| 单词 | background radiation |
| 例句 | Then when the engineers heard of the Princeton group’s work, they realized that they had found the cosmic background radiation. Zero: The Biography of a Dangerous Idea 2000-02-07T00:00:00Z The remnants of that fireball, the cosmic background radiation, emanating from all parts of the sky can be detected by radio telescopes today. Cosmos 1980-01-01T00:00:00Z In detecting the cosmic background radiation, in counting quasars, in searching for intelligent signals from space, radio astronomers are dealing with amounts of energy that are barely there at all. Cosmos 1980-01-01T00:00:00Z This is consistent with the observations of the microwave background radiation, which show that it has almost exactly the same intensity in any direction. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z For last year’s experiment, he had compared the background radiation around the mobile home with the background radiation in the Phoenix valley. Healer of the Water Monster 2021-05-11T00:00:00Z He turned around and saw his science project on background radiation and the golden first-place trophy for his category. Healer of the Water Monster 2021-05-11T00:00:00Z In particular, why is the temperature of the microwave background radiation so nearly the same when we look in different directions? A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z Phoenix had twice the amount of background radiation. Healer of the Water Monster 2021-05-11T00:00:00Z However, I and several other people showed that, at least in its original form, it predicted much greater variations in the temperature of the microwave background radiation than are observed. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z Incidentally, disturbance from cosmic background radiation is something we have all experienced. A Short History of Nearly Everything 2003-05-06T00:00:00Z But the background radiation, when examined to finer precision, proves to be imperfectly symmetrical. Cosmos 1980-01-01T00:00:00Z This cosmic background radiation was the afterglow of the big bang. Zero: The Biography of a Dangerous Idea 2000-02-07T00:00:00Z Yet that’s less than the background radiation in many populated areas. Looking Again at the Chernobyl Disaster 2019-04-03T04:00:00Z You measure the background radiation and if it's 47 or something it should be OK. Lustmord: ambient's dark star 2013-03-16T03:08:20Z The two methods -- the supernova method and the background radiation method -- always gave slightly different results. Colliding neutron stars provide a new way to measure the expansion of the Universe 2023-10-02T04:00:00Z “A hundred million humans will be emitting a hundred-million worth of human background radiation, but there will be a hundred million people absorbing this radiation.” NOT REAL NEWS: A look at what didn’t happen this week 2023-03-17T04:00:00Z They were, however, without the scientific fascination that has driven space exploration since the discovery in 1965 that the universe is permeated with background radiation. Opinion | The Webb Space Telescope is telling humanity the history of everything 2023-01-28T05:00:00Z Humans evolved in conditions of plentiful gravity and relatively slight background radiation, he said. The many, many reasons space travel is bad for the human body “Monitoring of background radiation, which is carried out near the nuclear plant, indicates an increase in the level of radiation,” Ukraine’s military intelligence office said in a statement. Foes Agree on Nuclear Disaster Risk in Ukraine, but Little Else 2022-08-23T04:00:00Z The result is a Hubble constant closer to the background radiation method, but whether the kilonova method can resolve the Hubble trouble, the researchers do not yet dare to state: Colliding neutron stars provide a new way to measure the expansion of the Universe 2023-10-02T04:00:00Z As noted earlier, Penzias and Wilson detected microwaves to identify the background radiation originating from the Big Bang. College Physics for AP Courses 2015-08-12T00:00:00Z We are constantly exposed to background radiation from a variety of natural sources, including cosmic radiation, rocks, medical procedures, consumer products, and even our own atoms. Chemistry 2019-02-14T00:00:00Z These two scientists are standing in front of the horn-shaped antenna with which they discovered the cosmic background radiation. Astronomy 2016-10-13T00:00:00Z Another strong indication of the big-bang is cosmic microwave background radiation. An Introduction to Geology 2017-01-01T00:00:00Z This method is complemented by another method that analyzes irregularities in the so-called cosmic background radiation; an ancient form of light dating back to shortly after the Big Bang. Colliding neutron stars provide a new way to measure the expansion of the Universe 2023-10-02T04:00:00Z Table 32.5 lists average annual background radiation doses from natural and artificial sources for Australia, the United States, Germany, and world-wide averages. College Physics for AP Courses 2015-08-12T00:00:00Z The xenon itself helps shield the heart of the tank, greatly reducing background radiation there. Dark matter hunt heats up with first result from world’s biggest detector 2022-07-06T04:00:00Z However, nothing the scientists did could reduce the background radiation to zero, and they reluctantly came to accept that it must be real, and it must be coming from space. Astronomy 2016-10-13T00:00:00Z All buried sediments are exposed to radiation from normal background radiation from the decay process described above. An Introduction to Geology 2017-01-01T00:00:00Z The equipment appears to be working to filter out most of the background radiation they hoped to block. Huge underground search for mysterious dark matter begins 2022-07-07T04:00:00Z Naturally occurring 40 K is listed as responsible for 16 mrem/y of background radiation. College Physics for AP Courses 2015-08-12T00:00:00Z And because so few experiments have probed this mass range, even little prototype detectors unshielded from background radiation can yield interesting data, Pyle says. To crack the mystery of dark matter, physicists turn to supersensitive quantum sensors 2022-04-27T04:00:00Z The background radiation in most of the 18-mile exclusion zone around the nuclear plant, after 36 years, poses scant risks and is about equivalent to a high-altitude airplane flight. Russian blunders in Chernobyl: ‘They came and did whatever they wanted’ 2022-04-08T04:00:00Z According to the president’s office, there has been no change in the background radiation. Russia-Ukraine war: Key things to know about the conflict 2022-03-10T05:00:00Z He described it as “like a thermos” made of “perhaps the purest titanium in the world” designed to keep the liquid xenon cold and keep background radiation at a minimum. Huge underground search for mysterious dark matter begins 2022-07-07T04:00:00Z Cosmic rays are a component of background radiation; consequently, they give a higher radiation dose at the poles than at the equator. College Physics for AP Courses 2015-08-12T00:00:00Z To disprove this, Loeb and his fellow researchers calculated how cosmic rays — background radiation that constantly permeates empty space — would have slowly caused such an "iceberg" to evaporate over millions of years of travel. Snowball fight: Astronomers argue over whether 'Oumuamua was a spacecraft or a chunk of ice 2021-09-15T04:00:00Z The science cases behind upgrading the IceCube Neutrino Observatory at the South Pole and building a next-generation detector for the cosmic microwave background radiation are similarly compelling. Fate of giant telescopes in the balance as U.S. astronomers debate priorities 2021-08-31T04:00:00Z They remain off-limits because annual radiation doses remain at more than 50 millisieverts—more than 10 times the typical annual background radiation. This physician has studied the Fukushima disaster for a decade—and found a surprising health threat 2021-03-04T05:00:00Z Anti-Semitism, white supremacy, racism and racial resentment, white privilege and Christian Nationalism were shared cultural assumptions that functioned almost as background radiation. CPAC 2021: A school for indoctrinating and radicalizing right-wing extremists 2021-03-04T05:00:00Z Greenland Minerals says any increase in background radiation from its Kvanefjeld mine will be minimal. Mining magnets: Arctic island finds green power can be a curse 2021-03-02T05:00:00Z They found fewer mammals in areas with higher background radiation. Chernobyl ‘Exclusion Zone’ Radiation Doses Reanalyzed 2020-12-29T05:00:00Z The twin-engine Bell 412 helicopter is equipped with sensitive, state of the art passive radiation sensing technology that will be used to measure naturally occurring background radiation. Nuclear search team helicopters to fly over D.C. in preparation for presidential inauguration 2020-10-19T04:00:00Z Analysis of the cosmic microwave background radiation—the fading afterglow of the big bang discovered in the late 1960s—indicated that the universe erupted into existence in an astonishingly uniform state. In Memoriam: John D. Barrow 2020-10-10T04:00:00Z A portion of the new map of the Universe's cosmic microwave background radiation, representing a region of space 20 billion light-years across.Credit: Mystery over Universe’s expansion deepens with fresh data 2020-07-14T04:00:00Z That means, Martens said, that there’s about a 2 in 10,000 chance that random background radiation produced the signal as opposed to solar axions themselves. Physicists Announce Potential Dark Matter Breakthrough 2020-06-17T04:00:00Z But all detectors, no matter how well-shielded, experience noise from sources such as background radiation. Direct Proof of Dark Matter May Lurk at Low-Energy Frontiers 2020-06-09T04:00:00Z Hoyle stopped promoting the steady-state theory after the discovery of the microwave background radiation in the early 1960's seemed to provide conclusive evidence for the big bang. Remembering Big Bang Basher Fred Hoyle 2020-04-11T04:00:00Z They are stories about the background radiation of our rapacious economy, one in which customer and corporate desperation unwittingly amplify each other, accelerating the mutual distrust. Perspective | Air travel shows what happens when we give companies ruinous power over us 2019-11-26T05:00:00Z He could stay for only six months before he’s required to leave for a spell, in order to minimize his exposure to the island’s background radiation. 15 months, 5 trips, a gut-wrenching sight: How we reported the Marshall Islands story 2019-11-10T05:00:00Z A surfeit of gravitational lensing events — caused by massive objects bending light — exceeded what was expected, and was affecting the cosmic microwave background radiation, according to the study. Astronomers think the universe is a sphere. Here's why that claim is so controversial 2019-11-05T05:00:00Z One widely supported estimate of the cosmic expansion uses the background radiation that permeates space — light emitted when the universe was young. Scientists are baffled: What’s up with the universe? 2019-10-31T04:00:00Z Dr. Peebles and his colleagues had predicted this background radiation, a residue from about 400,000 years after the Big Bang, when the universe had cooled enough for hydrogen and helium atoms to form. Nobel Prize in Physics Awarded for Studies of Earth’s Place in the Universe 2019-10-08T04:00:00Z Arno A. Penzias and Robert W. Wilson identified the signal as the cosmic background radiation. The Evolution of the Universe 2019-10-08T04:00:00Z Peebles helped predict the cosmic microwave background radiation—the first light in the universe, which allows scientists to trace the earliest epochs in the cosmos. Cosmology and Exoplanets Win 2019 Nobel Prize in Physics 2019-10-08T04:00:00Z By contrast, natural background radiation – from thorium and uranium in rocks and other sources – is much, much higher. ‘Perhaps the most important isotope’: how carbon-14 revolutionised science 2019-08-10T04:00:00Z And just to be clear: The Hubble Constant in question is the rate of expansion in our “local” universe, not the rate of expansion when the background radiation was first emitted billions of years ago. Scientists are baffled: What’s up with the universe? 2019-10-31T04:00:00Z "It's kind of just background radiation at Christmastime," he said. Macaulay Culkin responds to news of 'Home Alone' reboot at Disney 2019-08-08T04:00:00Z In particular, different theories for galaxy formation predict quite different fluctuations in the cosmic background radiation on angular scales less than about one degree. The Evolution of the Universe 2019-10-08T04:00:00Z The National Academy of Sciences on Monday published all three studies — on background radiation, food, and crater sediments. Radioactivity in parts of the Marshall Islands is far higher than Chernobyl, study says 2019-07-15T04:00:00Z “They are much higher than background radiation before the accident.” Fukushima grapples with toxic soil that no one wants 2019-03-11T04:00:00Z Scientist Maurizo Tomasi of Rome, Italy, journeyed to the Waste Isolation Pilot Plant in Carlsbad to conduct research last week due to the salt mines’ low levels of background radiation, the Carlsbad Current Argus reports . Italian scientist eyes plant growth at nuclear repository 2018-12-15T05:00:00Z To search for dark matter, physicists deploy ultrasensitive detectors deep underground, where they are shielded from cosmic rays and other background radiation. Underground experiment casts doubt on controversial dark matter claim 2018-12-05T05:00:00Z The radiation exposure from a hand or a foot X-ray, for example, is about the same as three hours of background radiation — the environmental radiation we are all continually exposed to. Which Type of Medical Scan Is Right for Me? 2018-11-23T05:00:00Z “Phenomena known as gravitational lenses, as well as studies of the cosmic background radiation, provide further convincing support for the existence of dark matter,” says Professor Lahav. Witches, goblins and the quest to solve the mystery of dark matter 2018-10-20T04:00:00Z The dread was partly rooted in reality, what with the rugged schedule and the self-destructive tendencies and the personnel flaws and the rookie quarterback and the frustrated father and the has-Chip-lost-it background radiation. Pac-12 Power Rankings Week 7: If only the Huskies had a better kicking option than a freshman walk-on 2018-10-15T04:00:00Z High-grade potash was used from a nearby mine to separate incubator-containing seeds, to minimize the effects of background radiation. Italian scientist eyes plant growth at nuclear repository 2018-12-15T05:00:00Z But it was also a sort of constant background radiation. Return to an alternate history space race with two new Lady Astronaut novels 2018-09-18T04:00:00Z A map of the Universe’s cosmic microwave background radiation, and its polarization, measured by the Planck satellite.Credit: Big Bang telescope finale marks end of an era in cosmology 2018-07-19T04:00:00Z One uses the cosmic microwave background radiation, which is the faint afterglow of the Big Bang. For the first time, astronomers have a reliable map of the heavens 2018-04-26T04:00:00Z The exposures from the plutonium releases last year were minuscule by comparison, estimated to be a small fraction of the background radiation that every human gets from nature. Blowing in the wind: Plutonium at former nuclear weapons site 2018-04-16T04:00:00Z The temperature of interstellar space is typically given as that of the cosmic microwave background radiation that permeates the universe: about 2.7 kelvins. Readers Respond to the December 2017 Issue 2018-04-01T04:00:00Z At first the gas and the microwave were in tune with each other, and the hydrogen was emitting just as much as it received from the background radiation bath. When Stars Were Born: Earliest Starlight’s Effects Are Detected 2018-02-28T05:00:00Z As those early stars began breathing ultraviolet light into the cosmos, their photons mingled with primordial hydrogen gas, causing it to absorb background radiation and become translucent. We May Have Found the First Stars Born After the Big Bang 2018-02-28T05:00:00Z This would create an absorption feature in the spectrum of the background radiation left over from the Big Bang. A surprising chill before the cosmic dawn 2018-02-27T05:00:00Z "At all times it is low, barely above background radiation," he said. Toxic mud dump claim 'alarmist' 2017-12-05T05:00:00Z Russia’s nuclear corporation Rosatom said at the time that “radiation around all objects of Russian nuclear infrastructure are within the norm and are at the level of background radiation”. Russia reports radioactivity 986 times the norm after nuclear accident claim 2017-11-20T05:00:00Z Positrons help create this gamma-ray fog when they slam into the cosmic microwave background radiation, the photons of light left over from the big bang that formed the universe. Through a Gas, Darkly: Scientists Trace the Origins of Earth's Antimatter 2017-11-16T05:00:00Z Entombed beneath the Black Hills by thousands of feet of solid rock, these experiments are shielded from much of the background radiation that bathes the planet’s surface. Physicists Go Deep in Search of Dark Matter 2017-07-11T04:00:00Z Arno Penzias and Robert Woodrow Wilson found noise in their radio antenna, which other physicists later explained was actually the discovery of the cosmic microwave background radiation from the time of the Big Bang. Why Vera Rubin Deserved a Nobel 2017-01-04T05:00:00Z George Smoot shared the 2006 Nobel Prize in Physics for the discovery of small temperature variations in the cosmic microwave background radiation, providing support for Big Bang theory. Q&A: George Smoot : Nature : Nature Research 2016-09-27T04:00:00Z Meanwhile, Central Park itself clocked in at 100 millirem per year, probably because of background radiation from granite found in the park. Some U.S. nuke testing sites are now less radioactive than Central Park 2016-06-06T04:00:00Z This might be a reading of air temperature, a measurement of background radiation, or variations in atmospheric noise. Random number generator 'improved' - BBC News 2016-05-17T04:00:00Z The artist uses phrases like “incremental expansion” and “background radiation phenomenon”. Sculptor Antony Gormley: 'the selfie is charming' but it's a modern paradox 2016-05-09T04:00:00Z Now television stations and newspapers report ‘today’s background radiation level’ of each municipality every day, and a number of radiological monitors show radiation levels in real time. 'You could see this was big by the look on people's faces' – readers remember the Japan tsunami five years on 2016-03-10T05:00:00Z There are places in Cornwall in the UK where background radiation levels reach 8 millisieverts a year. Is Fukushima's exclusion zone doing more harm than radiation? - BBC News 2016-03-10T05:00:00Z That compares with the government's goal of one millisievert a year and the 3 millisieverts a year the average person in the United States is exposed to annually from natural background radiation. Japan's nuclear refugees face bleak return five years after Fukushima 2016-03-02T05:00:00Z George stared at nothing in particular, soaking in the details of the microwave background radiation. Beyond 550 astronomical units : Nature : Nature Publishing Group 2015-12-01T05:00:00Z Remember, there are two kinds of radiation in outer space: the SPEs and the background radiation from cosmic rays. How to poop like an astronaut 2015-11-23T05:00:00Z To spot such rare decay—if it exists—physicists need to work far underground, where background radiation is low, and to observe large amount of nuclei, such as xenon-136, germanium-76, or tellurium-130. U.S. nuclear physicists push for new neutrino experiment 2015-10-15T04:00:00Z How can that background radiation still be sloshing around? Readers Respond to "The Amazing Teen Brain" 2015-10-10T04:00:00Z The United States’ manned moon expeditions ended in 1972, but modern cosmology began with the 1965 discovery that the universe is permeated with background radiation. A new hope in space 2015-10-02T04:00:00Z After that, Snowden said, alien messages would be so encrypted that it would render them unrecognisable, “indistinguishable to us from cosmic microwave background radiation”. Edward Snowden: we may never spot space aliens thanks to encryption 2015-09-19T04:00:00Z The finding implies that some cases of leukaemia will even be caused by a high level of natural background radiation, he adds, “though the increased risk for an individual is going to be vanishingly small”. Researchers pin down risks of low-dose radiation 2015-06-29T04:00:00Z That number would be overwhelming on the surface, where cosmic rays constantly rain down from the skies and background radiation levels are much higher than they are beneath 4,850 feet of shielding rock. Sanford Lab’s LUX experiment hunts for dark matter 2015-06-15T04:00:00Z The men knew the nuclear tests had occurred, but were told that “the radiation there was the same as the background radiation in Denver,” he says. Veteran links health issues to Marshall Islands radiation 2015-05-30T04:00:00Z It is unclear whether it hit parts of the zone heavily contaminated by radiation from the 1986 reactor explosion and fire, but Yatsenyuk said no change in background radiation was registered. World Digest: April 28, 2015 2015-04-28T04:00:00Z The cumulative effects of normal background radiation also gradually damages the DNA in frozen tissue. Can scientists bring mammoths back to life? 2015-02-06T05:00:00Z A flotilla of experiments devoted to the cause are underway, studying a thin haze of microwaves, known as cosmic background radiation, left from the Big Bang, when the cosmos was about 380,000 years old. A Speck of Interstellar Dust Rebuts a Big Bang Theory 2015-01-30T05:00:00Z She outlined the criteria for classifying planets and discussed the discovery of cosmic background radiation, mentioning that the Milky Way will collide with the Andromeda Galaxy in four billion years. U-M planetarium aims to bring stars in full focus 2014-12-29T05:00:00Z Even background radiation all around you every day. Do Not Fear the Radiation In Medical Scans 2014-12-03T05:00:00Z If the exposure is not small compared with the exposure from the average sea level background radiation — 0.3 rem — it is a significant issue. Patient Results, Risks Beyond Fertility, Tallying Up What We Eat 2014-12-01T05:00:00Z The only thing we knew was related to the cosmic microwave background radiation which originated about 400,000 years after the Big Bang. Avi Loeb Ponders the Early Universe, Nature and Life 2014-12-01T05:00:00Z A regular-dose chest CT, on the other hand, exposes you to about two years’ worth of natural background radiation, or 7 mSv. The Hidden Dangers of Medical Scans 2014-11-22T05:00:00Z Like live in background radiation that bathes every country on Earth? Germans Boared With Chernobyl Radiation 2014-09-05T04:00:00Z “By way of comparison, all of us in Baltimore receive a yearly dose from background radiation of over 300 mrem,” he wrote in an email. US sailors prepare for fresh legal challenge over Fukushima radiation 2014-08-20T04:00:00Z But on July 11, 1989, Science Times reported the uncomfortable possibility that this ubiquitous background radiation might cause cancer. Debate Continues on Hazards of Electromagnetic Waves 2014-07-07T04:00:00Z But in their paper Dr. Krauss and Dr. Wilczek suggest how gravitons might leave their mark on cosmic background radiation, the afterglow of the Big Bang. Defying Gravity, a Businessman Helped to Understand It 2014-06-23T04:00:00Z Spergel also says the BICEP2 team evidently failed to factor in contamination from the cosmic infrared background radiation that comes from distant, dusty galaxies. Backlash to Big Bang Discovery Gathers Steam 2014-05-21T04:00:00Z With so much at stake, the small community of scientists who study the cosmic microwave background radiation is on edge, waiting for the discovery to be confirmed by additional data. Cosmology conundrum: Did astronomers see “cosmic inflation” or do they just need to clean their lenses? In 10 days here a person would be exposed to as much background radiation as a typical resident of the United States receives from all sources in a year. At Chernobyl, Hints of Nature’s Adaption 2014-05-05T21:40:37Z Mr Kerr said: "They don't realise that as they ascend into the heavens their exposure to natural background radiation from outer space - cosmic rays - increases." Everest radiation 'significant' 2014-04-30T10:16:25Z What actually happened 50 years ago was that Arno Penzias and Robert Wilson of Bell Labs made measurements of the cosmic background radiation that provided the first solid evidence of the Big Bang’s existence. The Big Bang Did NOT Occur 50 Years Ago 2014-04-21T20:35:59Z But they have inferred the waves’ presence from their effect on the cosmic microwave background radiation—a faint afterglow of the universe’s hot youth that now forms an electromagnetic mist which pervades the cosmos. Astrophysics: BICEP flexes its muscles 2014-03-20T16:01:13Z Computer models predicted a particular curl pattern in the background radiation that would match what would be expected with the universe's inflation after the big bang. Astronomers discover echoes from expansion after Big Bang 2014-03-17T15:53:43Z Instead they noticed that the background radiation was polarized, its waves of electromagnetic energy oscillating not in random directions but in just a few specific ones. Cosmic Bulletins: Two Major Discoveries Rock Science 2014-03-17T15:01:01Z The natural background radiation collected by these filters for that amount of time is always about 40 Bq. WIPP Is Still The Best and Only Choice For Nuclear Waste 2014-03-06T04:13:00Z The background radiation shows the small density variations in the early universe that would eventually cause matter to clump in some places and form voids in others. Cosmic Mismatch Hints at the Existence of a 'Sterile' Neutrino 2014-02-20T12:00:00Z However, the government also set a lower, long-term target of 1 millisievert - twice the background radiation in Denver. For many Fukushima evacuees, the truth is they won't be going home 2013-11-11T05:13:07Z By contrast, Japan's government is attempting to bring background radiation levels in the most highly contaminated evacuation zone to an average of 1 millisievert per year once all the work is completed. Insight: Japan's nuclear clean-up: costly, complex and at risk of failing 2013-08-14T21:04:36Z The basic facts are well-known to informed audiences but they bear repeating: we are bathed in a sea of background radiation whose level often exceeds levels from even the worst nuclear accidents like Chernobyl. Hope springs eternal: "Pandora's Promise" and the truth about nuclear energy 2013-06-05T02:45:01.033Z It’s actually the cosmic background radiation pouring in from all over the universe. Supernova Superstar: The Most Distant and Important One Yet 2013-04-26T11:05:21Z Any health effects from the more abundant and diverse background radiation would completely swamp anything from reactors. Do Nuclear Power Plants Cause Cancer? 2013-04-01T05:20:54Z Observations of the rotation of galaxies and of the cosmic background radiation — the afterglow of the Big Bang — suggest that some 85% of matter in the Universe exerts gravitational pull, but does not radiate light. Dark-matter hunt gets deep 2013-02-20T18:20:30.747Z Before hunting for entangled photons, I test the Geigers and c-box by measuring the background radiation—specifically, cosmic rays. How to Build Your Own Quantum Entanglement Experiment (Part 1 of 2) 2013-02-08T16:45:03.680Z He and Mr. Lax, a medical writer explain how mild doses of background radiation may be harmless, while extreme levels can cause cancer. Scan: Issac Newton Play Begins Performances 2013-01-28T17:52:00Z The team took background radiation readings as they moved through the zone. Chernobyl mammals tracked in snow 2012-12-31T05:17:35Z Because the general public is so frightened about anything radioactive, even natural background radiation, panic would occur even if there is no health threat from the radioactive component. Mitt Romney, Iran And Dirty Bombs -- So Very, Very Wrong 2012-09-22T02:36:56Z There, interference from cosmic rays and other sources of background radiation would swamp any signal from proton decays or supernova explosion. Fermilab Physicists Present Their Reworked Plans for Giant Neutrino Experiment 2012-08-29T23:12:00Z Now, however, the amount of radiation used medically rivals that of the background radiation, adding three millisieverts each year to the average person's exposure. Personal Health: Medical Radiation Soars, With Risks Often Overlooked 2012-08-20T20:02:21Z In Chernobyl, all of the animals decreased with increasing levels of background radiation. Green Blog: Fukushima vs. Chernobyl: How Have Animals Fared? 2012-07-12T13:58:20Z Their ongoing aim is to measure the effect of background radiation on wildlife. Chernobyl mammals tracked in snow 2012-12-31T05:17:35Z This was helpful to my research on the effects of exposure to high local background radiation. Summer books 2012-07-05T15:50:26.970Z The problem with many of these models is that when they are run, the Higgs decreases in energy too quickly and therefore would not generate fluctuations seen in the cosmic microwave background radiation. Could the Large Hadron Collider Discover the Particle Underlying Both Mass and Cosmic Inflation? 2012-06-29T10:45:00.233Z Everyone is exposed to a certain amount of background radiation - about three millisieverts a year from cosmic rays, radon gas and the earth's radioactive elements. Personal Health: Medical Radiation Soars, With Risks Often Overlooked 2012-08-20T20:02:21Z The importance of their discovery of the anisotropy of the cosmic microwave background radiation and the accelerated expansion of the universe, respectively, cannot be overstated in the current cosmological paradigm. 30 under 30: An Astronomer Tracing the Universe's History 2012-06-14T11:15:02.590Z In any case, >99.5% of background radiation is natural or from medical sources.If only we paid as much attention to the emissions from fossil fuels, the world would be a much healthier place. Stockholm: Birth of the green generation 2012-06-04T21:00:00Z In a 124-page report, it added that neighboring countries had levels similar to normal background radiation and for the rest of the world there was some minor exposure through food. UN: Fukushima workers' deaths not from radiation 2012-05-23T20:01:04Z The only hope of seeing such a rare event was to monitor a huge amount of matter for a long time, while shielding it from any background radiation that might swamp the signal. Gran Sasso: Chamber of physics 2012-05-23T21:50:23.633Z Before the disaster, people in Japan were exposed to about 1 millisievert of natural background radiation a year; in the United States the average is about 3 millisieverts. Health uncertainties torment Japanese in nuke zone 2012-03-09T16:36:09Z Taking into account natural background radiation, medical procedures and other sources, people in the U.S. encounter an average of about 6.5 millisieverts per year. Japan's Post-Fukushima Earthquake Health Woes Go Beyond Radiation Effects 2012-03-02T21:15:00.213Z Radiation is harmful to living things, yet the long-term effects of persistently high levels of background radiation on ecosystems are poorly understood. Radiation and evolution: Surviving fallout 2012-03-01T16:00:40Z It betrayed its existence by a shadowy imprint in the cosmic background radiation—the "afterglow" of the Big Bang. When Galaxies Crash 2012-01-10T23:07:47Z Radiation experts say the dose from the backscatter is negligible when compared to naturally occurring background radiation. U.S. Glossed Over Cancer Concerns Associated with Airport X-ray Scanners 2011-11-01T20:45:00.500Z He believes 5 millisieverts of radiation a year - five times the typical amount of background radiation in Japan - is a realistic goal. Health uncertainties torment Japanese in nuke zone 2012-03-09T16:36:09Z The Cardinals are coming off a dramatic win, and the Red Sox, while not exactly hot, can at least be distinguished thermally from the background radiation of the universe. Bats: How Weird Can It Get? 2011-09-28T19:15:58Z A single abdominal CT would expose a child to up to 5 mSv of radiation -- or 20 months' worth of background radiation -- at once. CT scans to spot appendicitis up sharply in U.S. 2011-08-18T19:18:06Z But outrageous fortune was sort of background radiation in that part of California at that moment. Douglas Edwards: I was Google employee No 59 2011-07-30T23:04:10Z Sunyaev merited the prize for his work on the cosmic microwave background radiation. Cosmic Microwaves and Alloys Earn Kyoto Prizes 2011-06-24T17:15:04.013Z In normal operations, international nuclear workers are limited to an average exposure of 20 millisieverts per year, about 10 times natural background radiation levels. Special report: Japan's "throwaway" nuclear workers 2011-06-24T08:14:23Z However, this cosmic microwave background radiation — the first light to escape matter after the Big Bang — appeared nearly 400,000 after the birth of the universe, and much of what happened beforehand remains mysterious. Too Hard for Science? Neutrinos from the Big Bang 2011-06-17T13:15:02.290Z People in the Fukushima area are confronting regular levels of contamination in the range of 5 to 10 times what people are normally exposed to in natural background radiation. Radiation?s Unknowns Weigh on Japan 2011-06-07T00:00:01Z With luck it will be able to look far back into the history the universe beyond the formation of the cosmic microwave background radiation, when the universe was opaque to electromagnetic rays. European Scientists Launch Design of New Gravitational Wave Telescope 2011-05-19T19:49:00Z With the Soviet physicist Yakov Zel'dovich, he pioneered the idea that this background radiation originated with the big bang and that observing it today could inform scientists about the early universe and its expansion. Cosmic Microwaves and Alloys Earn Kyoto Prizes 2011-06-24T17:15:04.013Z The measured levels range from two to 1000 times normal background radiation—and residents, officials, and scientists wonder what that may mean for public health. [News Focus] Tohoku-Oki Earthquake: Fukushima Revives The Low-Dose Debate 2011-05-19T18:25:06.877Z Nuclear Regulatory Commission recommends that beyond background radiation, the average person should limit their exposure to less that one millisevert a year. Integrative Way: The latest on radiation exposure 2011-05-02T17:37:04Z The only legacy we will leave is the background radiation of nuclear waste and the ecological and geological effects of climate change and that is not an appropriate one. Living poetry 2011-04-28T10:18:47Z Still, there are parts of the world—in Guarapari, Brazil for example—where natural background radiation levels are even higher. A Map of Fukushima's Radiation Risks 2011-04-22T16:17:21Z Sunyaev and Zel'dovich also created a new method for measuring the distances between galaxy clusters based on the clusters' scattering of the cosmic microwave background radiation. Cosmic Microwaves and Alloys Earn Kyoto Prizes 2011-06-24T17:15:04.013Z Some researchers believe even unavoidable background radiation can be a factor in causing cancer. [News Focus] Tohoku-Oki Earthquake: Fukushima Revives The Low-Dose Debate 2011-05-19T18:25:06.877Z He did multiple runs to test the background radiation in the classroom. Essay: Is This the Poster Food for a Radiation Menace? 2011-04-11T20:27:54Z According to the Environmental Protection Agency, people receive 0.3 rem per year from natural background radiation. Radiation Is Everywhere, but How to Rate Harm? 2011-04-04T21:26:24Z Normal background radiation levels are on the order of 2 millisieverts per year. Clean-up 2011-04-04T14:14:55Z EPA’s RadNet radiation air monitors across the U.S. show typical fluctuations in background radiation levels. Three Sites Where You Can Monitor U.S. Radiation Levels 2011-03-28T14:26:27Z Thus, those of us who see dread as robust do not think it will be particularly productive to teach about background radiation. Dot Earth: 'Warning Whiplash' With Radiation in the News 2011-03-24T19:55:32Z Twenty-five years later, only official workers are allowed within 30 kilometers of the entombed reactor at Chernobyl, and radiation levels inside the zone exceed normal background radiation by factors of 100. The Future of Fukushima Prefecture 2011-03-24T04:10:41Z People are generally exposed to about 1 to 10 millisieverts each year from background radiation caused by substances in the air and soil. Radiation anxiety grows in disaster-struck Japan 2011-03-22T00:11:18Z Even as higher-than-normal levels of background radiation are detected in the U.S., it is unlikely to pose a health risk. Health Risk Fears Escalate as Japan Nuclear Plant's Radioactive Release Remains Uncertain 2011-03-18T20:45:02.373Z Once you get 40 or 50 miles from the plant, your background radiation levels won’t change.” Radiation From Worst-Case Nuclear Disaster Is Limited Threat 2011-03-18T08:21:17Z That exposure level is somewhere between an X-ray and the background radiation people receive during a year. Radiation Thwarts Helicopter Plan 2011-03-16T14:41:18Z By comparison, most people receive about three-tenths of a rem every year from natural background radiation, according the U.S. Experts: Nuclear fallout from Japanese plant poses little threat to United States _ for now 2011-03-15T23:49:34Z Level of radiation: The average person is exposed to 0.2 to 0.3 microsieverts of background radiation per year, a combination of cosmic radiation and emissions from building materials and natural radioactive substances in the environment. How Radiation Threatens Health 2011-03-15T23:45:00.243Z And safety standards for nuclear industry employees allow for more than six times average U.S. background radiation, which is still far below levels considered carcinogenic. Health Risk Fears Escalate as Japan Nuclear Plant's Radioactive Release Remains Uncertain 2011-03-18T20:45:02.373Z Naval Forces Japan, said the additional radiation exposure for the past 12 hours at the two bases was about 20 millirem, less than one month's exposure to naturally occurring background radiation. U.S. moves to shield forces from Japan radiation risk 2011-03-15T20:17:32Z According to the Environmental Protection Agency, most people in the United States receive 0.3 rem per year just from normal, background radiation. Japan Radiation Risk Seen as Low so Far 2011-03-13T23:03:14Z Further complicating a statistical analysis is the fact that humans are exposed every day to background radiation. How Much Radiation Is Safe? 2011-03-13T23:32:14Z The radiation dosage from one scan typically ranges from a few millisieverts -- comparable to the yearly background radiation from natural sources -- to tens of millisieverts. Patients underestimate CT scan radiation, risks 2011-01-05T19:50:18Z Unfortunately for physicists, Dr Hawking also predicted that the typical temperature at which a black hole radiates should be about a billionth of that of the background radiation left over from the Big Bang itself. Mimicking black holes: Dr Hawking's bright idea 2010-09-30T10:54:00Z A single chest CT would expose a child to a comparable amount of radiation, while an abdominal CT would expose him or her to up to 5 mSv, or 20 months' worth of background radiation. Repeat imaging in kids with cancer: a balancing act 2010-09-27T19:44:00Z Much of the Borexino experiment is a process of eliminating the "noise" of background radiation. Discovery of Subatomic Particles Could Answer Deep Questions in Geology 2010-06-22T16:08:00Z There are cities where background radiation level is extraordinarily high, such as Denver, but the cancer rates are particularly low. How Much Radiation Is Safe? 2011-03-13T23:32:14Z |
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