning Sci-fi Into Reality 2022-12-14T05:00:00Z The process played out in an unexpected way in their simulations: Initially, an orderly plasma flow exponentially strengthened the magnetic fields in these regions. Star Cores Spin Surprisingly Slowly—Scientists Now Think They Know Why 2023-01-24T05:00:00Z In a tokamak, microwaves and particle beams heat the fuel and magnetic fields trap it. With historic explosion, a long sought fusion breakthrough 2022-12-13T05:00:00Z The more recent study reconstructed the magnetic field recorded in burned remains at biblical sites in present-day Israel that were razed by fire. Archaeologists Devise a Better Clock for Biblical Times 2022-12-20T05:00:00Z Because the two older mineral populations are highly magnetized, Fu says, a global magnetic field must still have been present at 3.9 billion years ago. Mars had long-lived magnetic field, extending chances for life 2022-12-19T05:00:00Z The spacecraft will help the development of technology for future Korean missions, and it also carries scientific instruments to study the moon’s chemical composition and magnetic field. Next Launch to the Moon: A Japanese Company’s Lunar Lander 2022-12-11T05:00:00Z This chaotic turbulent motion built up each magnetic field even more, which in turn strengthened the turbulence in a self-sustaining loop, Gissinger says. Star Cores Spin Surprisingly Slowly—Scientists Now Think They Know Why 2023-01-24T05:00:00Z It could detect distant exoplanets in a new way, by looking for the low-frequency radio flares whipped up when planetary magnetic fields interact with those of their host stars. Hero city: Crippled by Russian attacks, Ukraine’s science hotbed refuses to give up 2022-12-06T05:00:00Z So long as the objects don’t heat up again, they will retain what is effectively a fossilized magnetic field. Archaeologists Devise a Better Clock for Biblical Times 2022-12-20T05:00:00Z In an AGU presentation, Steele used computer simulations to show layers of alternating magnetic fields could essentially cancel out the net magnetic field of the basins—making them appear to be demagnetized. Mars had long-lived magnetic field, extending chances for life 2022-12-19T05:00:00Z They found layers in the sediment in which the minerals revealed that the Earth’s magnetic field had flipped. Oldest Known DNA Paints Picture of a Once-Lush Arctic 2022-12-07T05:00:00Z “At some point, the magnetic field becomes so large that it will exert a torque on the internal region of the star, and it will spin down,” he says. Star Cores Spin Surprisingly Slowly—Scientists Now Think They Know Why 2023-01-24T05:00:00Z A nearby stimulator sends an electrical current to the coil, which transforms the current into a magnetic field. Patients suffering with hard-to-treat depression may get relief from magnetic brain stimulation 2022-12-06T05:00:00Z Besides helping to date archaeological contexts, the technology provides invaluable information on Earth’s magnetic field, one of the most enigmatic phenomena in geoscience. Archaeologists Devise a Better Clock for Biblical Times 2022-12-20T05:00:00Z Intriguing new findings illustrate how birds use Earth's magnetic field to migrate thousands of miles every year, a long-standing mystery in biology. A Year of Wonder, Awe and Discovery 2022-12-01T05:00:00Z The human body is exquisitely tuned to one G of gravity and a magnetic field, neither of which is present on the moon or Mars. Opinion | Artemis says, to the moon! But it might simply prove our human limits. 2022-11-25T05:00:00Z Once this pattern is established, the magnetic field and the turbulence continue to sustain each other, Marcotte says, even if the conditions in the star change to be less prone to these chaotic motions. Star Cores Spin Surprisingly Slowly—Scientists Now Think They Know Why 2023-01-24T05:00:00Z Scientists point to something Mars lacks today: a global magnetic field like Earth’s. Mars rover digs up intriguing clues in the hunt for life beyond Earth 2022-11-23T05:00:00Z It even has a little magnetic field, just like a spinning object with electric charge should. Quantum Particles Aren’t Spinning. So Where Does Their Spin Come From? 2022-11-22T05:00:00Z Space weather affects Earth thanks to the magnetic field that forms a shield between Earth and space. Loss of 38 satellites prompts call for better space weather forecasts 2022-11-19T05:00:00Z Sarkar and her team machined their experimental antenna from a “magnetostrictive” material—one that changes shape when exposed to a magnetic field. Tiny ‘Rover’ Explores Cells without Harming Them 2022-11-21T05:00:00Z When a ferrite—a nonmetallic material with magnetic properties—is subject to a constant magnetic field, its molecules sustain tiny circulating currents that rotate with a handedness determined by the magnetic field orientation. Engineered Metamaterials Can Trick Light and Sound into Mind-Bending Behavior 2022-11-18T05:00:00Z Somewhere along the way, Mars’s magnetic field died, and then it became a different kind of planet. Mars rover digs up intriguing clues in the hunt for life beyond Earth 2022-11-23T05:00:00Z Developed in Denmark, the system uses electricity to create a magnetic field. From the air, scientists map 'fast paths' for recharging California's groundwater 2022-11-18T05:00:00Z This term describes how strongly a muon interacts with a magnetic field. Rule-Breaking Particles Pop Up in Experiments around the World 2022-11-14T05:00:00Z When an alternating-current magnetic field is applied to this magnetostrictive antenna, the north and south poles of its molecules align themselves with the changing magnetic field, flipping back and forth, which stretches the material. Tiny ‘Rover’ Explores Cells without Harming Them 2022-11-21T05:00:00Z The difference in energy is proportional to the applied magnetic field. Engineered Metamaterials Can Trick Light and Sound into Mind-Bending Behavior 2022-11-18T05:00:00Z As lava cools, it crystallizes into igneous rock, freezing electrons within iron-bearing minerals into patterns that could reveal a magnetic field’s traits, such as its orientation. Mars rover digs up intriguing clues in the hunt for life beyond Earth 2022-11-23T05:00:00Z That, in turn, allows the MRI scanners to create the high-intensity magnetic fields necessary to function properly. A helium shortage might mean you can't get the medical scans you need. Here's why 2022-11-03T04:00:00Z In some cases, the magnetism can be 100 million times to 1 quadrillion times stronger than Earth's magnetic field. This star could be a bizarre "strange star" made of matter that shouldn't exist 2022-10-27T04:00:00Z In other words, the external magnetic field can signal the Cell Rover using waves with frequencies outside the harmful microwave range. Tiny ‘Rover’ Explores Cells without Harming Them 2022-11-21T05:00:00Z It is likely caused by electrons—a by-product of the protons that trigger the typical green aurora—raining onto Earth's magnetic field. News Briefs from around the World: October 2022 2022-10-15T04:00:00Z The findings showed changes in the magnetic field near the sites 24 to 72 hours before an earthquake, according to the study authors. Modest changes in magnetic field along fault lines preceded major earthquakes in California, study finds 2022-10-13T04:00:00Z The probe found that the moon distorts Jupiter’s surrounding magnetic field in a telltale way that is indicative of some electrically conductive fluid lurking beneath the surface. Jupiter’s Ocean Moon Europa Is Ready for Its Close-up 2022-10-13T04:00:00Z Other data, in particular magnetic field measurements indicating an electrically conducting layer like a salty ocean, convinced planetary scientists that an ocean indeed flows on Europa. New Europa Pictures Beamed Home by NASA’s Juno Spacecraft 2022-09-30T04:00:00Z The gold standard is to provide evidence of another key attribute of superconductors: their ability to expel an applied magnetic field when they cross Tc and become superconducting. ‘Something is seriously wrong’: Room-temperature superconductivity study retracted 2022-09-26T04:00:00Z Finally, such a planet would orbit a star older than the Sun to give life longer to develop, and it would have a strong magnetic field that protects against cosmic radiation. Are super-Earths more life-sustaining than our planet? 2022-09-24T04:00:00Z The data from two stations was also compared to other time periods to help eliminate false positives, according to the study authors, because the magnetic field is always active. Modest changes in magnetic field along fault lines preceded major earthquakes in California, study finds 2022-10-13T04:00:00Z Juno has nine different research instruments, and as the spacecraft flew past Europa, they collected data on the moon’s magnetic field, gravitational field and almost nonexistent “atmosphere” of dilute gas. Jupiter’s Ocean Moon Europa Is Ready for Its Close-up 2022-10-13T04:00:00Z Researchers also want to use lab tools to detect ancient magnetic fields frozen into certain volcanic minerals. Mars rover nears milestone in ambitious plan to to return first rocks from another planet 2022-09-20T04:00:00Z The cause, most likely, was the twisting and recombining of magnetic fields inside the matter orbiting the black hole—the same basic dynamic that causes solar flares in our own star. The First Milky Way Black Hole Image Lets Scientists Test Physics 2022-09-19T04:00:00Z New images from the European Solar Orbiter may shed light on mysterious shifts in the Sun’s magnetic field and could help explain why the solar wind blows at two different speeds. News at a glance: Immunotherapy for lupus, near-instant health effects of racism, and forest loss from mining 2022-09-14T04:00:00Z Think of sensors like a microphone that is sensitive to changes in the magnetic field, according to the study’s authors. Modest changes in magnetic field along fault lines preceded major earthquakes in California, study finds 2022-10-13T04:00:00Z Perhaps even magnetic fields arose earlier in the universe than we thought, playing a crucial role in driving material to kick-start the birth of stars. JWST’s First Glimpses of Early Galaxies Could Break Cosmology 2022-09-14T04:00:00Z Mars lacks a magnetic field today, but meteorites from the planet show traces of an ancient field. Mars rover nears milestone in ambitious plan to to return first rocks from another planet 2022-09-20T04:00:00Z The data—released yesterday from the European Space Agency’s Solar Orbiter—shed literal light on shifts in the Sun’s magnetic field known as switchbacks. Whip-cracking flux in Sun’s magnetic field could explain slow solar wind 2022-09-13T04:00:00Z Scientists had previously seen evidence of switchbacks in magnetic field data, but the images of them reported last week in The Astrophysical Journal Letters are a first. News at a glance: Immunotherapy for lupus, near-instant health effects of racism, and forest loss from mining 2022-09-14T04:00:00Z “While we still have much work to do in identifying stronger signals, this research supports our vision that earthquake forecasting using the magnetic field may one day be possible.” Modest changes in magnetic field along fault lines preceded major earthquakes in California, study finds 2022-10-13T04:00:00Z “We might be seeing a signature of magnetic fields emerging very early in the universe’s history,” Spergel says. JWST’s First Glimpses of Early Galaxies Could Break Cosmology 2022-09-14T04:00:00Z "If we get a better measurement of gravity and magnetic fields of those planets, then we'll have much stronger constraints for the planetary interiors." Why "diamond rain" could be normal weather across the universe 2022-09-08T04:00:00Z The plasma travels out along the Sun’s magnetic field lines, which radiate away from the star in all directions. Whip-cracking flux in Sun’s magnetic field could explain slow solar wind 2022-09-13T04:00:00Z The findings support the idea that slower solar winds arise from switchbacks in looping magnetic field lines. News at a glance: Immunotherapy for lupus, near-instant health effects of racism, and forest loss from mining 2022-09-14T04:00:00Z To make their plasma-confining magnetic fields, tokamaks and stellarators employ electromagnetic coils looping around the vessel and through the central hole. Twisty device explores alternative path to fusion 2022-09-06T04:00:00Z The dispatches include valuable scientific data about interstellar magnetic fields, cosmic rays and plasma waves. JPL tries to keep Voyager space probes from disconnecting the world’s longest phone call 2022-09-03T04:00:00Z Soviet scientists designed a machine called a tokamak — a doughnut-shaped device that uses magnetic fields to confine plasma and heat it to the outrageously high temperatures needed for hydrogen nuclei to smash together. Nuclear fusion power inches closer to reality 2022-08-26T04:00:00Z In 2018, the Parker probe observed thousands of unusual, perplexing fluctuations in the direction of the Sun’s magnetic field lines. Whip-cracking flux in Sun’s magnetic field could explain slow solar wind 2022-09-13T04:00:00Z As Orion swings around the moon, the spacecraft will be flying far beyond Earth’s protective magnetic field, in a realm relatively riddled with high-energy cosmic particles that can damage cells and DNA. NASA’s Artemis I Moon Mission Is ‘Go’ for Launch 2022-08-24T04:00:00Z That streaming generates another magnetic field, twisting the ionized gas like a candy cane and steadying it. Twisty device explores alternative path to fusion 2022-09-06T04:00:00Z Dr. Damadian’s early work, colleagues said, had an important but more limited focus: exploring how cancer cells produced different radio signatures than normal cells after being tugged by a magnetic field. Raymond Damadian, who created first MRI machine, dies at 86 2022-08-18T04:00:00Z A magnetic field is caused by a magnet or a moving electrically charged object. College Physics for AP Courses 2015-08-12T00:00:00Z The Sun’s magnetic field mostly consists of closed loops of magnetism that arc off its surface before curving back. Whip-cracking flux in Sun’s magnetic field could explain slow solar wind 2022-09-13T04:00:00Z Diamagnetic substances have a slight tendency to be repelled by magnetic fields. Chemistry 2019-02-14T00:00:00Z In early stellarators, the geometry of the magnetic field caused some slower moving particles to follow banana-shaped orbits until they collided with other particles and got knocked out of the plasma, leaching out energy. Twisty device explores alternative path to fusion 2022-09-06T04:00:00Z This magnetic field is generated by moving material in Earth’s liquid metallic core. Astronomy 2016-10-13T00:00:00Z A magnetic dipole placed in a magnetic field, such as the ones created by a magnet or the Earth, will tend to align with the magnetic field vector. College Physics for AP Courses 2015-08-12T00:00:00Z Less commonly, some magnetic field lines, known as open field lines, stream straight out into space. Whip-cracking flux in Sun’s magnetic field could explain slow solar wind 2022-09-13T04:00:00Z By itself, O2 is not magnetic, but it is attracted to magnetic fields. Chemistry 2019-02-14T00:00:00Z By varying the magnetic field produced by each coil, operators will be able to change the shape of the applied field at will. Twisty device explores alternative path to fusion 2022-09-06T04:00:00Z Note how the wind of charged particles from the Sun “blows” the magnetic field outward like a wind sock. Astronomy 2016-10-13T00:00:00Z The magnetic properties of some materials can be affected by magnetic fields at the system. College Physics for AP Courses 2015-08-12T00:00:00Z Other mechanisms may generate S-curve kinks in the magnetic field, he says, such as atmospheric turbulence in the Sun’s ambient magnetic field. Whip-cracking flux in Sun’s magnetic field could explain slow solar wind 2022-09-13T04:00:00Z Magnetic susceptibility measures the force experienced by a substance in a magnetic field. Chemistry 2019-02-14T00:00:00Z Working with rats, he discovered that when tissues were placed in a magnetic field and hit with a pulse of radio waves, cancerous ones emitted distinctly different radio signals than healthy ones. Raymond Damadian, Creator of the First M.R.I. Scanner, Dies at 86 2022-08-17T04:00:00Z Jupiter has the strongest magnetic field and largest magnetosphere of any planet, first discovered by radio astronomers from observations of synchrotron radiation. Astronomy 2016-10-13T00:00:00Z Since magnetic forces act at a distance, we define a magnetic field to represent magnetic forces. College Physics for AP Courses 2015-08-12T00:00:00Z A copper coil beneath the cooktop generates a magnetic field when a current is introduced. Looking for a new stove? Step off the gas and go electric | Produced by Seattle Times Marketing 2022-08-16T04:00:00Z Unlike oxygen, the apparent weight of most molecules decreases slightly in the presence of an inhomogeneous magnetic field. Chemistry 2019-02-14T00:00:00Z Unprotected by Earth’s magnetic field, organisms are more vulnerable to DNA damage caused by solar outbursts and galactic cosmic rays—a real concern for astronauts traveling to the Moon or Mars. Stowaways on NASA’s massive Moon rocket promise big science in small packages 2022-08-15T04:00:00Z Trapped by the magnetic field of the Galaxy, the particles from exploded stars continue to circulate around the vast spiral of the Milky Way. Astronomy 2016-10-13T00:00:00Z As shown in Figure 22.16, the direction of magnetic field lines is defined to be the direction in which the north end of a compass needle points. College Physics for AP Courses 2015-08-12T00:00:00Z During a solar maximum, sunspots proliferate, marking weak points in the magnetic field, where plasma from the Sun’s atmosphere can lash out in violent loops. Nearby star’s midlife crisis illuminates the future of our own Sun 2022-08-09T04:00:00Z Materials in which all of the electrons are paired are diamagnetic and weakly repel a magnetic field. Chemistry 2019-02-14T00:00:00Z The moon’s interior no longer generates a magnetic field, but it once did, and that primordial field is preserved in lava flows that hardened during this era. South Korea Is Scouting Out the Moon, With More Missions to Come 2022-08-05T04:00:00Z Any magnetic field that existed in the original star will be highly compressed when the core collapses to a neutron star. Astronomy 2016-10-13T00:00:00Z Extensive exploration of magnetic fields has revealed a number of hard-and-fast rules. College Physics for AP Courses 2015-08-12T00:00:00Z If it took place instantaneously, birds would be none the wiser because their compass is not sensitive to the polarity of the magnetic field. Readers Respond to the April 2022 Issue 2022-08-01T04:00:00Z Only in the presence of an applied magnetic field do they demonstrate attraction or repulsion. Chemistry 2019-02-14T00:00:00Z Dr. Garrick-Bethell said it was puzzling that “such a small little iron core could have generated such a strong magnetic field.” South Korea Is Scouting Out the Moon, With More Missions to Come 2022-08-05T04:00:00Z Figure 23.16 shows the poles of the magnetic field perpendicular to the poles of rotation, but the two kinds of poles could make any angle. Astronomy 2016-10-13T00:00:00Z If magnetic monopoles existed, then magnetic field lines would begin and end on them. College Physics for AP Courses 2015-08-12T00:00:00Z But the reversal typically takes several thousand years, during which time the local magnetic field intensity can be very much smaller than it is today. Readers Respond to the April 2022 Issue 2022-08-01T04:00:00Z |
| 随便看 |
|
英语例句辞典收录了117811条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。