| 单词 | nuclear fission |
| 例句 | The roots of the meeting had been planted more than two years earlier by the discovery of nuclear fission. Big Science 2015-07-07T00:00:00Z The refugee Hungarian physicist had placed the very notion of atomic weaponry on the federal government’s radar in 1939, when he prompted Albert Einstein to alert Franklin Roosevelt to the military potential of nuclear fission. Big Science 2015-07-07T00:00:00Z “Oh, this is cool, this is pretty, this is funny — I’m gonna learn about nuclear fission.” Back-to-School Wisdom From the Creators of Your Favorite Children’s Books 2017-08-30T04:00:00Z The other such production, however, draws laughter and aims for an audience that probably worries more about long division than about nuclear fission. ‘Cat Kid Comic Club’ Review: Tiny Frogs, Big Imaginations 2023-08-03T04:00:00Z Some of her paintings depicted invented characters inspired by Kafka and images suggesting nuclear fission and the atom bomb. June Wayne, Painter and Printmaker, Dies at 93 2011-08-28T00:23:03Z When I attended the University Of Chicago before the invention of nuclear fission, there were two identities: Male, and, for three students, female. BREAKING: “Cultural appropriation is not just appropriate — it is my birthright!”: The Greatest Living American Writer 2016-09-29T04:00:00Z Unlike nuclear fission — which splits big nuclei into smaller ones and is used in today’s nuclear power plants — fusion occurs when two small nuclei merge to become one larger one, releasing energy. The Miracle Cure for All Our Energy Woes? 2021-08-19T04:00:00Z One technology he never went into, although popular myth suggests otherwise, is nuclear fission. Peter Forbes: rereading Einstein's collected papers 2013-06-21T09:00:02Z But N. David Charkes is wrong about who discovered nuclear fission. Letters to the Editor 2018-03-02T05:00:00Z Another is using heat created by nuclear fission. Looking Again at the Chernobyl Disaster 2019-04-03T04:00:00Z Fatefully, the Fermis sailed from Italy the same week that two Berlin radiochemists discovered nuclear fission. A Remarkable Man Among Remarkable Men and Women 2018-01-24T05:00:00Z It works by taking pairs of light atoms and forcing them together - the opposite of nuclear fission, where heavy atoms are split apart. UK's nuclear fusion site ends experiments after 40 years 2023-10-13T04:00:00Z Small modular reactors are nuclear fission reactors that are smaller than conventional ones and thought to be less expensive to build than traditional plants, which the prime minister called the "nuclear technologies of the future". Rishi Sunak hints Wylfa could be preferred nuclear site 2023-09-28T04:00:00Z And then there is Lise Meitner, the co-discoverer, with Otto Hahn, of nuclear fission. Rosalind Franklin Deserves a Posthumous Nobel Prize for Co-discovering DNA Structure 2023-09-24T04:00:00Z They called the process nuclear fission, a word Frisch borrowed from a biologist friend who used it to describe cell division. How Antisemitism and Professional Betrayal Marred Lise Meitner’s Scientific Legacy 2023-09-14T04:00:00Z Dual Fluid Energy is pursuing a nuclear fission based on “liquid fuel and lead coolant” that it claims could produce emission-free electricity, hydrogen and synthetic fuels “at costs below those of fossil fuels.” Rwanda will host a company’s 1st small-scale nuclear reactor testing carbon-free energy approach 2023-09-13T04:00:00Z But today, we're sharing the story of one who refused to have anything to do with it: physicist Lise Meitner, the scientist whose work was key to the discovery of nuclear fission. She Cracked the Mystery of How to Split the Atom, But Someone Else Got the Nobel Prize for the Discovery 2023-09-07T04:00:00Z We will be talking about what those letters reveal about the who, what, where, when and how of the discovery of nuclear fission. They Remembered the Lost Women of the Manhattan Project So That None of Us Would Forget 2023-08-31T04:00:00Z It has the potential to generate vast quantities of energy without the environmental concerns that plague fossil fuels and with far fewer of the radioactive risks associated with traditional nuclear fission reactors. Math’s ‘Hairy Ball Theorem’ Has Surprising Implications 2023-08-18T04:00:00Z Marissa Moss: And he makes this big announcement at this conference that nuclear fission has occurred, and everybody leaps up and the reporters are going, what happened? How Antisemitism and Professional Betrayal Marred Lise Meitner’s Scientific Legacy 2023-09-14T04:00:00Z About three decades later in 1938, Lise Meitner — along with her colleague, Otto Hahn, and her nephew, Otto Frisch — discovered nuclear fission, which would later be used by J. Robert Oppenheimer. Eclipsed genius: Despite modest progress, sexism and racism persist in science 2023-08-12T04:00:00Z Nuclear reactors use nuclear fission to heat water and produce steam that generates electricity without emitting carbon dioxide or pollutants while operating. Biden’s climate change agenda adds nuclear to the mix but it’s still second fiddle to wind and solar 2023-08-08T04:00:00Z BWX Technologies, based in Lynchburg, Va., will build the nuclear fission reactor at the heart of the engine. NASA Seeks a Nuclear-Powered Rocket to Get to Mars in Half the Time 2023-07-26T04:00:00Z The Manhattan Project would not have been possible without the work of physicist Lise Meitner, who discovered nuclear fission. Female Physicists Aren’t Represented in the Media—And This Lack of Representation Hurts the Field 2023-07-17T04:00:00Z After the discovery of nuclear fission, Meitner grappled with its implication: the advent of nuclear weapons and who would get credit for the discovery of nuclear fission. How Antisemitism and Professional Betrayal Marred Lise Meitner’s Scientific Legacy 2023-09-14T04:00:00Z That’s a process in which all control rods are inserted into the reactor core to stop the nuclear fission reaction and generation of heat and pressure. U.N. nuclear chief says large Ukraine atomic power plant held by Russia faces ‘dangerous situation’ 2023-06-13T04:00:00Z That means control rods have been inserted into the reactor core to stop the nuclear fission reaction and generation of heat and pressure. Last Reactor at Zaporizhzhia Nuclear Plant Shut Down After Dam Collapse 2023-06-10T04:00:00Z Construction of the chemical treatment plant was stopped by former President Barack Obama’s energy secretary, Steven Chu, amid allegations that the process could lead to explosions of hydrogen gas and spontaneous nuclear fission. A Poisonous Cold War Legacy That Defies a Solution 2023-05-31T04:00:00Z The unit of Atlanta-based Southern Co. said operators reached self-sustaining nuclear fission inside the reactor at Plant Vogtle, southeast of Augusta. Georgia nuclear plant begins splitting atoms for first time 2023-03-06T05:00:00Z Meitner and Hahn's discovery of nuclear fission also opened up the possibility of an atomic bomb. How Antisemitism and Professional Betrayal Marred Lise Meitner’s Scientific Legacy 2023-09-14T04:00:00Z This is achieved by using centrifuges - machines which spin at supersonic speeds - to separate out the most suitable isotope for nuclear fission, called U-235. Iran nuclear: IAEA inspectors find uranium particles enriched to 83.7% 2023-03-01T05:00:00Z Hamilton’s team will investigate how neutrons move around and affect the chain reaction of nuclear fission, as well as how heat from fission moves through the system. New Exascale Supercomputer Can Do a Quintillion Calculations a Second 2023-02-09T05:00:00Z Strontium-9 and cesium-137, radioactive products of nuclear fission, have turned up in wildly varying concentrations, raising questions about how well the filtration system works. Despite opposition, Japan may soon dump Fukushima wastewater into the Pacific 2023-01-23T05:00:00Z It’s also possible that nations will choose to invest more in nuclear fission, which is used in today’s nuclear power plants, to phase out fossil fuels. Opinion | Betting on Fusion Energy Shows Our Children We Care About Them 2022-12-16T05:00:00Z And unlike nuclear fission, which requires politically troublesome and hazardous uranium, nuclear fusion relies on lightweight elements, like hydrogen, which can be extracted from water. A breakthrough in nuclear fusion could produce "near-limitless energy" 2022-12-14T05:00:00Z Such fusion bombs are far more powerful than the atomic bombs that employ nuclear fission, in which atoms are split rather than fused. U.S. announces milestone on fusion energy, sparking hopes for clean power 2022-12-13T05:00:00Z It is the opposite of nuclear fission, in which heavy atoms are split apart. What is nuclear fusion and how does it work? 2022-12-13T05:00:00Z It is the opposite of nuclear fission, where heavy atoms are split apart. US scientists announce fusion energy breakthrough 2022-12-13T05:00:00Z Since fusion does not lend itself to runaway reactions or nuclear proliferation, it is reasonable to expect that it will be less expensive than nuclear fission power, once the technology is mature. Opinion | Betting on Fusion Energy Shows Our Children We Care About Them 2022-12-16T05:00:00Z It’s also a process that doesn’t produce the radioactive waste of nuclear fission, Kammen said. EXPLAINER: Why fusion could be a clean-energy breakthrough 2022-12-12T05:00:00Z Hundreds of nuclear fission power plants around the world attest to the fact that controlled fission is practical and, at least in the short term, economical, as seen in Figure 32.24. College Physics for AP Courses 2015-08-12T00:00:00Z Nuclear power stations currently use nuclear fission to generate electricity. What is nuclear fusion and how does it work? 2022-12-13T05:00:00Z Element 109 was named in honor of Lise Meitner, who discovered nuclear fission, a phenomenon that would have world-changing impacts; Meitner also contributed to the discovery of some major isotopes, discussed immediately below. Chemistry 2019-02-14T00:00:00Z Each of these pieces continued to fragment further until they became the present atoms of the universe, created in a vast nuclear fission. Astronomy 2016-10-13T00:00:00Z Most electrical plants boil water by burning coal or natural gas, or through nuclear fission; the resulting steam then spins a turbine. Can Natural Gas Be Used to Create Power With Fewer Emissions? 2022-06-21T04:00:00Z About 16% of the world's electrical power is generated by controlled nuclear fission in such plants. College Physics for AP Courses 2015-08-12T00:00:00Z The lower level of radiative waste produced by the process compared to nuclear fission is also much easier to handle and store. What is nuclear fusion and how does it work? 2022-12-13T05:00:00Z Material that can sustain a nuclear fission chain reaction is said to be fissile or fissionable. Chemistry 2019-02-14T00:00:00Z In any nuclear reactor, the purpose is to maintain a nuclear fission chain reaction in the fuel that generates heat and also additional neutrons, which are used to propagate the chain reaction. The Risks of Russian Attacks near Ukraine Nuclear Power Plants 2022-03-04T05:00:00Z Uranium is used as a fuel inside reactors to achieve nuclear fission to boil water and generate steam that spins turbines to generate electricity. EXCLUSIVE U.S. utilities push White House not to sanction Russian uranium 2022-03-02T05:00:00Z This level of calculation capacity will help with challenges ranging from simulating the effects of new drugs and nuclear fission to forecasting weather and climate change, it said. France's Atos aims to double market share in supercomputing by 2026 2022-02-16T05:00:00Z Unlike nuclear fission—the process used in all nuclear power plants today—fusion does not use or generate large quantities of long-lived radioactive materials. U.S. Project Reaches Major Milestone toward Practical Fusion Power 2022-02-02T05:00:00Z Energy from the nuclear fission reactions in the core heats water in a closed, pressurized system. Chemistry 2019-02-14T00:00:00Z Yet more than 60 years into the space age, nuclear fission for spaceflight remains mostly a dream. NASA’s ‘Nuclear Option’ May Be Crucial for Getting Humans to Mars 2022-01-27T05:00:00Z BOISE, Idaho — If anyone has a good idea on how to put a nuclear fission power plant on the moon, the U.S. government wants to hear about it. ‘Vital next step’: NASA seeks ideas for nuclear reactor on moon 2021-11-19T05:00:00Z Small modular reactors are nuclear fission reactors but are smaller than conventional ones. Rolls-Royce backed to develop nuclear reactors 2021-11-08T05:00:00Z When Rose uses the faulty bathroom, Hazel, who understands the inner workings of nuclear fission, anxiously asks if she did “number one or a number two?” Review: The apocalypse has arrived in Lucy Kirkwood's gripping 'The Children' 2021-11-08T05:00:00Z Naturally occurring uranium contains only 0.72% of 235U, the kind of uranium that is “fissile,” that is, capable of sustaining a nuclear fission chain reaction. Chemistry 2019-02-14T00:00:00Z Like traditional nuclear fission power, which splits atoms, fusion energy would not consume fossil fuel and would not produce greenhouse gases. Massachusetts Start-Up Hopes to Move a Step Closer to Commercial Fusion 2021-08-10T04:00:00Z Experts said that suggested fuel rods broke and leaked radioactive gas produced during nuclear fission. China says nuclear fuel rods damaged, no radiation leak 2021-06-15T04:00:00Z Instead of collapsing, such heavy nuclei are prone to splitting, a reaction known as nuclear fission. Mystery of Spinning Atomic Fragments Solved at Last 2021-02-24T05:00:00Z Enriched uranium is produced by feeding uranium hexafluoride gas into centrifuges to separate out the most suitable isotope for nuclear fission, called U-235. Iran nuclear crisis: Tehran to enrich uranium to 20%, UN says 2021-01-01T05:00:00Z A thermonuclear weapon such as a hydrogen bomb contains a nuclear fission bomb that, when exploded, gives off enough energy to produce the extremely high temperatures necessary for fusion to occur. Chemistry 2019-02-14T00:00:00Z Like a conventional nuclear fission power plant that splits atoms, a fusion plant would not burn fossil fuels and would not produce greenhouse-gas emissions. Compact Nuclear Fusion Reactor Is ‘Very Likely to Work,’ Studies Suggest 2020-09-29T04:00:00Z “And of course nuclear fission is something you can’t see, radioactivity you can’t see. Therefore it’s really challenging to try to show it on the screen.” Why it's time for scientists to become cinematic superheroes 2020-07-30T04:00:00Z “It’s really an important advance in our understanding of nuclear fission.” Mystery of Spinning Atomic Fragments Solved at Last 2021-02-24T05:00:00Z The isotopes were “certainly nuclear fission products, most likely from a civil source”, it said. Russia denies nuclear incident after international body detects isotopes 2020-06-29T04:00:00Z The explosive, when detonated, would compress the warhead’s plutonium pit to set off a nuclear fission explosion, which in turn would trigger an even more powerful fusion explosion. Lawsuit alleges scientific misconduct at U.S. nuclear weapons lab 2020-06-24T04:00:00Z Fast reactors and conventional reactors each produce energy through nuclear fission. Compact fast reactor proposed at east Idaho nuclear site 2020-06-18T04:00:00Z The control rods absorb neutrons, which stops the nuclear fission process. Nuclear power plant north of New York City to start shutdown 2020-04-29T04:00:00Z They focused on the gamma rays released after nuclear fission, which encoded information on the spin of the resulting fragments. Mystery of Spinning Atomic Fragments Solved at Last 2021-02-24T05:00:00Z Examples of things which made life difficult are all around us: comet impacts, ice ages, weapons, plagues, nuclear fission, computers, sex, sin and death. Scientific Rebel Freeman Dyson Dies 2020-02-28T05:00:00Z Like Rona’s previous mentor, Otto Hahn would also receive a Nobel Prize long after she left the lab, this time for the discovery of nuclear fission, the reaction that fuels the atomic bomb. Elizabeth Rona, the wandering polonium woman, changed radiation science forever 2020-01-05T05:00:00Z Bohr caused a stir when he announced the Germans’ success with nuclear fission. Perspective | Making history — and smashing atoms — in a leafy part of Chevy Chase, D.C. 2019-09-07T04:00:00Z Powering a missile is a plausible use for the huge amount of energy generated by nuclear fission, says Corkhill. How nuclear scientists are decoding Russia’s mystery explosion 2019-08-29T04:00:00Z All four particles form from radioactive gasses released during nuclear fission, outside experts said, and might be expected to drift far from the site of their release. Russia Identifies 4 Radioactive Isotopes From Nuclear Accident 2019-08-26T04:00:00Z This isotype is a fissile material, which is capable of sustaining a nuclear fission chain reaction. Iran holds back on threat to breach nuclear deal 2019-06-27T04:00:00Z Meanwhile, per capita carbon emissions in France , which generates three-quarters of its electricity from nuclear fission, are roughly half those of Germany. Opinion | If Germany wants to achieve climate neutrality, it needs nuclear power 2019-06-03T04:00:00Z He was born in Tennessee and worked in nuclear fission, before being transferred to a missile project, Polaris, in California. The Wild West Meets the Southern Border 2019-06-03T04:00:00Z His government declared lithium to be a “strategic” resource because of its use in nuclear fission. Chile, once the world's lithium leader, loses ground to rivals 2019-05-30T04:00:00Z “It strikes me that history, and proper methods of teaching it, are even more important at present than endocrinology and nuclear fission,” he wrote in a letter to his parents. David Brion Davis, Pulitzer-winning historian who reshaped study of slavery, dies at 92 2019-04-16T04:00:00Z The level of cesium-137, a byproduct of nuclear fission, in seawater was just four-tenths as high as traces of the isotope naturally found in the Pacific Ocean. Fukushima contaminants found as far north as Alaska's Bering Strait 2019-03-28T04:00:00Z In a twist of historical fate, Adolf Hitler’s rise coincided with major breakthroughs in particle physics, including the theorization of nuclear fission by Lise Meitner and Otto Frisch in December 1938. Atomic bombs through wars hot and cold 2018-10-14T04:00:00Z Our physiological activity is not a closed, well-defined system like rocket propulsion or nuclear fission. How to discover a new drug (and why it’s so difficult) 2018-10-13T04:00:00Z Dmitri Mendeleev, creator of the periodic table of elements, and Lise Meitner, who discovered nuclear fission, should have won Nobels but did not. Why Nobel prizes fail 21st-century science 2018-09-30T04:00:00Z “Ultimately on a planet with 10 billion people, some amount of large, convenient, affordable, safe baseload power — like we get from nuclear fission, or fusion — would be just hugely beneficial,” Kammen said. Next-gen nuclear is coming, if we want it 2018-07-21T04:00:00Z Second, credit for the discovery of nuclear fission was, in my opinion, more complex than Fouquet implies and not attributable solely to physicist Lise Meitner. Pioneering women in energy physics 2018-06-12T04:00:00Z In 1939 Bohr and Wheeler published the first paper to explain nuclear fission in quantum terms. Do Our Questions Create the World? 2018-06-09T04:00:00Z The Kilopower project uses nuclear fission — the process in which an atom is split, releasing a tremendous amount of heat energy. NASA looks to send a small nuclear reactor to the moon and Mars 2018-05-25T04:00:00Z But he fails to mention the women who helped to revolutionize the field — from discoverer of nuclear fission Lise Meitner to solar-power pioneer Mária Telkes. The triumphs and tragedies in energy history 2018-05-07T04:00:00Z “It feels like being the scientist who figured out nuclear fission and then discovers it’s being used as a weapon for war.” Woman behind 'incel' says angry men hijacked her word 'as a weapon of war' 2018-04-25T04:00:00Z The reaction also does not create greenhouse gases or produce hazardous radioactive waste of the sort made by conventional nuclear fission reactors. Nuclear fusion on brink of being realised, say MIT scientists 2018-03-09T05:00:00Z There is nuclear fission which produces no CO2 and with modern breeder reactor technology will produce little radioactive waste. Coal Country Divides Over an Unrepentant Boss’s Senate Bid 2018-02-26T05:00:00Z The early signatures were familiar to the Neána, and faintly worrying: nuclear fission detonations, followed seven years later by fusion explosions. Aliens watch the rise of humanity in an excerpt from Peter F. Hamilton’s sci-fi novel, Salvation 2018-02-07T05:00:00Z Department of Energy, at a news conference in Las Vegas, detailed the development of the nuclear fission system under NASA’s Kilopower project. U.S. tests nuclear power system to sustain astronauts on Mars 2018-01-18T05:00:00Z Her work helped discover and build a working understanding of nuclear fission, which led to a Nobel Prize for Otto Hahn. Women in Science are a Force of Nature 2017-12-13T05:00:00Z Nobel laureate Enrico Fermi contributed to the discovery of nuclear fission and was part of the Manhattan Project, which built the first atomic bombs. The doubly dextrous physics of Enrico Fermi The release of these findings to the academic community immediately inspired many nuclear scientists to investigate the nuclear fission process further. Atomic Age Began 75 Years Ago with the First Controlled Nuclear Chain Reaction 2017-12-03T05:00:00Z Together, Bohr and Wheeler developed a model for the activation energy of nuclear fission that predicted which isotopes of uranium and plutonium would most easily be fissile. This Man Was Einstein and Bohr's Relationship Counselor 2017-11-13T05:00:00Z Department of Energy, at a news conference in Las Vegas, detailed the development of the nuclear fission system under NASA’s Kilopower project. U.S. tests nuclear power system to sustain astronauts on Mars 2018-01-18T05:00:00Z On the other hand, nuclear fission also promised a reliable source of energy that was once optimistically predicted to be 'too cheap to meter'. How science transformed the world in 100 years 2017-10-24T04:00:00Z An obvious example is the 1938 Nobel Prize in Physics, awarded to Enrico Fermi for work that led to the discovery of nuclear fission. The Long Nuclear History Behind the 2017 Nobel Peace Prize 2017-10-06T04:00:00Z The quest to understand delayed neutron emission and nuclear fission continues in modern nuclear physics laboratories. Atomic Age Began 75 Years Ago with the First Controlled Nuclear Chain Reaction 2017-12-03T05:00:00Z Meitner's long-term collaborator Otto Hahn was awarded the chemistry prize for nuclear fission in 1944, which she did not share, despite being nominated in previous and subsequent years. Nobel Prize: Where are the women? 2017-10-05T04:00:00Z To set off an H-bomb, a nuclear fission blast is used as a detonator. Known Unknowns: The Dangers of North Korea's H-Bomb Threat 2017-10-02T04:00:00Z One discovery that shifted our view of the world in two distinctly divergent directions was nuclear fission. How science transformed the world in 100 years 2017-10-24T04:00:00Z In 1944 the Nobel Prize in chemistry was awarded to Hahn alone for the remarkable discovery of nuclear fission. Honoring a Pioneering Woman in Physics 2017-08-29T04:00:00Z In addition, researchers are trying to predict new nuclei where nuclear fission might be possible. Atomic Age Began 75 Years Ago with the First Controlled Nuclear Chain Reaction 2017-12-03T05:00:00Z On this date in 1946, a French designer made bathing suit history — and helped popularize a trend of linking women to the devastating power of nuclear fission. North Korea, New Jersey, Uber: Your Wednesday Briefing 2017-07-05T04:00:00Z On this day in 1946, a French designer made bathing suit history — and helped popularize a trend of linking women to the devastating power of nuclear fission. G-20, Wimbledon, Tour de France: Your Wednesday Briefing 2017-07-05T04:00:00Z On this day in 1946, a French designer made bathing suit history — and helped popularize a trend of linking beautiful women to the devastating power of nuclear fission. Narendra Modi, North Korea, Vladimir Putin: Your Wednesday Briefing 2017-07-04T04:00:00Z She and Frisch coined the term nuclear fission for the process. Honoring a Pioneering Woman in Physics 2017-08-29T04:00:00Z Together, the new experimental and theoretical studies will give us a much better understanding of nuclear fission, which can help improve the performance and safety of nuclear reactors. Atomic Age Began 75 Years Ago with the First Controlled Nuclear Chain Reaction 2017-12-03T05:00:00Z One option: small nuclear fission reactors, which work by splitting uranium atoms to generate heat, which is then converted into electric power. NASA Seeks Nuclear Power for Mars 2017-06-30T04:00:00Z Fusion energy avoids many of the thorny political problems — the fuel scarcity, terror risk, meltdowns, waste disposal — that plague its cousin, nuclear fission. Is fusion energy humanity’s last hope? 2017-06-10T04:00:00Z The discovery, called nuclear fission, led to a global race to split heavy atoms in chain reactions. U.S. Nuclear History Offers Clues to North Korea’s Progress 2017-05-22T04:00:00Z Still others believed both scenarios were equally plausible and the outcome would depend upon how judiciously we regulated new technologies, nuclear fission being a powerful example, so that they reduced, rather than increased, human suffering. Learning to Love Our Robot Co-Workers 2017-02-23T05:00:00Z Think of innovation as a pipeline that starts with basic discoveries of things like microwaves or nuclear fission. Is Engine of Innovation in Danger of Stalling? 2016-11-20T05:00:00Z Very quickly after the start of WWII, the Allies were thinking, We can harness nuclear fission to do one of two things: create power or make a bomb. Inside the Daring Mission That Thwarted a Nazi Atomic Bomb That’s because merging nuclei is far more difficult to manage than, say, splitting nuclei, as we do in nuclear fission reactors. Is fusion energy humanity’s last hope? 2017-06-10T04:00:00Z That radioactive isotope is, along with cesium-137, commonly produced during nuclear fission and generates most of the heat and penetrating radiation from nuclear waste. AP Exclusive: Test finds Chernobyl residue in Belarus milk 2016-04-25T04:00:00Z Weeks after Hiroshima felt the unforgiving force of nuclear fission, nature compounded the city’s misery. Story of cities #24: how Hiroshima rose from the ashes of nuclear destruction 2016-04-18T04:00:00Z A dirty bomb combines nuclear material with conventional explosives to contaminate an area with radiation, in contrast to a nuclear weapon, which uses nuclear fission to trigger a vastly more powerful blast. Exclusive: Radioactive material stolen in Iraq raises security fears 2016-02-17T05:00:00Z Advocates of nuclear fusion acknowledge the technology is probably decades away but argue that it could replace fossil fuels and conventional nuclear fission reactors. German scientists to conduct nuclear fusion experiment 2016-02-03T05:00:00Z On Thursday, South Korea’s defence ministry said it did not believe that North Korea’s test of an enhanced nuclear fission device was successful, according to the Yonhap news agency. North Korea nuclear test: Seoul to resume cross-border propaganda 2016-01-06T05:00:00Z An atomic bomb uses nuclear fission, or the splitting of atoms, to create its energy. Questions and answers about whether North Korea's nuclear claim raises threat of war 2016-01-06T05:00:00Z The first stage is based on nuclear fission—the splitting of atoms --and the second on nuclear fusion, which combines atoms, smashing them together and unleashing more energy. North Korea Hydrogen-Bomb Test Would Signal Dangerous New Phase 2016-01-06T05:00:00Z Whatever your starting material, the significance of an H-bomb is that it uses a process called nuclear fusion and this delivers a vastly more powerful explosion than atomic bombs, which use nuclear fission. North Korea 'H-bomb test': What do we know? - BBC News 2016-01-06T05:00:00Z Compared with nuclear fission, which produces huge amounts of radioactive material that will be around for thousands of years, the waste from nuclear fusion would be negligible, he said. German scientists to conduct nuclear fusion experiment 2016-02-03T05:00:00Z "Lise Meitner was really the chemist who spotted nuclear fission but she was never really recognised for it because she was Jewish and a woman," says Sella. Who, What, Why: How do elements get their names? - BBC News 2016-01-04T05:00:00Z Some investments yielded little, including the billions of dollars that were sunk into synfuels and nuclear fission. Americans weaned themselves off oil in the 1970s. We can do it again | Michael L Ross 2015-12-11T05:00:00Z Fusion also gets mixed up, for obvious reasons, with nuclear fission, which is the kind of nuclear power we have now, though in fact they’re very different animals. Inside the Quest for Fusion, Clean Energy’s Holy Grail 0002-11-29T05:00:00Z The reactor “scrammed” on Christmas Day 2014, dropping control rods into the reactor’s fuel core to halt the nuclear fission reaction. Nuclear regulator: Simulator problems hurt shutdown response 2015-09-12T04:00:00Z Fusion is a basically a process through which the heated ions collide and fuse together by releasing an enormous amount of energy which is almost 4 times the intensity of a nuclear fission reaction. The ‘Fusion Engine’ Could Become a Reality Before 2020 2015-08-27T04:00:00Z A nuclear reactor generates power with nuclear fission, the decaying of unstable materials like uranium contained in fuel rods. Why is Japan restarting Sendai reactor? - BBC News 2015-08-11T04:00:00Z Forty-seven seconds later, a powerful implosion forced its plutonium core to compress from the size of a grapefruit to the size of a tennis ball, generating a nearly instantaneous chain reaction of nuclear fission. “Most of Nagasaki’s residents had no warning”: The day we dropped the bomb 2015-08-06T04:00:00Z It produces three to four times as much power as nuclear fission. Inside the Quest for Fusion, Clean Energy’s Holy Grail 0002-11-29T05:00:00Z Tacke is also credited with being the first person to open up the idea of nuclear fission. The women who science forgot - BBC News 2015-06-18T04:00:00Z Lise Meitner, when her male colleagues got all the glory for her work on nuclear fission. Nobel Scientist's Sexist Remarks Provoke Outrage 2015-06-10T04:00:00Z For the long haul, the authors place faith in a new generation of solar cells combined with efficient energy-storage technologies, advanced nuclear fission — and even fusion energy. Decoupled ideals 2015-04-20T04:00:00Z This is not the same as nuclear fission, a more complex process used in power plants to split radioactive material and release a much larger amount of energy. NASA’s dark materials 2015-04-01T04:00:00Z Nuclear fusion is the reverse of nuclear fission: instead of splitting atoms, you’re squashing small ones together to form bigger ones. Inside the Quest for Fusion, Clean Energy’s Holy Grail 0002-11-29T05:00:00Z Lise Meitner's work in nuclear physics led to the discovery of nuclear fission - where atomic nuclei split in two. The women who science forgot - BBC News 2015-06-18T04:00:00Z It will continue to drive innovation in new technology for power generation, including smart grid, solar panels, biomass, unconventionals, clean coal, fuel cells and, ultimately, nuclear fission for the next-generation nuclear plants. How China Is On The Silk Road To A Clean Energy Future 2015-03-06T05:00:00Z Unlike nuclear fission, fusion energy is still finding its feet. The U.S. Will Spend $5 Billion on Energy Research in 2015 – Where Is It Going? 2015-03-05T05:00:00Z Just a couple of pounds underwent nuclear fission—the splitting of atoms—above Hiroshima. Nuns and Nuclear Security 2015-02-28T05:00:00Z Technological advances have made nuclear fission safer, but the risk of a reactor leak can never be discounted completely. Nuclear power: The future or the past? 2015-02-26T05:00:00Z Central thermal power plants—nuclear fission, gas-combined-cycle, coal-fired—are not the technology to beat. Even If Lockheed Has Made a Breakthrough in Fusion Power, the Hard Part Will Be the Economics 2015-01-16T05:00:00Z Tritium is a radioactive form of hydrogen that occurs in nature and also as a byproduct of nuclear fission. Tritium leak reported at nuclear plant in northern Alabama 2015-01-12T05:00:00Z Because I understand food about as well as I understand nuclear fission, I partnered with the amazingly talented Kat Odell from our sister-site Eater. Top Shelf: Taste test 2014-12-05T05:00:00Z But, at the same time, attention turned to more peaceable uses for nuclear fission. The element that causes arguments 2014-10-18T04:00:00Z In the simplest terms, nuclear fission breaks a single atom into two whereas nuclear fusion combines two atoms into one. Lockheed Martin Claims Fusion Breakthrough That Could Change World Forever 2014-10-15T04:00:00Z In 1946, a year after the U.S had dropped atomic bombs on Japan, it was already evident that nuclear fission could be used not only for bombs but for electricity production as well. Molten Salt Nuclear Reactors: Part Of America's Long-TermEnergy Future? 2014-09-22T04:00:00Z The illness would be the post-traumatic stress disorder suffered by a survivor of the Indianapolis, and the technology would be nuclear fission. Will Self: 'I had planned to write Jaws without the shark' 2014-08-22T04:00:00Z In a letter in 1961, he compared his discoveries to nuclear fission; just as fission threatens our fundamental physical integrity, he said, so do psychedelics “attack the spiritual center of the personality, the self.” Tripping in LSD's Birthplace: A Story for “Bicycle Day” 2014-04-19T12:41:38Z Meitner's contribution was the discovery of nuclear fission, the splitting of atoms that led to the development of nuclear energy and atomic weapons. 15 Works of Art Depicting Women in Science 2014-03-07T21:00:00Z In 1966, Dr. Huizenga received the government’s Lawrence Award for outstanding accomplishments in illuminating the intricacies of nuclear fission, the fracturing of atoms into pieces. John R. Huizenga, Physicist at Fore of Nuclear Era, Dies at 92 2014-01-30T01:07:18Z Armstrong was then sent to work on the prototype nuclear reactor in the desert in Idaho, where he and the others spent nine months learning about nuclear fission. Spending months under water 2014-01-21T14:23:43Z He’s spent the past year, since his first inclusion on the Forbes 30 Under 30, designing modular, fail-safe, small-scale nuclear fission reactors that would be powered by nuclear waste. The Stars Of Forbes' 30 Under 30 In Energy And Industry 2014-01-06T12:37:00Z From biology, from the process whereby cells divide, binary fission, they borrowed a name for the new reaction—nuclear fission. Why Did We Make The Atomic Bomb? 2013-12-07T19:00:00Z Some created as a result of nuclear fission, such as strontium and caesium, are unstable and emit harmful radiation until they decay to a stable state. Soviets performed nuclear blasts at Siberian oilfield to be shared with China 2013-10-25T10:29:24Z Nuclear fusion is almost the inverse of nuclear fission, the process that drives conventional nuclear reactors. Can Fusion Energy Achieve a Breakthrough? 2013-10-15T14:45:00.413Z The Davisson-Germer experiment, the discovery of nuclear fission and the Pound-Rebka experiment are but three instances of the triumph of simple, small science. Ernest Rutherford, master of simplicity 2013-08-30T21:45:02.847Z On the other hand, Japan saw its greenhouse gas emissions rise by 70 million metric tons, thanks to a switch from generating electricity via nuclear fission to burning natural gas for that purpose. Who Is Fooling Who When It Comes to Combating Climate Change? 2013-06-11T18:45:00.310Z Fermi put his studies on hold for three years and emerged in 1924 with a complete understanding of nuclear fission. A time for peace 2013-05-29T17:21:03.883Z The plant separates two forms of uranium that exist in nature, chemically identical but differing in their ability to sustain nuclear fission, through a process called enrichment. USEC to Shut Uranium-Enrichment Plant in Kentucky 2013-05-25T02:45:49Z That too was the wild-eyed futuristic dream, of a world powered by nuclear fission, made secure by it and liberated by it. The digital revolution? It's all a gift to the power of the state 2013-05-15T06:00:40Z The discovery of the neutron was a watershed in the history of science; since it led directly to nuclear fission and atomic bombs, in one sense it separated history into two stark periods. Ernest Rutherford, master of simplicity 2013-08-30T21:45:02.847Z Its breakthroughs ran the gamut from helicopters to computing to nuclear fission. Globalism and Technology: A Hidden Misconception That Dooms the U.S. Economy 2013-03-31T08:47:56Z If the operators have to charge double the standard rate, then tough – it would expose the myth that nuclear fission is an economically competitive way of generating electricity. Letters: Nuclear power's place in a safer, cleaner Britain 2013-02-24T21:00:05Z In 1939, while tramping across the snow from Princeton University to the Institute for Advanced Study, Bohr realized that it was uranium-235 which was responsible for nuclear fission. Physics Nobel Prizes and second acts 2013-02-21T23:15:05.887Z An equally expensive and widely unpopular alternative is construction of many new nuclear fission plants for generation of electricity or production of secondary fuels. Dot Earth Blog: Roger Revelle's 1980 Discussion of CO2 and Climate Risks 2012-05-31T23:07:20Z Unlike today's nuclear fission, it does not generate power by splitting atoms and leaving behind dangerous waste. Iranian team to collaborate with US company on nuclear fusion project 2012-05-25T17:59:25Z In an energy-hungry world, nuclear fission and fusion are often mentioned as alternatives to fossil fuels. Instant Egghead - What's the Difference Between Fission and Fusion? 2012-05-02T16:45:00.443Z Iodine 131, found in nuclear fission products, is not naturally occurring and is not naturally found in oceans. Radioactive Iodine from Fukushima Found in California Kelp 2012-03-30T16:45:00.263Z In November, Tepco said it detected xenon, signs of nuclear fission, in gases taken from the No. 2 reactor, raising concerns that radiation emissions may increase. Tepco Injects Boric Acid Into Reactor as Temperatures Rise 2012-02-07T03:41:02Z The reason why is basic: renewables work by harvesting diffuse energy like sunlight and wind over large areas, whilst nuclear fission delivers prodigious amounts of energy from tiny amounts of source material. The Smart Way to Play God with Earth's Limited Land 2012-01-20T22:15:00.427Z The company also said separately on Friday that possible naturally occurring nuclear fission in one of the damaged reactors would not delay its cleanup plan. Tepco gets $11.5 billion for compensation scheme 2011-11-04T08:30:58Z The discovery of xenon, announced yesterday, at the plant was caused by “natural” nuclear fission, Junichi Matsumoto, a general manager at the company known as Tepco, said today at a press briefing in Tokyo. Xenon at Fukushima Isn’t From Critical Reaction, Tepco Says 2011-11-03T05:35:27Z The Nuclear and Industrial Safety Agency said that small amounts of Xenon-133 and 135, both by-products of nuclear fission, were detected in a survey of the reactor. Japan Detects Xenon Release at Plant 2011-11-03T01:28:19Z Tepco said it may have found xenon, which is associated with nuclear fission, while examining gases taken from the reactor, according to an e-mailed statement today. Tepco Detects Nuclear Fission at Damaged Fukushima Power Station 2011-11-02T05:51:57Z Just how much energy nuclear fission releases is described by Einstein’s famous equation E=MC2, where E is energy, M is mass and C the speed of light, about 300 million metres per second. The Smart Way to Play God with Earth's Limited Land 2012-01-20T22:15:00.427Z Xenon, a substance produced as a byproduct of nuclear fission, was detected from Daiichi's No. 2 reactor earlier this week. Tepco gets $11.5 billion for compensation scheme 2011-11-04T08:30:58Z The occurrence of the gas, which is associated with nuclear fission, was confirmed yesterday by the Japan Atomic Energy Agency. Xenon at Fukushima Isn’t From Critical Reaction, Tepco Says 2011-11-03T05:35:27Z Tepco, as the company is known, said in an e-mailed statement that it yesterday detected xenon, which is associated with nuclear fission, when examining gases taken from the reactor. Tepco Says Nuclear Fission Possible at Fukushima Plant 2011-11-02T01:03:14Z Even if Tepco’s analysis is correct, nuclear fission would be taking place in a “very restricted part” of the reactor, said Koganeya. Tepco Detects Nuclear Fission at Damaged Fukushima Power Station 2011-11-02T05:51:57Z Nor, unlike fusion’s cousin, nuclear fission, does the process produce much in the way of radioactive waste. Fusion power: Next ITERation? 2011-08-31T17:32:44Z Today, there are many concentrated uranium deposits, but—as you might be relieved to hear— it is impossible for nuclear fission to spontaneously develop. Nature's Nuclear Reactors: The Two Billion Year Old Natural Fission Reactors in Gabon, Western Africa 2011-07-13T11:15:00.240Z Within minutes, control rods were inserted to stop the nuclear fission. Japan Plant Had Earlier Alert 2011-06-15T09:25:48Z Japan time at its Fukushima nuclear power plant after detecting possible nuclear fission. Tepco Says Nuclear Fission Possible at Fukushima Plant 2011-11-02T01:03:14Z The two man-made isotopes of strontium—Sr-89 and Sr-90—are among the most dangerous products of nuclear fission to human and animal health. Radioactive Strontium Found in Hilo, Hawaii Milk 2011-04-27T12:45:02Z Nuclear criticality refers to a sustained nuclear fission chain reaction. Neutron dance: What happens at the heart of a nuclear reactor? 2011-04-21T23:45:02.147Z All of this provided the perfect recipe for a natural nuclear fission reactor. Nature's Nuclear Reactors: The Two Billion Year Old Natural Fission Reactors in Gabon, Western Africa 2011-07-13T11:15:00.240Z We don't need renewable or nuclear fission power. Viewpoint 2011-04-04T17:44:51Z Officials trace these radioactive isotopes to Japan because they are products of nuclear fission that do not normally occur in the environment. Radiation Now Found in Rain in California, Idaho, Minnesota 2011-04-03T18:00:44Z Boron, an element that absorbs neutrons and hinders nuclear fission, has been mixed with cooling water to prevent this, Hidehiko Nishiyama, a spokesman for the agency, told reporters today. Fukushima Workers Threatened by Heat Bursts; Sea Radiation Rises 2011-03-31T06:04:04Z Boron, an element that absorbs neutrons and hinders nuclear fission, has been mixed with cooling water to prevent accidental chain reactions, Hidehiko Nishiyama, a spokesman for the agency, told reporters today. Fukushima Workers Face Risk of Uncontrolled Reactions, IAEA Says 2011-03-31T04:02:01Z Progress Energy said it picked up low levels of iodine-131, a radioactive byproduct of nuclear fission, at its nuclear plant in South Carolina and a Florida plant. Traces of Radiation Detected in U.S. Rainwater 2011-03-28T18:37:45Z If we produced all of our electricity using nuclear fission, Uranium would become a rare commodity just like fossil fuels. Viewpoint 2011-04-04T17:44:51Z They are a common, if not exactly modern, General Electric design that harnesses nuclear fission to boil and drive steam turbines to generate electricity. MOX Battle: Mixed Oxide Nuclear Fuel Raises Safety Questions 2011-03-25T20:46:17.520Z A detector at the Pacific Northwest National Laboratory in Washington State earlier this week also detected trace amounts of xenon-133 - a gas produced during nuclear fission - the DOE said. Testing finds no health threat along West Coast 2011-03-19T11:31:04Z But that won’t solve the essential problem of doing better, much better, in the future with respect to the awesome power of nuclear fission. Post Fukushima-- burn more coal and oil, and hire more engineers not regulators 2011-03-20T16:43:37Z Worse, reactor No. 3 also employed so-called mixed oxide fuel—or uranium fuel rods made from recycled materials that include plutonium—creating extra cause for concern of nuclear fission restarting itself. Fate of Nuclear Plant in Japan Hangs in the Balance as Melting Continues 2011-03-19T00:15:06.053Z He has talked about dumping a combination of boric acid to dampen the nuclear fission, sand and eventually concrete to seal off the nuclear material. After the quake 2011-03-18T21:45:00Z In other words, a nuclear fission chain reaction could start in a pond that lies outside parts of the building designed to contain radioactive materials. Choppers and cannons bring no nuclear relief 2011-03-17T15:02:16Z These radioactive materials are products of the nuclear fission reactions that generate power in the nuclear power plants. How Radiation Threatens Health 2011-03-15T23:45:00.243Z They rely on harnessing nuclear fission—the splitting of an atom into two smaller atoms, which also yields heat and sends neutrons flying. What Happens During a Nuclear Meltdown? 2011-03-15T14:15:00.257Z The energy produced by nuclear fission in the Chernobyl reactor was orders of magnitude more than the residual heat in the Fukushima reactor's core. Japan races to avert multiple nuclear meltdowns 2011-03-13T13:48:00Z Bergeron explained the basics of overheating at a nuclear fission plant. Nuclear Experts Explain Worst-Case Scenario at Fukushima Power Plant 2011-03-13T02:45:00.297Z The energy produced by nuclear fission in the Chernobyl reactor was orders of magnitude less than the residual heat in the Fukushima reactor's core. Why Japan probably won't face a new Chernobyl 2011-03-12T18:13:00Z Runaway nuclear fission reactions created a build-up of pressure and a massive and deadly radiation leakage as explosions ripped through a too-feeble reactor shell. Japan radiation leak evokes Three Mile Island 2011-03-12T17:22:58Z Sustained nuclear fission reactions rely on the passing of neutrons from one atom to another—the neutrons released in one atom's fissioning trigger the fissioning of the next atom. What Happens During a Nuclear Meltdown? 2011-03-15T14:15:00.257Z Even when the reactor is shut down and the nuclear fission is halted, an intense level of heat remains and needs to dissipated, which is the role of the cooling mechanisms. Japan quake prompts nuclear alert 2011-03-11T16:26:48Z So was Enrico Fermi, the pioneer of nuclear fission. Wordplay: Numberplay: Figuring It Out in Your Head 2010-12-20T20:49:39Z In 1944 he was tapped for the Manhattan Project to analyze radioactivity in nuclear fission. Neutron Bomb Inventor Dies at 89 2010-12-01T17:18:00Z That's because the nuclear fission process produces virtually no greenhouse gas emissions, unlike the burning of fossil fuels such as coal and natural gas. Nuclear energy has environmental pluses; safety remains an issue 2010-08-10T04:00:00Z Commercial nuclear reactors rely on nuclear fission, a process that generates energy from splitting atoms. Iran plans to build nuclear fusion reactor 2010-07-24T11:23:00Z Heart of America’s argument is that the activity that produced the Hanford wastes was quite similar to this, with uranium from reactors chopped up to retrieve the plutonium created as a side-effect of nuclear fission. A Watchdog's Warning on Nuclear Waste 2010-07-12T14:36:00Z But in an era of concern about dependence on foreign supplies of fossil fuels and increasing atmospheric carbon, electricity generated by nuclear fission is again attracting attention. Finland Approves New Nuclear Plants 2010-07-01T19:01:00Z Tritium is found naturally in tiny amounts and is a product of nuclear fission. Tainted nuke plant water reaches major NJ aquifer 2010-05-07T19:22:00Z For the same reason that we continue to mine for coal, use nuclear fission for electrical power and dam our great rivers. What the Spill Means for Offshore Drilling 2010-04-30T17:46:00Z Take Lise Meitner, an Austrian-born physicist who was instrumental in discovering nuclear fission with Otto Hahn but who did not share his 1944 Nobel Prize for it. Special Report: The Female Factor: Risk and Opportunity for Women in 21st-Century Challenges 2010-03-05T20:36:00Z Complete; not the partial liberation incidental to the nuclear fission of such unstable isotopes as those of thorium, uranium, plutonium, and so on. Triplanetary Some foreign power, concerned about this country's growing mastery of nuclear fission? Twelve Times Zero "Dr. Hildebrand was telling us all about nuclear fission." The Doorway If it's not a new wrinkle in nuclear fission, it's a gun to shoot around corners and down winding staircases. Belly Laugh And then Martin Gunther said without inflection, "I note that you have removed from the Pedagogue's library the information dealing with nuclear fission." Adaptation And such is the violence of nuclear fission; so utterly incomprehensible is its speed, that Theodore K. Kinnison died without realizing that anything whatever was happening to his ship or to him. Triplanetary I want to find out how many top nuclear fission boys have died in the past four or five months.... Twelve Times Zero The nuclear fission of a pound of uranium would produce an equal temperature rise in over 200 million pounds of water. The Atomic Bombings of Hiroshima and Nagasaki All political parties split, split and split- Like nuclear fission, to gain explosive might? Truth and the Myth : Couplets quips |
| 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。