| 单词 | megaton |
| 例句 | By the late twentieth century, two megatons was the energy released in the explosion of a single more or less humdrum thermonuclear bomb: one bomb with the destructive force of the Second World War. Cosmos 1980-01-01T00:00:00Z The cometary impact and fireball would simulate all effects of a one- megaton nuclear burst, including the mushroom cloud, with two exceptions: there would be no gamma radiation or radioactive fallout. Cosmos 1980-01-01T00:00:00Z Then came Livermore’s turn, with a device code-named Morgen- stern that was expected to yield one megaton. Big Science 2015-07-07T00:00:00Z “I’m uploading all of these to the cloud, so they’re not being stored on my phone. We have a megaton of video, so that was the best option.” When Dimple Met Rishi 2017-05-30T00:00:00Z One fragment, known as Nucleus G, struck with the force of about six million megatons–seventy-five times more than all the nuclear weaponry in existence. A Short History of Nearly Everything 2003-05-06T00:00:00Z This one encompasses some 300 objects, from filigreed hairpins to a couple of megaton sculptures, most of them hard-won loans from China. Art Review: The Spirit of Xanadu, Morphing Across Borders 2010-09-30T21:52:00Z With megaton amplification, the loud playing in the outer sections of two Chopin scherzos and in two pieces from Tchaikovsky’s “The Seasons” was deafening and soul-deadening. Review: Lang Lang at the Metropolitan Museum in the Service of Eastern Art 2015-05-18T04:00:00Z A megaton is the equivalent of a million tons of TNT, and China plans to use them against U.S. cities in the case of an open conflict. China’s rapid buildup of nuclear weapons shows no end in sight, Pentagon warns 2023-10-19T04:00:00Z Every year, krill remove as much as 23 megatons of carbon dioxide from the atmosphere, according to new research published by the World Wildlife Fund. Factory fishing in Antarctica for krill targets the cornerstone of a fragile ecosystem 2023-10-13T04:00:00Z In this way, krill remove as much as 23 megatons of carbon dioxide from the atmosphere every year, according to new research published by the World Wildlife Fund. Takeaways from AP’s reporting on Antarctica’s burgeoning krill fishery 2023-10-13T04:00:00Z The global CO2 release from rock organic carbon weathering was found to be 68 megatons of carbon per year. Ancient carbon in rocks releases as much carbon dioxide as the world's volcanoes 2023-10-04T04:00:00Z If Bennu collides with Earth, it will release 1,200 megatons of energy, or 24 times as much as the most powerful nuclear weapon built so far. NASA found materials on an asteroid like those that may have "triggered the origin of life" on Earth 2023-10-01T04:00:00Z That’s why a warhead about 1 meter long can explode with the force of a megaton of TNT. Trust but verify: Can the U.S. certify new nuclear weapons without detonating them? 2023-04-20T04:00:00Z They are forecast to rise another 23 megatons by 2030 unless CCS projects take off and the federal government passes tougher climate legislation, including a controversial federal oil and gas emissions cap, the think-tank said. IPC CEO urges Canada to offer more funding to build carbon capture 2023-03-19T04:00:00Z Increased deployment of renewable energy, electric vehicles and heat pumps together helped prevent an additional 550 megatons of carbon dioxide emissions, the IEA said. Carbon dioxide emissions reached a record high in 2022 2023-03-01T05:00:00Z One of the strongest solar flares ever seen, the Carrington Event of 1859, may have released as much energy as 10 billion megatons of exploding TNT. Should You Really Worry about Solar Flares? 2023-01-26T05:00:00Z Experts estimate that the amount of energy released by the eruption was as much as 60 megatons, roughly equal to the most powerful hydrogen bomb ever detonated. Tonga volcano eruption blasted millions of tons of water into space 2022-12-12T05:00:00Z The offsets cover 27 million megatons of “unavoidable” carbon dioxide emissions – a price that works out to just $5.04 a ton, which some experts find preposterous. Delta and other firms are struggling to meet sky-high climate pledges 2022-11-05T04:00:00Z The study—published in Environmental Pollution—adds another statistic: the fires released roughly 127 million megatons of greenhouse gas emissions, or about twice California’s total emission cuts from 2003 to 2019. California’s 2020 Wildfires Negated Years of Emission Cuts 2022-10-18T04:00:00Z It’s estimated the force of the explosion might have measured up to 15 megatons of TNT. Opinion | Three cheers for NASA’s asteroid smasher 2022-09-26T04:00:00Z “How the heck is law enforcement supposed to find a few metric tons in an economy that trades megatons of raw materials?” DEA: Fake pills containing fentanyl helping drive OD deaths 2022-09-27T04:00:00Z He radiated megatons of energy, as if this shop and this world could not contain him. Perspective | Amsterdam Falafelshop and the art of moving on after a broken heart 2022-09-19T04:00:00Z Estimates for ants’ total biomass had a wide range, from 2.5 megatons of carbon to 70 megatons. Counting the World’s Ants Requires a Lot of Zeros 2022-09-22T04:00:00Z That’s 12 megatons of biomass—more than all the wild birds and mammals taken together. How many ants live on Earth? 2022-09-18T04:00:00Z Energy yields are measured in kilotons or megatons of equivalent conventional explosives and range from 0.1 kT to more than 20 MT. College Physics for AP Courses 2015-08-12T00:00:00Z A much larger atmospheric explosion took place in Russia in 1908, caused by an asteroid about 40 meters in diameter, releasing an energy of 5 megatons, as large the most powerful nuclear weapons of today. Astronomy 2016-10-13T00:00:00Z Its impact unleashed an explosion equivalent to 5,000 megatons of TNT, 100 times as much energy as the most potent nuclear device ever detonated. African Crater Adds an Asteroid Strike to the Late Dinosaur Era 2022-08-17T04:00:00Z The ant biomass also weighs around 12 megatons, which is about the equivalent of two Pyramids of Giza on a scale. Counting the World’s Ants Requires a Lot of Zeros 2022-09-22T04:00:00Z What will we do with the megatons of toxic trash? Joe Biden wants to jump-start solar energy — a great idea, in theory. But will it work? 2022-06-11T04:00:00Z But given Keighley’s caution against expecting “megaton shocks,” it’s a long shot. How to watch Summer Game Fest 2022 2022-06-09T04:00:00Z This was only a temporary enrichment of Jupiter’s family, however, because in July 1994, all the comet fragments crashed unto Jupiter, releasing energy equivalent to millions of megatons of TNT. Astronomy 2016-10-13T00:00:00Z According to Pentagon officials familiar with intelligence reports, the Poseidon will be equipped with a nuclear warhead measured in the tens of megatons of explosive power. Russia to deploy nuclear-armed drone torpedo 2022-05-18T04:00:00Z Last month, a study in the journal Joule found that Bitcoin mining worldwide may be responsible for about 65 megatons of carbon dioxide a year, comparable to the emissions of Greece. Bitcoin Miners Want to Recast Themselves as Eco-Friendly 2022-03-22T04:00:00Z Most nuclear weapons today are variable-yield, or “dial-a-yield,” providing a set amount of explosive power that can range from fractions of a kiloton to multiples of a megaton. ‘Limited’ Tactical Nuclear Weapons Would Be Catastrophic 2022-03-10T05:00:00Z It is believed to be Earth's largest volcanic eruption in roughly three decades, and exploded with the force of 10 megatons of TNT. Tonga suffers a humanitarian crisis as residents struggle to recover from volcanic eruption 2022-01-20T05:00:00Z Copernicus said its preliminary analysis of satellite measurements had found that concentrations of heat-trapping gases continued to rise last year, helped by 1,850 megatons of carbon emissions from wildfires worldwide. 2021 Was Earth’s Fifth-Hottest Year, Scientists Say 2022-01-10T05:00:00Z A megaton is the equivalent of 1 million tons of TNT. Russia to deploy nuclear-armed drone torpedo 2022-05-18T04:00:00Z Bravo’s designers expected it to have a yield of six megatons — equivalent to 6 million tons of TNT — and produce a cigar-shaped fallout cloud extending 15 miles downwind. Review | Experimenting with hydrogen bombs, the U.S. blew lives apart 2021-11-03T04:00:00Z One would be 1,000 megatons — or 20 times as powerful as the planet shaker the Soviets would come to detonate in 1961. When the Soviets Set Off the Biggest Nuclear Bomb, J.F.K. Didn’t Flinch 2021-10-30T04:00:00Z World Fund said it would use its own methodology to evaluate which companies show the potential to reduce at least 100 megatons of carbon dioxide emissions annually in industries including food, transport, construction and energy. World Fund climate VC fund aims to raise 350 million euros for green startups 2021-10-26T04:00:00Z There’s no clear Johnny Plumseed for Washington the way there is for California, where brothers Louis and Pierre Pellier are credited with using plum scions from France to kick-start the megaton California prune industry. Italian plums took over Seattle, and everyone agrees (loudly) you must use them for a Marian Burros Plum Torte 2021-08-10T04:00:00Z Fans will be on the lookout for the “megatons” — unexpected, exciting news about devices or games that will be the talk of the show. Microsoft and Nintendo ready game announcements for subdued virtual E3 2021-06-12T04:00:00Z Bravo exploded with a force of 15 megatons. Review | Experimenting with hydrogen bombs, the U.S. blew lives apart 2021-11-03T04:00:00Z The other would be 10,000 megatons, or 200 times as destructive. When the Soviets Set Off the Biggest Nuclear Bomb, J.F.K. Didn’t Flinch 2021-10-30T04:00:00Z The Liberals unveiled a strengthened climate plan last year aimed at reducing emissions to 503 megatons. UPDATE 3-Canada’s top court upholds pillar of Trudeau’s plan to fight climate change 2021-03-25T04:00:00Z A study published by science journal Joule said cryptocurrency computers pumped about 23 megatons of carbon dioxide into the atmosphere in 2018. Elon Musk's Bitcoin embrace is a bit of a head-scratcher 2021-02-08T05:00:00Z “Cars & trucks stuck in traffic generate megatons of toxic gases & particulate, but @boringcompany road tunnels under Miami would solve traffic & be an example to the world,” he wrote. Miami mayor says Elon Musk will tunnel under the city for just $30 million 2021-02-05T05:00:00Z “Cars & trucks stuck in traffic generate megatons of toxic gases & particulate, but @boringcompany road tunnels under Miami would solve traffic & be an example to the world,” he said on Twitter. Miami mayor digs Elon Musk’s tunnel pitch to ease traffic 2021-02-05T05:00:00Z The federal government says the CFS will cut annual emissions by more than 20 megatons by 2030, which would be around 10% of the reductions needed to meet Canada’s climate commitments. Explainer: How does Canada's Clean Fuel Standard policy work? 2020-12-29T05:00:00Z Until the Earth explodes, not by way of an asteroid or nuclear war or the Yellowstone volcano going bang, but simply through the detonation of a billion megatons of our species’ waste. I've been forced to become a hoarder – by an acute case of landfill panic | Adrian Chiles 2020-10-15T04:00:00Z Tens of thousands more would die the same way at Nagasaki a few days later, and the world would subsequently be hearing about megatons, mutual assured destruction, proliferation, nuclear winter, meltdowns and dirty bombs. Hiroshima’s Enola Gay carried 12 men, hope and the world’s deadliest weapon 2020-08-05T04:00:00Z Parrington said this is on top of the 59 metric megatons of carbon dioxide emitted from Arctic Circle fires in June. Wildfires, record warmth and rapidly melting ice: Arctic climate goes further off the rails this summer 2020-07-29T04:00:00Z A December 2019 analysis published by journal Obesity estimates that obesity contributes to an extra 700 megatons of carbon dioxide emissions per year globally—nearly the amount of Germany's man-made annual emissions. Obesity: America’s number one export? 2020-06-27T04:00:00Z The companies on the list are estimated to collectively emit more than 4,800 megatons of carbon dioxide equivalent annually, which is equal to the amount emitted by the U.S. in 2017. Facebook, Netflix, and Tesla are getting climate-shamed by investors 2020-06-11T04:00:00Z Last month the Dutch government announced a bold set of climate policies designed to reduce annual carbon emissions by nearly 10 megatons, comparable to the yearly output of Latvia. Climate action under duress: how Dutch were forced into emissions cuts 2020-05-04T04:00:00Z The fires, which have raged for months in Australia, have emitted 400 megatons of carbon dioxide and produced harmful pollutants, the European Union’s Copernicus monitoring program said Monday. World Digest: Jan. 7, 2020 2020-01-07T05:00:00Z Over the first 18 days of August alone, Arctic wildfires emitted 42 megatons of carbon dioxide. The Amazon, Siberia, Indonesia: A World of Fire 2019-08-28T04:00:00Z It estimated that the fires had already released 138 megatons of carbon dioxide, more than the annual emissions of many countries. Siberia just experienced wildfires on a staggering scale. Russia is rethinking how to fight them 2019-08-21T04:00:00Z But the merest hint that Iran may build a nuclear weapon is greeted with megatons of hypocritical horror. The nuclear arms race is back … and ever more dangerous now 2019-08-17T04:00:00Z The electricity used for Bitcoin produces about 22 megatons of CO2 annually, a study in the scientific journal Joule estimated. Bitcoin's global energy use 'equals Switzerland' 2019-07-03T04:00:00Z In his novel “Libra,” Don DeLillo calls the report “the megaton novel that James Joyce would have written if he’d moved to Iowa City and lived to be a hundred.” Robert Mueller, Best-Seller? 2019-04-01T04:00:00Z That brought the total for June, July, and the first part of August to more than 180 megatons, roughly three and a half times more than the country of Sweden emits in a year. The Amazon, Siberia, Indonesia: A World of Fire 2019-08-28T04:00:00Z Late last year, we watched as fallout from megaton nuclear sex scandal accusations turned GOP hopeful Roy Moore radioactive. Alabama editorial roundup 2018-05-16T04:00:00Z There are enough cores there to cause thousands of megatons of nuclear explosions. America's nuclear headache: old plutonium with nowhere to go 2018-04-20T04:00:00Z But a little noodling demonstrated that a reaction would have resulted in an explosion of approximately 3,140 megatons. This big 2018-03-20T04:00:00Z A few kilograms of matter simply dropped onto a typical neutron star will release the equivalent energy of a several megaton yield hydrogen bomb. The Techno-Signature Challenge 2018-03-11T05:00:00Z The review calls for the development of a low-yield submarine-launched missile, which critics say risks being seen by generals and political leaders as more “usable” than megaton thermonuclear weapons. Nuclear risk at its highest since Cuban missile crisis, says ex-energy secretary 2018-02-16T05:00:00Z “The EU will survive that first nuclear strike and will retaliate with megatons to the U.S.’s kilotons.” Boeing’s biggest trade fight could spark a U.S. confrontation with Europe 2018-02-10T05:00:00Z It created an unexpectedly large blast equal to 19 megatons of TNT. North Korea has made a nuclear weapon small enough to fit on a missile. How worried should the world be? 2017-08-09T04:00:00Z I sometimes think the decision in the 1960s to bury a command center for nuclear war under megatons of solid granite was America’s original lockdown moment. Preparing for doomsday 2017-07-19T04:00:00Z A nuclear weapon is a certain thing—atomic or hydrogen, fission or fusion, bomb or missile, so many megatons—but nothing could be more uncertain than the consequences of using one. The Atomic Origins of Climate Science 2017-01-22T05:00:00Z Back in 1983, the threat of nuclear war felt very real – and destructive force was talked about in megatons. How we made Transformers 2017-01-17T05:00:00Z That eruption released an estimated 28 megatons of sulfur. Only a Rumbling Volcano Could Make North Korea and the West Play Nice 2016-12-09T05:00:00Z For existing reservoirs, the new study found a slightly lower total amount of greenhouse gases—770 megatons per year—than previous studies. Hundreds of new dams could mean trouble for our climate 2016-09-28T04:00:00Z By comparison, Hare says, the U.S. effort, “gets relatively close, within 500 megatons. So that’s not bad.” United States will miss Paris climate targets without further action, study finds 2016-09-26T04:00:00Z The eruption injected about 100 megatons of sulfur aerosols into the stratosphere, a gaseous surge that eventually morphed into a global haze. 201 Years Ago, This Volcano Caused a Climate Catastrophe Today’s missiles are highly accurate, so there is no need for the huge thermonuclear yields—up to megatons—sought years ago to compensate for missing a target by miles. The Other Dangers From That North Korean Nuke Test 2016-01-19T05:00:00Z By analyzing the white pumice for geochemical clues, the team found that the Millennium Eruption actually emitted a large amount of sulfur into the atmosphere, an estimated 45 megatons of it. Only a Rumbling Volcano Could Make North Korea and the West Play Nice 2016-12-09T05:00:00Z While the explosion Wednesday was too small to be caused by what we normally think of as a thermonuclear weapon — a two-staged device with megatons of nuclear yield — the more likely possibilities are not comforting. North Korea is a joke. And that’s the problem. 2016-01-08T05:00:00Z Capable of flying 5,500 miles and packed with a 1.44 megaton nuclear warhead, the weapon stood on alert in locations throughout Wyoming, Colorado and Nebraska during the tense Cold War era. Progress slow on cleaning up former nuke sites 2015-12-13T05:00:00Z To put that number in perspective, the total emissions of CO2 for The Netherlands are about 200 megatons per year, Blok said. Paris climate talks' carbon footprint under scrutiny, after record-breaking 2014 conference 2015-12-08T05:00:00Z Alberta’s government also plans to legislate an overall emission limit of 100 megatons for the oil sands, which currently generate 70 megatons of carbon a year. Stung by Keystone reversal, Canadian province doubles down on renewable energy 2015-11-22T05:00:00Z On 14 October, emissions from the fires alone soared to 61 megatons, almost 97% of the country’s total emissions. Indonesia fires: Widodo visits haze-hit zone as country becomes worst polluter 2015-10-29T04:00:00Z On missiles, megaton warheads are called “city busters” designed to destroy entire metropolitan areas or to blast buried targets. Russian drone submarine would threaten U.S. coast; nuclear vessel in development 2015-09-08T04:00:00Z Explosive force started to be measured in megatons, like the hydrogen-bomb tipped Titan 2 intercontinental ballistic missiles arrayed around cities like Little Rock, Tucson and Wichita. 70 Years Since the First A-Bomb, Humanity Still Lives in Its Afterglow 2015-07-16T04:00:00Z So far, Donald Trump’s presidential campaign has lived up to, and arguably exceeded, every expectation for self-beclowning while also simultaneously having detonated a 50 megaton crazy bomb inside the GOP. Donald Trump is already doomed: Why his campaign is a bigger disaster than his hair 2015-07-06T04:00:00Z A report issued by the federal environment ministry on Monday said actual emissions in 2020 are projected to be 727 megatons. Canada says cannot meet 2020 emissions target without more action 2014-12-08T05:00:00Z More than 300 megatons of nuclear bombs are detonated over Britain, in the space of a 16-hour exchange. The nuclear attack on the UK that never happened 2014-10-29T04:00:00Z The Pentagon is in the process of retiring all of its megaton weapons. Russian drone submarine would threaten U.S. coast; nuclear vessel in development 2015-09-08T04:00:00Z This is where you will truly risk being caught flat-footed in a megaton celebrity-meteor shower. BREAKING: Clooney Nuptials Cause Rare Meteor Shower On Venice, Making Ordinary Life Nearly Impossible, Unless You Read This 2014-09-26T04:00:00Z India will also see a huge jump in urban transportation emissions, from about 70 megatons of CO2 today to more than 500 megatons in 2050. Cars Will Cook the Planet Absent Shift to Public Transportation 2014-09-17T04:00:00Z The largest test was the detonation of the 1954 Castle Bravo bomb, which, at 15 megatons, was 1,000 times more powerful that the bomb dropped on Hiroshima. Marshall Islands Nuclear Lawsuit Reopens Old Wounds London was expected to be devastated by two to four bombs of up to five megatons each exploding over the city. UK government's secret list of 'probable nuclear targets' in 1970s released 2014-06-05T04:00:00Z “The possible yield of the warhead, in the megaton class, clearly is an attempt to inflict catastrophic damage against U.S. or European naval facilities or coastal cities,” he added. Russian drone submarine would threaten U.S. coast; nuclear vessel in development 2015-09-08T04:00:00Z For every megaton of nuclear blast, roughly seven megacuries of tritium resulted. Is Radioactive Hydrogen in Drinking Water a Cancer Threat? 2014-02-07T12:01:00Z For every megaton of nuclear blast, roughly seven millicuries of tritium resulted. Is Radioactive Hydrogen in Drinking Water a Cancer Threat? 2014-02-07T12:01:00Z So 3 million barrels a day and 600 megatons of CO2. The Science of U.S. Energy: A Q&A with Secretary Ernest J. Moniz 2013-12-13T18:45:05.672Z Glasgow, Birmingham and Manchester were each said to be in line for one or two "airbursts" of up to five megatons. UK government's secret list of 'probable nuclear targets' in 1970s released 2014-06-05T04:00:00Z From 1996 to 2007, the modeling concluded that the amount of carbon taken up by the Arctic Ocean increased by 1 megaton annually. Will Arctic Meltdown Produce More Greenhouse Gases or Less? 2013-12-06T18:15:00.458Z Rather than just use bombs directly against cities, one could explode a large bomb of about 100 megatons high in the atmosphere, at about 80 kilometers. We tried to weaponize the weather 2013-04-27T19:00:00Z An 8km comet weighing 200 billion tonnes hitting Mars at that velocity would produce a blast equivalent to 60m megatons of high explosive—a million times the yield of the largest hydrogen bomb ever tested. Cometary billiards: Have you heard, it’s in the stars 2013-03-07T16:08:25Z At its current size, it would produce a blast equivalent to 2.4 megatons, or 180 Hiroshimas, after it entered our atmosphere. An Asteroid Doomsday Scenario 2013-02-14T08:50:00Z That is almost three times the yield of the largest nuclear bomb ever exploded, Tsar Bomba, which shook the Earth with an equivalent of 57 megatons of TNT. The God of Thunder, And Momentum 2013-02-07T15:45:00.263Z It weighs two tons, 200 tons, 200 megatons, and it’s going to land on your head. Is a two-state solution still possible — or is Israel toast? 2013-01-31T12:45:00Z Edward Teller guessed that the energy released in a fire would exceed that of the nuclear explosion, roughly the equivalent of a thousand megatons. We tried to weaponize the weather 2013-04-27T19:00:00Z Despite its relatively small size, the asteroid generated around 10 megatons of energy upon collision. Asteroid Hunter Gives an Update on the Threat of Near-Earth Objects 2013-01-22T19:15:08.327Z Between its kinetic and heat energy, the directed blast released the equivalent of 24 megatons of energy in a few short moments. The Cataclysm: "That Whole Mountain Range Had Just Exploded" 2012-12-13T14:15:13.120Z The hydrogen bomb that Pasquini and his crew saw that day was Grapple Y which - at three megatons - is still the most powerful nuclear bomb ever tested by the British. 'I think I saw the face of God' 2012-11-08T10:31:53Z The test, known as Starfish Prime, released the energy equivalent of 1.4 megatons of TNT—creating a huge electromagnetic pulse that produced spectacular aurora over the Pacific. How the U.S. Accidentally Nuked Its Own Communications Satellite 2012-07-11T16:45:00.227Z But this burn depletes soil, causes human health problems, and emits about 12 megatons of carbon dioxide. What Food Do We Grow, and Who Gets to Eat It? 2012-06-25T18:15:09.577Z The yield turned out to be 15 megatons, 1,000 times more than the fission bombs that destroyed Hiroshima and Nagasaki in 1945. What Are Science's Ugliest Experiments? 2012-05-14T23:45:07.783Z Over on his fantastic Pathogens: Genes And Genomes blog, biologist Nick Loman calls this “the megaton sequencing announcement we’ve been waiting for.” The Next DNA Disruptor? 2012-02-17T19:29:28Z The 57 megaton bomb, nicknamed “Ivan” after the imperial Russian Tsar known as Ivan the Terrible, detonated at an altitude of 13,779 feet before hitting land and erupting in a flash of light. It Was On A Night Like This In Russia, 50 Years Ago... 2011-10-31T02:55:02Z That — plus the chance that Oklahoma State and Texas Tech will go wherever they go — is the next megaton domino to thud to the ground. ACC additions only start of seismic shift 2011-09-19T02:16:00Z Current oil sands production, which is located in a 232-square-mile area in Alberta, accounts for 49 megatons of carbon dioxide equivalent a year, according to the Canadian government. Plan for Canada-to-Texas oil pipeline moves forward after environmental review 2011-08-26T16:33:43Z Physicists at Los Alamos National Laboratory, where the bomb was designed, estimated that it would have a yield equivalent to 5 million tons, or megatons, of conventional high explosives. What Are Science's Ugliest Experiments? 2012-05-14T23:45:07.783Z The collision reshaped Vesta's southern hemisphere, which to this day looks far smoother than the heavily cratered north, and sent megatons of rubble flying into space. NASA's Dawn Spacecraft Offers First Look at Asteroid Vesta 2011-08-02T09:50:00Z None of these private spacecraft, however, will have the hauling capability of NASA's shuttles; their payload bays stretch 60 feet long and 15 feet across, and hoisted megaton observatories like Hubble. Last Space Shuttle Comes Home, Ends 30-Year Era 2011-07-21T13:49:00Z A terror weapon if there ever was one, the 10,000-pound B-53 was designed to deliver an explosion of nine megatons. Story of B-53 'bunker buster' is a lesson in managing nuclear weapons 2010-10-19T02:33:00Z These emissions are expected to rise to 92 megatons by 2020, as Canada doubles its tar sands production. Plan for Canada-to-Texas oil pipeline moves forward after environmental review 2011-08-26T16:33:43Z The first three usually occur during autumn and winter; the last whenever the fractured rocks beneath the Los Angeles basin decide it’s time to release some megatons of pent-up energy. Home sweet passive home 2010-02-26T13:37:00Z Finally, at over a hundred megatons equivalent, he did get results—of a sort. The Galaxy Primes Larch put off another entertainment of small stuff, with a fifty megaton thermonuclear, viewscreen-piloted, among them. Space Viking What would be the effects of nitric oxides driven into the stratosphere by an all-out nuclear war, involving the detonation of 10,000 megatons of explosive force in the northern hemisphere? Worldwide Effects of Nuclear War: Some Perspectives If we apply these very rough yardsticks to a large-scale nuclear war in which 10,000 megatons of nuclear force are detonated, the effects on a world population of 5 billion appear enormous. Worldwide Effects of Nuclear War: Some Perspectives A modern ballistic missile may carry warhead yields up to 20 or more megatons. Worldwide Effects of Nuclear War: Some Perspectives Based on these calculations, fallout from the 500-plus megatons of nuclear testing through 1970 will produce between 2 and 25 cases of genetic disease per million live births in the next generation. Worldwide Effects of Nuclear War: Some Perspectives This means that between 3 and 50 persons per billion births in the post-testing generation will have genetic damage for each megaton of nuclear yield exploded. Worldwide Effects of Nuclear War: Some Perspectives It is estimated that more than 500 megatons of nuclear yield were detonated in the atmosphere between 1945 and 1971, about half of this yield being produced by a fission reaction. Worldwide Effects of Nuclear War: Some Perspectives With yields of 2-5 megatons or more, virtually all of the cloud of radioactive debris and fine dust will climb into the stratosphere. Worldwide Effects of Nuclear War: Some Perspectives The peak occurred in 1961-62, when a total of 340 megatons were detonated in the atmosphere by the United States and Soviet Union. Worldwide Effects of Nuclear War: Some Perspectives It has been estimated that as much as 5,000 tons of nitric oxide is produced for each megaton of nuclear explosive power. Worldwide Effects of Nuclear War: Some Perspectives The world's largest nuclear detonation, set off in 1962 by the Soviet Union, had a yield of 58 megatons--equivalent to 58 million tons of TNT. Worldwide Effects of Nuclear War: Some Perspectives With similar uncertainty, it is possible to estimate that the induction of cancers would range from 75 to 300 cases per megaton for each billion people in the post-test generation. Worldwide Effects of Nuclear War: Some Perspectives |
| 随便看 |
英语例句辞典收录了117811条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。