| 单词 | magnetic pole |
| 例句 | “He made a name for himself a year or two before that, with his paper on the variations in the magnetic pole,” said the Yoruba. The Subtle Knife 1997-01-01T00:00:00Z When a charged particle bounces from one magnetic pole to the other, it must cross the equatorial plane of Saturn. Cosmos 1980-01-01T00:00:00Z It was as if her magnetic poles had reversed and where they had once attracted now repelled. Flowers for Algernon 1959-05-01T00:00:00Z In effect they "remember" where the magnetic poles were at the time of their creation. A Short History of Nearly Everything 2003-05-06T00:00:00Z He guesses it makes sense—they’ve always been fixed points in each other’s worlds, little magnetic poles. Red, White & Royal Blue 2019-05-14T00:00:00Z “How medieval. However, he seems to have some very modern powers. What has he done to the magnetic pole?” The Subtle Knife 1997-01-01T00:00:00Z What emerges from this retrospective is a picture of Nordic artists tugged between two magnetic poles: the shadowy mystique of the north and the bright sophistication of Paris, where many of them studied. Art Review: ?Luminous Modernism? at Scandinavia House - Review 2011-12-01T22:55:09Z Sex and death, the magnetic poles of fiction, attract us children's writers no less than adult authors, but we have to be more leery of their pull. Teen fiction and the shadow of cancer 2013-01-26T10:00:01Z Seeming and being were, and remain, magnetic poles of Basquiat’s genius, and elements of a fungible myth. Let’s Pause to Appreciate Basquiat’s Hundred-Million-Dollar Painting 2017-05-26T04:00:00Z For 45 minutes, the players listened intently, their sounds colliding and fusing as Ms. Burgon gradually raised the oscillator’s frequency to the point at which, in theory, the planet’s magnetic poles shift alignment. Music Review: Pauline Oliveros and Olivia Block Find the Unconventional 2013-09-15T22:03:58Z “Complexity” and “mystery” are the magnetic poles Robinson navigates by, primary sources the water she swims in, “reductionism” the recurring object of her contempt. Democracy’s Fierce Defender 2018-03-09T05:00:00Z Family, home and work are magnetic poles in my life; at times, I need to consult my personal compass away from the strong pull that they exert. You’re a different person when you travel. Here’s why, and how to transform yourself at home. 2021-10-07T04:00:00Z When electrons moving through a metal encounter a magnetic atom, they are affected by the atom's spin -- the magnetic pole of elementary particles. Riddle of Kondo effect solved in ultimately thin wires 2023-11-15T05:00:00Z But at this point, with several years of sunspot activity having nearly eliminated the star’s magnetic poles, a reversal is on the horizon. The Sun’s Magnetic Poles Are Vanishing 2023-10-20T04:00:00Z This can lead to gradual shifts in the intensity and location of Earth’s magnetic north and south poles and even reversals where Earth’s magnetic poles trade places. Earth's shifting magnetic poles don't cause climate change—the conspiracy theory debunked 2023-07-03T04:00:00Z Those particles plunge toward the north and south magnetic poles and crash into gas molecules in the upper atmosphere, briefly energizing them and liberating various hues of visible light. New Auroras Found Glowing in the Skies of Jupiter’s Moons 2023-02-16T05:00:00Z Since isolated north and south magnetic poles, called magnetic monopoles, are not observed, currents are used to explain all magnetic effects. College Physics for AP Courses 2015-08-12T00:00:00Z In the same way, we discussed in the chapter on The Giant Planets that the magnetic poles on the planets Uranus and Neptune are not lined up with the poles of the planet’s spin. Astronomy 2016-10-13T00:00:00Z The reversal of the sun’s magnetic poles typically signals that solar maximum is nearing, and sunspot tallies will begin to wane, scientists say. The Sun’s Magnetic Poles Are Vanishing 2023-10-20T04:00:00Z Scientists have known for decades that our Sun’s activity surges and ebbs on a roughly 11-year cycle, which corresponds to how often its magnetic poles flip their orientation. Nearby star’s midlife crisis illuminates the future of our own Sun 2022-08-09T04:00:00Z If they do this every day, it does not matter where the magnetic poles are. Readers Respond to the April 2022 Issue 2022-08-01T04:00:00Z Crucial to the statement that electric current is the source of all magnetism is the fact that it is impossible to separate north and south magnetic poles. College Physics for AP Courses 2015-08-12T00:00:00Z A diagram showing how beams of radiation at the magnetic poles of a neutron star can give rise to pulses of emission as the star rotates. Astronomy 2016-10-13T00:00:00Z In their liquid state as magma or lava, the magnetic poles of the minerals align themselves with the Earth’s magnetic field. An Introduction to Geology 2017-01-01T00:00:00Z A spontaneous reversal of the black hole's magnetic poles could be the culprit, according to the latest hypothesis, but the debate is far from settled. Astronomers see a big boom when a black hole's magnetic field suddenly flips over 2022-05-10T04:00:00Z "The hydrogen fuel can be contained at the base of the magnetic poles of some white dwarfs, so that fusion only happens at these magnetic poles." A supernova in miniature: Bizarre "micronovas" are exploding in small stars, astronomers say 2022-04-25T04:00:00Z North magnetic poles are those that are attracted toward the Earth’s geographic north pole. College Physics for AP Courses 2015-08-12T00:00:00Z At the two magnetic poles, the particles from the neutron star are focused into a narrow beam and come streaming out of the whirling magnetic region at enormous speeds. Astronomy 2016-10-13T00:00:00Z The team wondered if the hydrogen that the white dwarfs were pulling off of their neighboring stars was getting funneled onto the stars’ magnetic poles. "Micronova" explosions spotted on distant zombie stars 2022-04-20T04:00:00Z Some thought it could even help explain why Earth’s magnetic poles wander and flip from time to time. Scientists are probing the secrets of Earth’s inner core—and how it saved life on our planet 2022-03-30T04:00:00Z The tree lived through a lengthy disintegration of the magnetic field, a period known as the Laschamp excursion, when the magnetic poles attempted unsuccessfully to switch places. A Hitchhiker’s Guide to an Ancient Geomagnetic Disruption 2021-02-18T05:00:00Z There are two types of magnetic poles, called the north magnetic pole and south magnetic pole. College Physics for AP Courses 2015-08-12T00:00:00Z As the rotation carries first one and then the other magnetic pole of the star into our view, we see a pulse of radiation each time. Astronomy 2016-10-13T00:00:00Z Charged particles streaming out from our Sun will often get trapped in our magnetic field, where they are then transported to our planet’s northern and southern magnetic poles. "Micronova" explosions spotted on distant zombie stars 2022-04-20T04:00:00Z A new study models how a gigantic, morphing blob of liquid iron in Earth's outer core underneath the Canadian Arctic is losing its grip on the North magnetic pole. In Case You Missed It 2020-08-16T04:00:00Z And what about other disturbances of the magnetic field, including that time 780,000 years ago when the magnetic poles actually did switch places? A Hitchhiker’s Guide to an Ancient Geomagnetic Disruption 2021-02-18T05:00:00Z The X-rays originate from million-degree hotspots on a pulsar’s surface, where a powerful magnetic field rips charged particles off the exterior and slams them back down at the opposing magnetic pole. The golden age of neutron-star physics has arrived 2020-03-03T05:00:00Z Whenever sunspots are observed in pairs, or in groups containing two principal spots, one of the spots usually has the magnetic polarity of a north-seeking magnetic pole and the other has the opposite polarity. Astronomy 2016-10-13T00:00:00Z Lab setups are simple, with positive and negative magnetic poles that pull cells toward one end of a dish or the other. Watch scientists use electricity to herd skin cells, like sheep 2020-01-14T05:00:00Z The planetarium at Illinois State University is hosting a free program on the reversal of the Earth’s magnetic poles. ISU planetarium hosting free show on magnetic pole reversal 2019-07-13T04:00:00Z But because the sun's north and south magnetic pole are flipped at the end of each cycle, McIntosh prefers to talk about an extended 22-year cycle. Scientists tackle a burning question: When will our quiet sun turn violent? 2019-05-30T04:00:00Z As these two geographically opposed magnetic poles are reflections of each other, it was once assumed that the auroras would be the same too. The Northern and Southern Lights Are Asymmetric Dancers in the Dark 2019-02-06T05:00:00Z Electrical outages due to CMEs are more likely to occur in North America than in Europe because North America is closer to Earth’s magnetic pole, where the currents induced by CMEs are strongest. Astronomy 2016-10-13T00:00:00Z Curiously, the south magnetic pole hasn’t mirrored the peregrinations of its northern counterpart. The North Pole is mysteriously moving, and the U.S. government finally caught up 2019-02-05T05:00:00Z The planet’s magnetic poles reverse from time to time, with north becoming south and south becoming north. ISU planetarium hosting free show on magnetic pole reversal 2019-07-13T04:00:00Z If you were to use the current model to travel to the north magnetic pole, you would end up 25 miles away from where the pole actually resides. The North Pole’s mysterious journey across the Arctic 2019-02-04T05:00:00Z The shifting magnetic pole is a problem for compasses. Check your compass: The magnetic north pole is on the move 2019-02-04T05:00:00Z However, the magnetic field lines come into Earth at the north and south magnetic poles. Astronomy 2016-10-13T00:00:00Z Beggan said the recent shifts in the north magnetic pole would be unnoticed by most people outside the Arctic, for instance using smartphones in New York, Beijing or London. Shifting north magnetic pole forces unprecedented navigation fix 2019-01-11T05:00:00Z Second, the motion of the north magnetic pole made the problem worse. Earth’s magnetic field is acting up and geologists don’t know why 2019-01-08T05:00:00Z Just after the model was released, the north magnetic pole picked up momentum again, and now it is fluctuating at around 35 miles per year. The North Pole’s mysterious journey across the Arctic 2019-02-04T05:00:00Z One paper posits that the Gleissberg pattern is caused by a slow swaying of the sun's magnetic pole. The Sunspot Cycle Is More Intricate Than Previously Thought 2018-07-31T04:00:00Z When such particles reach the vicinity of Earth, they produce auroras, which are strongest near Earth’s magnetic poles. Astronomy 2016-10-13T00:00:00Z That will always be true for the planet’s geographic poles, but it’s only intermittently true for the planet’s magnetic poles. 10 Strange Things You (Probably) Didn't Know About Earth 2018-03-16T04:00:00Z “The location of the north magnetic pole appears to be governed by two large-scale patches of magnetic field, one beneath Canada and one beneath Siberia,” Livermore says. Earth’s magnetic field is acting up and geologists don’t know why 2019-01-08T05:00:00Z Livermore thinks there are two large magnetic structures in the planet’s outer core, one beneath Canada and one beneath Siberia, which interact together to emit the magnetic pole. The North Pole’s mysterious journey across the Arctic 2019-02-04T05:00:00Z What’s more, the anomaly may have something to do with Earth’s shifting magnetic poles. What Ancient African Huts Reveal About Earth's Magnetic Flips 2018-03-05T05:00:00Z The trains work by using magnetic poles to repel and propel a train to incredible speeds. Black Panther’s Wakanda is a transportation utopia with a dash of reality 2018-02-23T05:00:00Z For now, Earth’s north magnetic pole is creeping northward by about 40 miles a year. 10 Strange Things You (Probably) Didn't Know About Earth 2018-03-16T04:00:00Z The North magnetic pole is absolutely running through the Northern Hemisphere at 55 kilometers a year to the northwest. Earth's Poles Will Eventually Flip, So What Then? 2018-02-01T05:00:00Z In the mid-19th century, the north magnetic pole floated much farther south, roaming around Canada. The North Pole’s mysterious journey across the Arctic 2019-02-04T05:00:00Z The dynamo is also what creates magnetic poles at each axis that roughly track with the geographic North and South Poles. What Ancient African Huts Reveal About Earth's Magnetic Flips 2018-03-05T05:00:00Z If geologic history repeats itself, Earth’s magnetic poles should eventually swap places. No, We’re Not All Doomed by Earth’s Magnetic Field Flip 2018-01-31T05:00:00Z The north magnetic pole replaced the south, and vice versa, an event recorded in volcanic rocks across the globe. How the planet’s poles keep trading places 2018-01-29T05:00:00Z And when the magnetic poles shift more than five degrees, those rounded numbers need to be changed. Pilots, check your bearings: Boeing Field catches up with Earth’s magnetic field 2017-08-16T04:00:00Z Although the north magnetic pole has long been scurrying away from Canada and toward Siberia, the rate of its movement drastically changes. The North Pole’s mysterious journey across the Arctic 2019-02-04T05:00:00Z During the age of dinosaurs, Earth’s magnetic poles flipped about once every million years. What Ancient African Huts Reveal About Earth's Magnetic Flips 2018-03-05T05:00:00Z The sun goes through an 11-year cycle where its magnetic poles flip — imagine the north and south poles on Earth changing place — and during this time the sun’s activity changes between subdued and tumultuous. Unlocking Mysteries in the Sun’s 11-Year Cycle 2017-07-14T04:00:00Z So, will the north magnetic pole soon become the south, or is this just a transient episode to be followed by a rebound in magnetic-field strength? How the planet’s poles keep trading places 2018-01-29T05:00:00Z And the field is continuing to grow weaker, potentially portending even more dramatic events, including a global reversal of the magnetic poles. A pole reversal: Scientists discuss an anomaly in the Earth’s magnetic field 2017-02-08T05:00:00Z First, while the north magnetic pole does appear to be on the move, it doesn’t represent a global phenomenon, just a regional one. The North Pole’s mysterious journey across the Arctic 2019-02-04T05:00:00Z But minerals in rocks that respond to magnetic cues show that—unlike the physical poles—the north and south magnetic poles have swapped places regularly over Earth’s 4.54 billion years of existence. What Ancient African Huts Reveal About Earth's Magnetic Flips 2018-03-05T05:00:00Z When clouds of ejected material and energy from the sun hit Earth’s donut-shaped magnetic field, some of it is deflected, but the rest is shunted toward the ground near the magnetic poles. Space storms could crash upper Midwest’s power grid 2016-09-13T04:00:00Z This year, Nasa researchers used the Hubble space telescope to capture images of Jupiter’s swirling auroras, powered by high-energy particles colliding with gas atoms at the planet’s intensely magnetic pole. New images of Jupiter offer glimpse into what lies under planet's skin 2016-09-02T04:00:00Z The vivid glows are created when charged particles enter the gas giant’s atmosphere near its magnetic poles; the collision with atoms and molecules in the atmosphere produce the light. Hubble is capturing stunning photos of Jupiter’s giant auroras 2016-06-30T04:00:00Z The Canadian patch is weakening, which means that it’s essentially losing a tug-of-war, causing the north magnetic pole to turn toward Siberia, while the south magnetic pole is standing relatively still. The North Pole’s mysterious journey across the Arctic 2019-02-04T05:00:00Z For the last 170 years, a mysteriously weak patch of Earth’s magnetic field has grown in size, causing some geologists to think that the planet is gearing up to flip its magnetic poles. What Ancient African Huts Reveal About Earth's Magnetic Flips 2018-03-05T05:00:00Z Auroras are created when “high energy particles enter a planet’s atmosphere near its magnetic poles and collide with atoms of gas,” explains NASA/ESA. Dramatic Auroras Light Up Jupiter's Poles 2016-06-30T04:00:00Z Williams’s vernacular free verse and Stevens’s sumptuous blank verse long remained magnetic poles of American poetic form. The Thrilling Mind of Wallace Stevens 2016-05-02T04:00:00Z The field on which modern politics takes place is more like a series of fixed magnetic poles of varying strengths, pulling people towards them and then repelling them. A Point of View: Why Donald Trump and Bernie Sanders aren't as revolutionary as they appear - BBC News 2016-02-12T05:00:00Z Distinct from the geographic North Pole, where all the lines of longitude meet at the top of the world, the magnetic pole is the point that a compass recognizes as north. The North Pole’s mysterious journey across the Arctic 2019-02-04T05:00:00Z The work will help geologists better understand how and why Earth’s magnetic poles occasionally reverse, and perhaps even aid predictions for when they will next make a flip. What Ancient African Huts Reveal About Earth's Magnetic Flips 2018-03-05T05:00:00Z I don’t think there’s anything about the trade winds or magnetic poles of the Southern Hemisphere that prevents it from producing genius. Can the Right Geographic Conditions Help Create Geniuses? In fact, along with Fromm, he’s one of the two magnetic poles of the tradition of interpersonal psychoanalysis in which I was trained and currently practice. A Commencement Speech For The Already Graduated: Be Courageous 2015-05-16T04:00:00Z The team will haul 60kg sleds with all their kit, players will trek 12 hours a day for six days, on a 100-mile trek from Resolute Bay to the magnetic pole. Adventurer ready for North Pole rugby 2015-04-13T04:00:00Z High-energy particles are funneled to the magnetic poles, where they create the dazzling displays known as the Northern or Southern Lights. Living With a Star 2015-02-04T05:00:00Z Known as the Aurora Borealis, it is caused by charged particles colliding in the earth's atmosphere and is seen above the northern magnetic pole. Spectacular views of Northern Lights 2014-12-24T05:00:00Z How and when Earth’s magnetic poles may flip. Transparent Rats, Rotting Pigs, a Smart Sock and More in Scientific American’s October Issue 2014-10-12T04:00:00Z The lights are more typically seen in northwest Canada, Alaska and Scandinavia, but sun flares this week are expected to affect the magnetic poles, bringing the lights south. Northern lights may put on show Friday, Saturday nights 2014-09-12T04:00:00Z The iron nanoparticles inside the tumor spin rapidly from the opposing magnetic poles of the MRI scan—think of what happens when you try to hold two repelling magnets next to each other. Magnetic Bacteria Could Help Destroy Tumors and Fight Cancer The old magnetic poles are still powerful, however. U.S. seeking calmer relationship with China, Kerry says Once every few hundred thousand years the magnetic poles flip so that a compass would point south instead of north. Earth's Magnetic Field Flip Could Happen Sooner Than Expected 2014-07-09T04:00:00Z “Jupiter’s strong magnetic field would probably channel that outflowing gas onto its magnetic poles.” Nearest Dying White Dwarfs Likely Still Harbor Planets 2014-01-29T23:07:00Z They occur in a doughnut-shaped area above the magnetic pole, with the best sightings traditionally viewed within that "doughnut" and away from artificial light and moonlight. UK expects to see Northern Lights 2014-01-09T17:42:23Z They're most visible near the Earth's magnetic poles where field lines are more concentrated. The secret life of the Sun 2013-07-05T14:33:58Z New research shows that the magnetic poles of the star reverse on timescales of one Earth year or less, so that the magnetic field cycles back to its original orientation within two years. Star Entangled with Its Giant Planet Experiences Hyperactive Magnetic Cycle 2013-07-04T15:15:00.613Z Its resulting cosmic ray waves would be funneled in along earth’s magnetic poles where magnetic resistance is the least, Eichler explains. Sun-Grazing Comets As The Trigger For Electromagnetic Armageddon 2012-11-30T12:49:34Z These reversals are captured by magnetically sensitive minerals, which preserve the way Earth's magnetic poles once pointed much like compasses. Did the Reign of Dinosaurs Begin, as Well as End, with a Meteorite Strike? 2012-09-17T16:15:00.223Z Also shot down was the quest for magnetic monopoles: theoretical particles with just one magnetic pole, which were the subject of Gran Sasso's first major experiment, a primarily Italian–US collaboration called MACRO. Gran Sasso: Chamber of physics 2012-05-23T21:50:23.633Z The "rotation of the tube" corresponds to the strength of the current, and sources and sinks to positive and negative magnetic poles. Lord Kelvin An account of his scientific life and work 2012-04-06T02:00:32.097Z In another form of discharger, combining the features before mentioned, the discharge was made to pass between two adjustable magnetic pole pieces, the space between them being kept at an elevated temperature. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Each human system has two magnetic poles—one positive and one negative. Health, Happiness, and Longevity Health without medicine: happiness without money: the result, longevity 2012-03-22T02:00:38.537Z From the sun's magnetic poles branch out the polar rays, nearly straight throughout their visible extent. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z On leaving the magnetic pole, in order to extend the field of search, Hobson was sent down the west coast of King William Land. True Tales of Arctic Heroism in the New World 2012-03-13T02:00:24.640Z The angle is gradually diminishing and the declination will in time again be 0�, when it will slowly increase in an easterly direction, the north magnetic pole oscillating slowly around the North Pole. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 10 "David, St" to "Demidov" 2012-02-17T03:00:33.923Z For similar reasons the currents in the armature-coils of the generator increase very rapidly when the speed of the armature is reduced when running in the same direction as the magnetic poles or conversely. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z In particular, the rocks retain a record of their paleolatitude, or how far they were from Earth's magnetic pole. Meet 'Amasia,' the Next Supercontinent 2012-02-08T20:33:41Z A north magnetic pole would then pass round it continually in the apparent direction of the sun, from east to west above, and from west to east below. Heroes of Science: Physicists 2012-01-17T03:00:17Z A man of Franklin's type did not let the squadron remain idle, and it is certain that the shores of Victoria and Boothia Peninsula were explored and the magnetic pole visited and definitely relocated. True Tales of Arctic Heroism in the New World 2012-03-13T02:00:24.640Z The planet’s magnetic poles could reverse, causing general mayhem and confusing the penguins. 2012 World Economic Forum Risks Are Released 2012-01-11T10:00:00Z Let it now be assumed that power is applied to the generator armature to turn it in a direction opposite to that in which its magnetic poles rotate. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z By the rules there framed for the observation of magnetical phenomena Hansteen hoped to accumulate analyses for determining the number and position of the magnetic poles of the earth. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 8 "Haller, Albrecht" to "Harmonium" 2012-01-02T03:00:22.443Z On releasing the bar it fell so as to strike the magnetic poles and close the circuit of the magnet. Heroes of Science: Physicists 2012-01-17T03:00:17Z He reached the magnetic pole without seeing any one, his dogs in such fearful plight that he could advance but one day farther. True Tales of Arctic Heroism in the New World 2012-03-13T02:00:24.640Z Record-keeping is necessary because the magnetic poles move about, thanks to the complex circulation of Earth's fluid outer core. Journey Under Way to Measure Movement of Magnetic South Pole 2011-12-28T22:15:17.663Z A description is given elsewhere of a method of operating alternating current motors by first rotating their magnetic poles until they have attained synchronous speed, and then alternating the poles. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z Generally, if constrained to move in any other plane, the axis seeks the position nearest to the polar axis, like a dipping needle with respect to the magnetic pole. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" 2011-12-26T03:00:11.613Z Further examination showed that the glass was repelled by the magnetic poles. Heroes of Science: Physicists 2012-01-17T03:00:17Z Magnets have two opposite kinds of magnetism or magnetic poles, which attract or repel each other in much the same way as would two opposite kinds of electrification.106 Ques. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z While this journey to the southward was in progress, another party of the expedition climbed Mount Erebus, and a third party reached the south magnetic pole and located it, in 72 deg. South Pole Discovered, December 14, 1911 2011-12-15T00:45:00.480Z In practice the presence of slight currents is observed, the existence of which is attributable to more or less pronounced fluctuations in the intensity of the magnetic poles of the generator ring. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z To commence with, it points, not to the geographical north, but to the "magnetic pole," a point some distance from the geographical pole, and one, moreover, which is not quite permanent. Marvels of Scientific Invention An Interesting Account in Non-technical Language of the Invention of Guns, Torpedoes, Submarine Mines, Up-to-date Smelting, Freezing, Colour Photography, and many other recent Discoveries of Science 2011-11-19T03:00:24.517Z Faraday's discovery of the rotation of a wire around a magnetic pole laid the foundation for a great variety of electro-motors, in some of which the efficiency has attained a very high standard. Heroes of Science: Physicists 2012-01-17T03:00:17Z Like magnetic poles repel one another; unlike magnetic poles attract one another. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z Both tracks are roughly concentric with the corresponding magnetic poles, a fact which may be important in connection with the hypothesis of an electrical effect of the sun upon terrestrial storminess. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z The north magnetic pole, he says, makes a complete revolution in 426 years, 77 days, 9 hours, and the south pole in about 5459 years. Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry 2011-10-11T02:01:05.817Z The housings have been put over the ship already, as Hobson will leave us again in a few days to advance his depôt and my own to the vicinity of the magnetic pole if possible. In the Arctic Seas A Narrative of the Discovery of the Fate of Sir John Franklin and his Companions 2011-10-10T02:00:18.377Z Electrical Inventions William Gilbert, England, 1540-1603, called "the father of magnetic philosophy," first to use the terms "electric force," "electric attraction," "magnetic pole." The Story of Great Inventions 2011-10-05T02:00:16.353Z The force exerted between two magnetic poles varies inversely as the square of the distance between them. Hawkins Electrical Guide, Number One Questions, Answers, & Illustrations, A Progressive Course of Study for Engineers, Electricians, Students and Those Desiring to acquire a Working Knowledge of Electricity and its Applications 2011-12-24T03:07:54.823Z The magnetic poles are known to wander considerably. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z The little bungalow of the Colvilles in Pasadena became a kind of magnetic pole. Edgar Saltus: The Man 2011-09-13T02:00:36.953Z My object is to communicate with the Boothians in the vicinity of the magnetic pole. In the Arctic Seas A Narrative of the Discovery of the Fate of Sir John Franklin and his Companions 2011-10-10T02:00:18.377Z The antiparticles appear to form a thin belt around Earth, gyrating around Earth's magnetic field lines and bouncing back and forth between the planet's north and south magnetic poles, the team notes. Antimatter Belt Found Circling Earth 2011-08-09T20:55:14Z We may remark, however, that although the fact of the tangential force between an electric current and a magnetic pole was clearly stated by Oersted, and clearly apprehended by A.M. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 2 "Fairbanks, Erastus" to "Fens" 2011-06-19T02:00:16.580Z The solar deflection may cause their effects to be greatest when the spots are near the sun's margin; the terrestrial deflection may cause concentration in bands roughly concentric with the magnetic poles of the earth. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z It is said the smallest magnet can more easily than Newton or Leibnitz discover the magnetic pole, and the swallow has more knowledge of the varieties of latitude than had Columbus or Magellan. The Universe a Vast Electric Organism 2011-06-09T02:00:22.450Z On the first of March we halted to encamp at about the position of the magnetic pole—for no cairn remains to mark the spot. In the Arctic Seas A Narrative of the Discovery of the Fate of Sir John Franklin and his Companions 2011-10-10T02:00:18.377Z It is based around the two magnetic poles, located near the North and South Poles. Find Magnetic North with a Homemade Compass 2011-05-23T12:15:00.233Z But when contrary magnetic poles were on the same side there was an effect produced on the polarized ray, and thus magnetic force and light were proved to have relations to each other. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 2 "Fairbanks, Erastus" to "Fens" 2011-06-19T02:00:16.580Z It has, in fact, two poles—a north and a south magnetic pole—which are not very far from the geographical poles. The New Gresham Encyclopedia Volume 4, Part 1: Deposition to Eberswalde 2011-04-14T02:00:57.977Z They were over the true magnetic pole, and north was south; only the sense of direction told Stirling the course to steer, but he held on grimly, with his jaw set to a block. The Ice Pilot 2011-03-09T03:00:48.433Z Seven or eight snow-huts, recently abandoned, were found near the magnetic pole. In the Arctic Seas A Narrative of the Discovery of the Fate of Sir John Franklin and his Companions 2011-10-10T02:00:18.377Z Compasses might seem complicated, and the magnetic poles of the Earth might seem very far away. Find Magnetic North with a Homemade Compass 2011-05-23T12:15:00.233Z There is a profound similarity between Newton's law of universal gravity and the laws that govern the interactions of electric charges and magnetic poles. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z This varies from 90� at the magnetic poles to 0� at the magnetic equator. The New Gresham Encyclopedia Volume 4, Part 1: Deposition to Eberswalde 2011-04-14T02:00:57.977Z If then we carry a unit magnetic pole against the direction in which it would naturally move we do work. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z In fact, there is an area in Asia, where the compass needle is deflected and points to a smaller local magnetic pole. Woodcraft 2010-12-30T03:00:30.337Z Every half hour the station sent out signals, and gave directions, because up north there, so near the magnetic pole, a regular compass is thrown way off. Famous Flyers And Their Famous Flights 2010-12-25T03:00:15.953Z Here he made his headquarters, and by numerous excursions was able to prove that the north magnetic pole has no stationary position, but is in continual movement. The New Gresham Encyclopedia. Vol. 1 Part 2 Amiel to Atrauli The value of the horizontal component is zero at the north magnetic pole, and increases toward the magnetic equator. On the magnet, magnetick bodies also, and on the great magnet the earth a new physiology, demonstrated by many arguments & experiments This proves that the force on each magnetic pole is inversely as its distance from the current. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z It does not point directly towards the magnetic pole in all parts of the world, for the magnetic currents which converge there do not flow in straight lines. Woodcraft 2010-12-30T03:00:30.337Z The “magnetic pole,” where the needle hangs vertically, has been found in the Arctic archipelago north of America, and in many ways scientific observations there are worth more than at the North Pole itself. McClure's Magazine, Vol. 1, No. 2, July, 1893 He then planned an expedition to the area of the north magnetic pole and a north-west passage by water. The New Gresham Encyclopedia. Vol. 1 Part 2 Amiel to Atrauli One of these expeditions led to the discovery of the north magnetic pole, or that point where the dipping-needle assumes a vertical position. Harper's New Monthly Magazine, No. V, October, 1850, Volume I. The work done in carrying a unit magnetic pole once round a circuit conveying a current is called the “line integral of magnetic force” along that path. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z Thus, at Melville Island, they are almost all westerly and north-westerly, for there the remnant of the counter-trade is passing west around the magnetic pole. The Philosophy of the Weather And a Guide to Its Changes In 1891 he made observations of the East Greenland currents, and two years later he gave nineteen months to observations connected with the magnetic pole. The Complete Club Book for Women Including Subjects, Material and References for Study Programs; together with a Constitution and By-Laws; Rules of Order; Instructions how to make a Year Book; Suggestions for Practical Community Work; a Resume of what Some Clubs are Doing, etc., etc. In his studies Druga had learned that just as the world has a North and South magnetic pole, so does the universe have opposite poles of life-magnetic-energy. Daughter of the Night Over the N. magnetic pole the north-seeking end of the needle points directly downwards and dips at an intermediate angle at intermediate distances between the magnetic poles and equator. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5 "Dinard" to "Dodsworth" Since the action is reciprocal a current free to move tends to revolve round a magnetic pole. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z The line of magnetic intensity, which connects our magnetic pole with its opposite, is now upon this continent nearly a N. W. and S. E. line, and the pole is fast traveling to the west. The Philosophy of the Weather And a Guide to Its Changes These cannot resist the drag of the magnetic pole, any more than you and I who have souls and are feeling folk! Seeds of Pine I think that one need not expect that the achievements of man in Australia, or in South America, will rival the achievements of man nearer the magnetic pole of the earth. Under the Maples The diamagnetic quality of this metal can be detected by means of a good permanent magnet, and its repulsion by a magnetic pole had been more than once recognized before the date of Faraday's experiments. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter" Since a magnetic pole tends to move along a line of magnetic force it was obvious that it should revolve round a wire conveying a current. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z It has its magnetic poles, and they are distinct from its geographical ones; and there are two in each hemisphere. The Philosophy of the Weather And a Guide to Its Changes We have positive and negative electrical charges, positive and negative, or north and south, magnetic poles. Astounding Stories of Super-Science, March 1930 Hatteras stood forward, with his eyes turned to the mysterious point, which attracted him with an irresistible power, as the magnetic pole attracts the needle. The Voyages and Adventures of Captain Hatteras He had had such revulsions before, and each time he had swung as surely back to his purpose as does the disturbed needle to the magnetic pole. Counsel for the Defense He had not moved, except to turn his head again in the direction of the light—a dumb instinct like to the compass-needle that seeks the magnetic pole. The Doomsman The foregoing diagram shows the situation of our magnetic pole and line of no variation, the dip of the needle by the arrows, and the magnetic equator. The Philosophy of the Weather And a Guide to Its Changes In other words, the North and South magnetic poles, running through the center of the earth, do not point true North and South. Lectures in Navigation "This is exactly the magnetic pole of the earth!" he cried, stamping on the ground. The Voyages and Adventures of Captain Hatteras He is trying to get himself north and south, so as to bring the body into harmony with the magnetic poles of the earth. The Faith Doctor A Story of New York Magnetic observations were now taken, pointing to the conclusion that the magnetic pole had been passed on the north. Celebrated Travels and Travellers Part III. The Great Explorers of the Nineteenth Century Doubtless such lines of force exist around the earth and the magnetic poles. The Philosophy of the Weather And a Guide to Its Changes Thou true magnetic pole, to which all hearts point duly north, like trembling needles!—Byron. Pearls of Thought A balanced needle, highly magnetized, which points to the magnetic pole, when not influenced by the local attraction of neighbouring iron. The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. The magnetic poles of the earth do not always occupy the same place in relation to the geographical poles, so that the magnetic force varies as regards intensity or magnitude. Aether and Gravitation The officers had collected sufficient information in these latitudes to determine the position of the southern magnetic pole, but the results obtained by them did not accord with those given by Duperrey, Wilkes, and Ross. Celebrated Travels and Travellers Part III. The Great Explorers of the Nineteenth Century It was while thus instructing himself that he succeeded in causing a wire, carrying an electric current, to rotate round a magnetic pole. Fragments of science, V. 1-2 So completely had her heart changed its magnetic pole. The Dew of Their Youth To observe the deviations and to locate the south magnetic pole have been the chief objects of south polar expeditions for several years, geographical information being of secondary importance. Wealth of the World's Waste Places and Oceania How does a current act on a magnetic pole? Aether and Gravitation Entrusted with the taking of scientific observations, he had discovered the north magnetic pole, and he had also made a good many excursions across the ice on foot and in sledges. Celebrated Travels and Travellers Part III. The Great Explorers of the Nineteenth Century Manual dexterity in illustrating the interaction of magnetic poles is of the utmost importance at this stage of your progress; and you must not neglect attaining this power over your implements. Fragments of science, V. 1-2 The coast was dreary in the extreme, while the irregularity of the compass showed that they were approaching the magnetic pole, and increased the difficulties of navigation. Notable Voyagers From Columbus to Nordenskiold It must be borne in mind that the north pole of the earth and the north magnetic pole are two entirely different points. Wealth of the World's Waste Places and Oceania De Morgan's reference is to Ross's discovery of the magnetic pole on June 1, 1831. A Budget of Paradoxes, Volume I He, therefore, skirted along the eastern beach, forcing a passage in a southerly direction beyond the magnetic pole, which he places near S. lat. Celebrated Travels and Travellers Part III. The Great Explorers of the Nineteenth Century One magnetic pole acts upon another through these bodies as if they were not present. Fragments of science, V. 1-2 The earth has North and South magnetic poles. Electricity for Boys In the interval of nearly seventy years, it is safe to assume that the position of the south magnetic pole has shifted forty miles. Wealth of the World's Waste Places and Oceania "Here is the exact spot of the world's magnetic pole," said the doctor, rapping the earth. The English at the North Pole Part I of the Adventures of Captain Hatteras For, after all, what is it to humanity that the magnetic pole, north or south, is a few degrees east or west of a certain point in the frozen seas and barren ice mountains? Masterpieces of Negro Eloquence The Best Speeches Delivered by the Negro from the days of Slavery to the Present Time If we sail north one end of the needle dips; if we sail south the opposite end dips; and over the north or south terrestrial magnetic pole the needle sets vertical. Fragments of science, V. 1-2 The south pole of a magnetic needle is attracted so it points to the north magnetic pole; and the north pole of the needle is attracted to point to the south magnetic pole. Electricity for Boys Except in a few localities the compass needle does not point due north and south—that is, toward the real poles of the earth, but toward the magnetic poles. Wealth of the World's Waste Places and Oceania At the magnetic equator there is no dip at all, because the needle being equally distant from the north and south magnetic poles, remains horizontal. The Giant of the North Pokings Round the Pole Instead of a single magnetic pole there is a conflict of forces. The Measurement of Intelligence An Explanation of and a Complete Guide for the Use of the Stanford Revision and Extension of the Binet-Simon Intelligence Scale The south magnetic pole has not yet been found, but Sir James Ross discovered the north magnetic pole on June 1, 1831. Fragments of science, V. 1-2 Horseshoe Magnet The north magnetic pole does not coincide with the true north pole or the pivotal point of the earth's rotation, but it is sufficiently near for all practical purposes. Electricity for Boys And these magnetic poles are ever shifting, as is shown by the changing direction of the compass needle, which year by year increases or decreases its deviation from true north and south. Wealth of the World's Waste Places and Oceania There are two magnetic poles just as there are two geographical poles, one in the southern hemisphere, the other in the northern. The Giant of the North Pokings Round the Pole "What I cannot understand is why the magnetic poles should be at the north pole and at the south pole." The Wonder Island Boys: The Mysteries of the Caverns The terrestrial magnetic poles do not coincide with the geographical ones; nor does the earth's magnetic equator quite coincide with the geographical equator. Fragments of science, V. 1-2 Ross, in the expedition of 1829, made out the earth's north magnetic pole to be in 70° north latitude, farther west, in the upper part of Hudson Bay. Left on Labrador or, The cruise of the Schooner-yacht 'Curlew.' as Recorded by 'Wash.' Unless the magnetic pole had changed its position, and the whole earth gone askew, they were tramping northward, as he saw to his unutterable amazement. Tom Slade with the Boys Over There As you travel north the needle dips more and more until it reaches the region of the north magnetic pole when it is almost perpendicular—pointing straight down. The Giant of the North Pokings Round the Pole If a bar of iron be brought up, end on, near a magnetic pole, the bar becomes an induced magnet, but an induced magnet quite different from what our elementary treatises seem to predict. Scientific American, Volume 40, No. 13, March 29, 1879 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures If we could divest ourselves of this prejudice, we should have a ready solution of the difficulty presented by the earth having two north magnetic poles, and probably two also in the south. Outlines of a Mechanical Theory of Storms Containing the True Law of Lunar Influence "Of course this magnetic pole that Ross found in 70° is not the bona fide north pole of the earth," Wade observed. Left on Labrador or, The cruise of the Schooner-yacht 'Curlew.' as Recorded by 'Wash.' The appearance takes place equally round both magnetic poles. The Girl's Own Paper, Vol. VIII, No. 355, October 16, 1886 In fact we have got considerably to the north of the magnetic pole. The Giant of the North Pokings Round the Pole It is divided into six equal sections by six small blocks which project from the inner face of the ring, and which act as so many magnetic poles. Scientific American Supplement, No. 315, January 14, 1882 Let us assume, for argument’s sake, that the magnetic poles of the earth correspond to the poles of rotation, the parallels of latitude will, therefore, represent the ethereal currents circulating around the globe. Outlines of a Mechanical Theory of Storms Containing the True Law of Lunar Influence The nearer we get up to the north magnetic pole of the earth, the more the pole of our needle is pulled down toward it. Left on Labrador or, The cruise of the Schooner-yacht 'Curlew.' as Recorded by 'Wash.' At all events, the corona forms itself round the magnetic poles, and its lines correspond to the earth's magnetic field. The Girl's Own Paper, Vol. VIII, No. 355, October 16, 1886 “What! have you been so long at sea with me and never heard yet about the magnetic pole?” The Giant of the North Pokings Round the Pole To the attractive and repulsive action of the magnetic poles has to be added the reciprocal action of the coils around the two rings, the action of which is similar. Scientific American Supplement, No. 315, January 14, 1882 Now, this is precisely the direction of the deviation of the magnetic meridian, the needle therefore only follows the meridian, or still continues to point to the temporary magnetic pole. Outlines of a Mechanical Theory of Storms Containing the True Law of Lunar Influence "It is found that this dip of the needle, or, in other words, the position of the magnetic poles, varies with the amount of heat which the earth receives from the sun," remarked Raed. Left on Labrador or, The cruise of the Schooner-yacht 'Curlew.' as Recorded by 'Wash.' It is somehow connected with the magnetic poles of the earth; and generally appears in form of a luminous arch, from east to west, but never from north to south. A Catechism of Familiar Things; Their History, and the Events Which Led to Their Discovery. With a Short Explanation of Some of the Principal Natural Phenomena. For the Use of Schools and Families. Enlarged and Revised Edition. With regard to one of us, I know that this north-west passage to my magnetic pole had been long discovered by some sages, and I leave them the full benefit of their penetration. Life of Lord Byron, Vol. 5 With His Letters and Journals There is an influence akin to that of the magnetic pole, only it draws everything. Charred Wood The Aurora Borealis has been generally considered to be in some way connected with the magnetism of the earth, and with the position of the magnetic pole. Outlines of a Mechanical Theory of Storms Containing the True Law of Lunar Influence It is, of course, hardly necessary to say that the needles pointed in no particular direction, the magnetic pole of the Earth being unable at such a distance to exercise any appreciable influence on them. All Around the Moon It is as if you were to remove the magnetic pole because it was in the way of a German cruiser. New York Times Current History: The European War from the Beginning to March 1915, Vol 1, No. 2 Who Began the War, and Why? One or other became the southernmost waypoint, the magnetic pole destination being used at the discretion of the pilot if weather conditions made the McMurdo area unsuitable for sightseeing. Judgments of the Court of Appeal of New Zealand on Proceedings to Review Aspects of the Report of the Royal Commission of Inquiry into the Mount Erebus Aircraft Disaster C.A. 95/81 I have then moved powerful magnetic poles, about this arrangement, in various directions, the metallic circuit on the outside being sometimes completed by wires, and sometimes broken. Experimental Researches in Electricity, Volume 1 When it is stated that Auroras diminish with the decrease of latitude, the latitude must be understood to be magnetic, and as measured by its distance from the magnetic pole. COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 This irregularity became more and more obvious as we now advanced to the southward, which rendered it not improbable that we were making a very near approach to the magnetic pole. Three Voyages for the Discovery of a Northwest Passage from the Atlantic to the Pacific, and Narrative of an Attempt to Reach the North Pole, Volume 1 In fact, at the distance the projectile was from the earth the magnetic pole could not exercise any sensible action upon the apparatus. The Moon-Voyage She had the power that caused the reader to lose himself in the charm of magnetic poles, and ball bearings, and high-tension sparks. Personality Plus Some Experiences of Emma McChesney and Her Son, Jock If a single wire be moved like the spoke of a wheel near a magnetic pole, a current of electricity is determined through it from one end towards the other. Experimental Researches in Electricity, Volume 1 In the northern latitudes, p 196 in the immediate vicinity of the magnetic pole, the smoke-like conical segment appears less dark, and sometimes is not even seen. COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 Boothia, a peninsula of British N. America, W. of the Gulf of Boothia, and in which the N. magnetic pole of the earth is situated; discovered by Sir John Boss in 1830. The Nuttall Encyclopædia Being a Concise and Comprehensive Dictionary of General Knowledge This state of affairs tended always to throw him back on the mother as his most satisfactory source of inspiration and the magnetic pole of his emotional compass. The Soul of a Child They are light, lie in long ranges, apparently in the direction of the magnetic pole, and are generally curled up at one extremity. The Atlantic Monthly, Volume 06, No. 33, July, 1860 On placing opposite magnetic poles near to, and on each side of, the same place, the vibrations were reduced to fifteen. Experimental Researches in Electricity, Volume 1 Development of light at the magnetic poles; terrestrial light as a consequence of the electro-magnetic activity of our planet. COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 Still, we recommend the fellows to keep out of their after-dinner conversations, all such topics as the course of the Niger, or the position of a new magnetic pole. The Mirror of Literature, Amusement, and Instruction Volume 14, No. 398, November 14, 1829 Indeed, at the distance they were from the earth, the magnetic pole could have no perceptible action upon the apparatus; but the box placed on the lunar disc might perhaps exhibit some strange phenomena. From the Earth to the Moon; and, Round the Moon It is as if the magnetic poles were south-west and north-east, for our spirits, with the south-west, under the sunset, as the positive pole. Twilight in Italy As the helix with its iron cylinder was brought towards the magnetic poles, but without making contact, still powerful effects were produced. Experimental Researches in Electricity, Volume 1 The proportion of nights in which the aurora is seen is much greater the nearer we are to the magnetic pole. The Atlantic Monthly, Volume 04, No. 26, December, 1859 The armature, for instance, must not give way to the centrifugal forces imposed upon it, nor should the field magnets be so flexible as to yield to the statical pull of the magnetic poles. Scientific American Supplement, No. 430, March 29, 1884 In recording the bearings allowance must in all cases be made for the magnetic pole. The Sewerage of Sea Coast Towns This explains everything--the singular changes in the tides and in the direction of the magnetic pole, decreased gravitation and all the other strange things we noticed, but couldn't understand. Darkness and Dawn Single wires, approximated in certain directions towards the magnetic pole, had currents induced in them. Experimental Researches in Electricity, Volume 1 The crepitation is the result of the action of a powerful magnetic pole upon luminous electric jets in its immediate neighborhood. The Atlantic Monthly, Volume 04, No. 26, December, 1859 We may suspect this frequency to have been connected with the greater cold indicated, and perhaps with a different position of the magnetic pole. The Travels of Marco Polo — Volume 1 Was it, then, the proximity of the magnetic pole that produced such effects? An Antarctic Mystery Especially would this be the case with their magnetical observations, as they were right upon the magnetic pole. Schwatka's Search No other known power has like direction with that exerted between an electric current and a magnetic pole; it is tangential, while all other forces, acting at a distance, are direct. Experimental Researches in Electricity, Volume 1 When we take a piece of soft iron and continuously revolve it in front of a permanent magnet, the magnetic poles of the soft iron piece will keep changing their position at each half revolution. Marvels of Modern Science The nearer the magnetic poles the more nearly vertical does the freely suspended needle become. The Home of the Blizzard Being the Story of the Australasian Antarctic Expedition, 1911-1914 Our compass could not have enabled us to determine whether the marvel before our eyes really was at the magnetic pole of the southern regions. An Antarctic Mystery The south magnetic pole lies in the Prince Albert range of Victona Land, and was almost reached by Sir James Clark Ross. The Story of Electricity So also when the two conductors were equidistant from the magnetic poles, as in fig. Experimental Researches in Electricity, Volume 1 There is a corresponding magnetic pole in the Antarctic Ocean, or rather on Victoria Land, nearly south of Australia. Side-Lights on Astronomy and Kindred Fields of Popular Science On approaching the magnetic poles, compasses become sluggish, for the horizontal deflecting force falls off rapidly. The Home of the Blizzard Being the Story of the Australasian Antarctic Expedition, 1911-1914 The magnetic pole, still hundreds of miles off, had no influence on the compass, its direction bcing east. An Antarctic Mystery When the currents are similar the lines act as unlike magnetic poles and attract, but when the currents are dissimilar the lines act as like magnetic poles and repel each other. The Story of Electricity The currents in the plate are therefore from the centre by the magnetic poles towards the circumference. Experimental Researches in Electricity, Volume 1 In this way it is found that, as a general rule, the magnetic force is least in the earth's equatorial regions and increases as we approach either of the magnetic poles. Side-Lights on Astronomy and Kindred Fields of Popular Science Its inclination was such that at one time Robur felt certain they were passing over the magnetic pole discovered by Sir James Ross. Robur the Conqueror "Would you then conclude," I said, "that the magnetic pole is somewhere between the surface of the globe and the point where we are?" A Journey to the Interior of the Earth It follows that the magnetic pole of the compass needle which turns to the north must be unlike the north and like the south magnetic pole of the earth. The Story of Electricity It appeared to be equally powerful at equal distances from the place of the magnetic poles, not being affected in that respect by the direction of the rotation. Experimental Researches in Electricity, Volume 1 The magnetic poles used to be looked upon as the points towards which the respective ends of the needle were attracted. Side-Lights on Astronomy and Kindred Fields of Popular Science Sir James Ross claimed to have discovered the magnetic pole at about seventy-four degrees latitude. The Smoky God, or, a voyage to the inner world The deranged needles would mark contradictory directions as we approached the southern magnetic pole, which doesn't coincide with the South Pole proper. Twenty Thousand Leagues Under the Sea And it is to be doubted if Cutty himself realized that there was a true magnetic pole in this cubbyhole of a room. The Drums of Jeopardy Copper, iron, tin, zinc, lead, mercury, and all the metals tried, produced electrical currents when passed between the magnetic poles: the mercury was put into a glass tube for the purpose. Experimental Researches in Electricity, Volume 1 All these arrangements being made, the copper disk was adjusted, the small magnetic poles being about one-half an inch apart, and the edge of the plate inserted about half their width between them. A History of Science — Volume 3 This is wrong—the magnetic pole is exactly one-half the distance through the earth's crust. The Smoky God, or, a voyage to the inner world In the first place, the needle does not point to the North Pole at all, but to the magnetic pole. Where the Blue Begins He proved that the direction of the rotation depends upon the polarity of his magnet; being reversed when the magnetic poles are reversed. Faraday as a Discoverer When the magnetic poles were in contact, and the copper plate was drawn between the conductors near to the place, there was but very little effect produced. Experimental Researches in Electricity, Volume 1 |
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