| 单词 | weak force |
| 例句 | It was also found that the weak force did not obey the symmetry C. That is, it would cause a universe composed of antiparticles to behave differently from our universe. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z Nevertheless, it seemed that the weak force did obey the combined symmetry CP. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z The weak force engages in more miscellaneous tasks, mostly to do with controlling the rates of certain sorts of radioactive decay. A Short History of Nearly Everything 2003-05-06T00:00:00Z They suggested that in addition to the photon, there were three other spin-1 particles, known collectively as massive vector bosons, that carried the weak force. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z This does not matter too much, because gravity is such a weak force that its effects can usually be neglected when we are dealing with elementary particles or atoms. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z On the other hand, the electromagnetic and weak forces, which are not asymptotically free, get stronger at high energies. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z He then defines four principles that characterize the four basic forces in nature: electromagnetism, gravity, the strong force and the weak force. Electrons, Photons, Gluons, Quarks: A Nobel-Winning Physicist Explains It All 2021-02-08T05:00:00Z Plug in the known strength of the weak force, which mediates this process, and you can calculate how many relic WIMPs should exist today. Physics confronts its heart of darkness: Cracks showing in dominant explanation for dark matter 2016-09-01T04:00:00Z The neutral charge is important because gravity is a weak force. What Happens if You Drop Antimatter? New Gravitational Test Sees First Fall 2023-09-27T04:00:00Z At extremely high energies, the electromagnetic force, which controls the behavior of charged particles such as electrons, and the weak force, which governs processes such as fission decays, are unified into one “electroweak” force. Particle Physicists Dream of a Muon Collider 2023-08-28T04:00:00Z The remaining two are more obscure: the strong force binds protons and neutrons together within atomic nuclei, whereas the weak force helps atoms and subatomic particles to fall apart via a form of radioactive decay. Will Scientists Ever Find a Theory of Everything? 2023-08-19T04:00:00Z The idea of unifying forces, which is so essential to physics today, grew out of the discovery of Fermi’s ‘weak force’ that the neutrino feels. The Most Surprising Discoveries in Physics 2023-07-27T04:00:00Z Instead of an electromagnetic interaction, neutrinos interact via a different force called the weak force. How Big Is a Proton? Neutrinos Weigh In 2023-03-16T04:00:00Z Much as an electric field can overwhelm the weak force of gravity, so, too, can the warmth of a lonely atom. What Happens if You Drop Antimatter? New Gravitational Test Sees First Fall 2023-09-27T04:00:00Z The weak force causes this decay, as it does all β decay. College Physics for AP Courses 2015-08-12T00:00:00Z The weak force was the next to join the force family, after scientists developed high-energy particle accelerators. Will Scientists Ever Find a Theory of Everything? 2023-08-19T04:00:00Z To learn more, see the discussion of these weak forces in the chapter on liquids and solids. Chemistry 2019-02-14T00:00:00Z The weak force is involved in radioactive decay and in reactions that result in the production of neutrinos. Astronomy 2016-10-13T00:00:00Z The strong force is one of four forces known in the universe, along with the “weak force” — which applies to the decay of particles — as well as the electromagnetic force and gravity. As ‘Run 3’ begins, CERN touts discovery of exotic particles 2022-07-05T04:00:00Z This conclusion is reached from the fact that particles that have long lifetimes decay via the weak force and do not conserve strangeness. College Physics for AP Courses 2015-08-12T00:00:00Z All interact by exchanging other particles: The photon conveys the electromagnetic force, the gluon carries the strong force that binds quarks, and the massive W and Z bosons carry the weak force. Ten years after the Higgs, physicists face the nightmare of finding nothing else 2022-06-12T04:00:00Z The weak forces between layers give graphite the soft, flaky character that makes it useful as the so-called “lead” in pencils and the slippery character that makes it useful as a lubricant. Chemistry 2019-02-14T00:00:00Z There is yet another particle in this zoo behaving strangely: the W boson, which conveys the so-called weak force responsible for radioactive decay. As the Large Hadron Collider Revs Up, Physicists’ Hopes Soar 2022-06-13T04:00:00Z Like the particles that convey the weak force, the W and Z bosons, WIMPs would weigh roughly 100 times as much as a proton. To crack the mystery of dark matter, physicists turn to supersensitive quantum sensors 2022-04-27T04:00:00Z Furthermore, the strange quark can be changed by the weak force, too, making s → u and s → d possible. College Physics for AP Courses 2015-08-12T00:00:00Z Scientists presume that WIMPs would have formed naturally in the early universe and predict that they have some kind of interaction with regular matter through the weak force. Are Telescopes the Only Way to Find Dark Matter? 2022-04-04T04:00:00Z The volatility of dry ice reflect these weak forces between molecules. Chemistry 2019-02-14T00:00:00Z In addition, because one of the two protons must be converted to a neutron, the process requires a W boson, the carrier of what we call the weak force. Readers Respond to the October 2021 Issue 2022-02-20T05:00:00Z Such posited neutrinos are called “sterile” because they would only interact with other particles via gravity, whereas the known three flavors can do so through the weak force as well. Can Sterile Neutrinos Exist? 2021-11-04T04:00:00Z This explains the violation of the conservation of strangeness by the weak force noted in the preceding section. College Physics for AP Courses 2015-08-12T00:00:00Z And the weak force, which operates on both the quarks and the electrons, turns protons into neutrons and positively charged electrons and controls the rate of the first step in the fusion process. Weird Muons May Point to New Particles and Forces of Nature 2021-09-14T04:00:00Z These were the relatively familiar forces of electromagnetism and gravity as well as two forces that act on subatomic particles, the strong force and the weak force. Steven Weinberg, Nobel-winning physicist who united principal forces of nature, dies at 88 2021-07-26T04:00:00Z One of them, the strong force, binds atomic nuclei together; the last, the weak force, is implicated in certain types of radioactive decay. Dark matter's weirdness could be explained by a new, as-yet-unseen fundamental force 2021-06-04T04:00:00Z It is a particle called the Z′ boson because of its similarity with the Z boson, which carries the ‘weak force’ responsible for nuclear decay. Muon Results Throw Physicists’ Best Theories into Confusion 2021-04-29T04:00:00Z Since electrons spend some time in the nucleus, their energies are affected, and spectra can even indicate new aspects of the weak force, such as the possibility of other carrier particles. College Physics for AP Courses 2015-08-12T00:00:00Z This process produces pions, unstable composite particles that then decay into neutrinos and muons through weak force effects. Weird Muons May Point to New Particles and Forces of Nature 2021-09-14T04:00:00Z The weak force is one that is unseen in daily life and exists at the subatomic level, accounting for the radioactive decay of certain particles into certain others. Steven Weinberg, Nobel-winning physicist who united principal forces of nature, dies at 88 2021-07-26T04:00:00Z That tiny asymmetry would signal the effect of the weak force, and its size would reveal the spatial spread of the neutrons. Neutron stars may be bigger than expected, measurement of lead nucleus suggests 2021-04-27T04:00:00Z The model also explains three of the four fundamental forces of nature: electromagnetism; the strong force, which holds atomic nuclei together; and the weak force which causes nuclear reactions in the sun. Cern experiment hints at new force of nature 2021-03-23T04:00:00Z So systems many orders of magnitude larger than the range of the weak force supply evidence of electroweak unification in addition to evidence found at the particle scale. College Physics for AP Courses 2015-08-12T00:00:00Z Such a thin fiber is extremely compliant, so even a very weak force yields a relatively large rotation. Physicists Measure the Gravitational Force between the Smallest Masses Yet 2021-03-10T05:00:00Z They made what was described as the first experimental study at high energies of interactions involving the “weak force.” Jack Steinberger, Nobel laureate in physics, dies at 99 2020-12-16T05:00:00Z A longtime researcher at what is now Nokia Bell Labs in New Jersey, Dr. Ashkin was fascinated by an often-overlooked aspect of light, which exerts a relatively weak force known as radiation pressure. Arthur Ashkin, Nobel-winning physicist who trapped molecules with light, dies at 98 2020-09-28T04:00:00Z Instead of carrying the electromagnetic, strong or weak force, it carries mass to all the elementary particles via the so-called Higgs field, which pervades the universe. Higgs Boson Gives Next-Generation Particle Its Heft 2020-08-06T04:00:00Z At the energy of GUTs, the carrier particles of the weak force would become massless and identical to gluons. College Physics for AP Courses 2015-08-12T00:00:00Z Cosmic rays, or more precisely, the showers of secondary particles they produce, and which are created by this weak force, provide a direct link between the asymmetry of physics and the asymmetry of biology. Cosmic Rays and the Handedness of Life 2020-07-22T04:00:00Z These are the strong force and the weak force. Jack Steinberger, Nobel laureate in physics, dies at 99 2020-12-16T05:00:00Z Last, the weak force is extremely short-range and causes atomic nuclei to disintegrate through a process called nuclear β-decay. Dark-matter detector observes exotic nuclear decay 2019-04-23T04:00:00Z Gravity may be a weak force, but you can't shield against it. Soon we'll be able to see round corners and underground 2019-03-07T05:00:00Z Explain how the weak force can change strangeness by changing quark flavor. College Physics for AP Courses 2015-08-12T00:00:00Z Neutrinos interact with matter through the weak force — one of the four fundamental forces of nature. Special relativity validated by neutrinos 2018-08-12T04:00:00Z One class of hypothetical objects that might be dark matter do interact via the weak force, a phenomenon that also controls some sorts of radioactive decay. Fundamental physics is frustrating physicists 2018-01-11T05:00:00Z Because the weak force operates only at subatomic distances, the odds of a tiny neutrino bouncing off of an individual neutron or proton are miniscule. Ever-Elusive Neutrinos Spotted Bouncing Off Nuclei for the First Time 2017-08-03T04:00:00Z But the weak force treats all leptons equally. Lawbreaking Particles May Point to a Previously Unknown Force in the Universe 2017-07-17T04:00:00Z Beta decay is caused by the weak force, as are all reactions in which strangeness changes. College Physics for AP Courses 2015-08-12T00:00:00Z The influence of the weak force is limited to minute distances. Special relativity validated by neutrinos 2018-08-12T04:00:00Z That’s because gravity is such a weak force that even the most powerful gravitational waves may only move the Earth by the width of a proton or less. Extragalactic black hole collision deletes two suns’ worth of mass from the universe 2017-06-14T04:00:00Z Gravity, for instance, still isn't completely understood, despite decades of effort to reconcile the "weak force" of nature with the other three, much stronger forces. A Fifth Force of Nature? 2016-08-17T04:00:00Z New or weak forces need forward deployed teams of advisers to help them actually fight.” One step back, two steps forward 2015-10-29T04:00:00Z Does this imply that the weak force can change quark flavor? College Physics for AP Courses 2015-08-12T00:00:00Z Gravity is a maddeningly weak force, and thus very difficult to measure. Using Atoms To Measure Tiny Forces 2015-06-10T04:00:00Z The standard model of particle physics describes the fundamental particles and their interactions via the strong, electromagnetic and weak forces. Observation of the rare Bs0 →µ+µ− decay from the combined analysis of CMS and LHCb data : Nature : Nature Publishing Group 2015-05-12T04:00:00Z The Standard Model of particle physics explains how the universe's fundamental particles interact through strong, electromagnetic, and weak forces — but it doesn't explain everything. Large Hadron Collider captures incredibly rare particle decay for the first time 2015-05-13T04:00:00Z In Libya, IS is still a weak force, although it is taking advantage of the civil war in the country to slowly gain traction. Why IS wants to expand into Yemen 2015-03-21T04:00:00Z Similarly, reactions that create other particles, like cosmic rays interacting with nuclei in the atmosphere, have greater probability if they are caused by the strong force than if they are caused by the weak force. College Physics for AP Courses 2015-08-12T00:00:00Z Unified Field Theory – The four fundamental forces in nature are the strong nuclear force, the weak force, electromagnetism and gravity. Why Particle Physiucs Matters To Manufacturers 2015-03-17T04:00:00Z At the elementary level, the weak force is composed of a ‘charged current’ and a ‘neutral current’ mediated by the W± and Z0 bosons, respectively. Observation of the rare Bs0 →µ+µ− decay from the combined analysis of CMS and LHCb data : Nature : Nature Publishing Group 2015-05-12T04:00:00Z Gravity is hard to measure because it is an extremely weak force. Gravity rivals join forces to nail down Big G 2014-10-07T04:00:00Z But so far, the opposition groups recognized as legitimate by the United States and its allies have been a comparatively weak force on the battlefield. First U.S. airstrikes in Syria pound Islamic State 2014-09-23T04:00:00Z The neutron is a good example of decay via the weak force. College Physics for AP Courses 2015-08-12T00:00:00Z Understanding neutron beta decay is also important for understanding one of the four fundamental forces of nature — the weak force. Neutron death mystery has physicists stymied 2014-05-12T04:00:00Z WIMPs interact among themselves and with ordinary matter gravitationally and through the weak force, but not electromagnetically or through the strong nuclear force. Physics: Broaden the search for dark matter 2014-03-05T18:50:41.303Z WIMPs interact through the weak force and gravity, but not through electromagnetism – so they can’t be seen – and not through the strong nuclear force. Why The LUX Results Matter To Dark Matter - And To WIMPs 2013-11-07T18:44:00Z But gravity – social media – is a weak force that affects everything, and you'll have no idea how things are going to go. Getting to grips with social media 2013-06-02T23:01:05Z However, strangeness is not conserved by the weak force. College Physics for AP Courses 2015-08-12T00:00:00Z “When we concentrated upon nuclear engineering beginning in the 1940′s we jumped to the strong force/particle physics and leapt over the weak force/condensed matter nuclear physics,” Bushnell said. NASA: A Nuclear Reactor To Replace Your Water Heater 2013-02-22T19:18:30Z In 1967, they predicted the existence of particles that convey the weak force, the W and Z bosons, which were found in 1983. [Special Issue News] Breakthrough of the Year: The Discovery of the Higgs Boson 2012-12-20T21:25:17.963Z The particles that carry the weak force, called W and Z bosons, derive their masses from the Higgs field, a field of energy saturating all space. Supersymmetry Fails Test, Forcing Physics to Seek New Ideas 2012-11-29T12:15:00.207Z Electroweak refers to two forces of nature: the electromagnetic force, which unites electricity and magnetism, and the weak force, which governs radioactive decay. Why do physicists care so much about finding the Higgs boson? 2012-11-21T19:45:06.383Z At that distance, the strengths of the EM and weak forces are the same. College Physics for AP Courses 2015-08-12T00:00:00Z Leptons are elementary and interact only through the relatively feeble electromagnetic and weak forces. After the Higgs: The new particle landscape 2012-08-29T17:50:28.943Z The particles respond only to the aptly named weak force, and mostly stream through solid matter as if there were no barrier. Particle physics: A matter of detail 2012-04-18T17:20:48.653Z Ordinary people are familiar with gravity and electromagnetism, but there are also the strong and weak forces, which operate on the subatomic level. Physicists hope to find the Higgs boson, key to unified field theory, this year 2012-04-02T19:15:00Z In the 1960s, many physicists were working on reconciling the electromagnetic and weak forces into a unified theory. Why do physicists care so much about finding the Higgs boson? 2012-11-21T19:45:06.383Z If the Higgs boson is discovered and found to have mass, will it be considered the ultimate carrier of the weak force? College Physics for AP Courses 2015-08-12T00:00:00Z He redressed the balance there for the moment by overawing Massey’s weak force, and his purse profited considerably by fresh opportunities for extortion, but he and his men were not at Naseby. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 4 "Grasshopper" to "Greek Language" 2011-11-28T03:00:19.517Z But the consequent dispersion of their weak forces only exposed them to greater peril. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 2 "French Literature" to "Frost, William" 2011-10-14T02:00:26.280Z However, in the 1960s, scientists came up with an idea that would unify at least two of the forces: electromagnetism and the weak force. Physicists hope to find the Higgs boson, key to unified field theory, this year 2012-04-02T19:15:00Z In order to combine these forces, they needed to introduce a set of force-carrying particles for the weak force to complement the photon—the mass-less particle that carries the electromagnetic force. Why do physicists care so much about finding the Higgs boson? 2012-11-21T19:45:06.383Z Does this imply that the W + , W − , and Z 0 are the ultimate carriers of the weak force? College Physics for AP Courses 2015-08-12T00:00:00Z On the 9th and 10th we were in contact with a weak force of the enemy's infantry, supported by two or three batteries and some remnants of cavalry regiments. In the Russian Ranks A Soldier's Account of the Fighting in Poland 2011-09-11T02:00:08.747Z The monitor doesn’t use an adhesive, relying on a weak force called the van der Waals force that causes molecules and surfaces to stick together without interfering with motion. Tiny, wireless stick-on patches may one day monitor patients? hearts, other vital signs 2011-08-11T18:11:37Z The devastation and bloodshed of the opening days of the war have prevented the larger Belgian cities from attempting any attacks upon the weak forces with which it was necessary for us to hold them. Lest We Forget World War Stories 2011-07-07T02:00:28.183Z For the electromagnetic and weak forces to unify, their force carriers would have to be symmetric. Why do physicists care so much about finding the Higgs boson? 2012-11-21T19:45:06.383Z The ratio of the strong to the weak force and the ratio of the strong force to the electromagnetic force become 1 under circumstances where they are unified. College Physics for AP Courses 2015-08-12T00:00:00Z Davis had moved rapidly into the breastworks which Negley had occupied, and there placed his weak force of two brigades across Longstreet's advance. Chattanooga and Chickamauga Reprint of Gen. H. V. Boynton's letters to the Cincinnati Commercial Gazette, August, 1888. 2011-05-10T02:00:58.760Z You must not stay and listen to me,' pushing her away with weak force. Heriot's Choice A Tale 2011-04-20T02:00:22.760Z A weak force as they were, it would not do to advance farther along the Coleford road, should there chance to be an enemy in their rear. No Quarter! 2011-03-26T02:00:16.330Z The weak force is one of the four fundamental forces of the universe, the others being gravity, electromagnetism and the strong force, which holds atomic nuclei together. Simon van der Meer, Nobel Laureate, Dies at 85 2011-03-12T02:31:51Z Considering the preceding and the short lifetime, can the weak force be responsible? College Physics for AP Courses 2015-08-12T00:00:00Z You can easily understand that those weak forces would be in great danger if the Germans were to sweep round to the west. The Childrens' Story of the War, Volume 3 (of 10) From the First Battle of Ypres to the End of the Year 1914 2011-02-23T03:00:28.797Z To their wonderful resourcefulness is due the fact that so many comparatively weak forces were enabled to penetrate in safety a hostile country teeming with the most treacherous and wily foes. The Westerners 2011-02-14T03:00:39.347Z Or getting over to the Aust passage of the Severn, with such a weak force as attends your Highness.” No Quarter! 2011-03-26T02:00:16.330Z The weak force is of no consequence at the scale of everyday objects. Simon van der Meer, Nobel Laureate, Dies at 85 2011-03-12T02:31:51Z Write the equation in terms of the constituent quarks, indicating that the weak force is responsible. College Physics for AP Courses 2015-08-12T00:00:00Z The strength of the weak force is encapsulated in a number called the Fermi constant, named for the Italian-American scientist Enrico Fermi. Weak Nuclear Force Is Less Weak 2011-01-13T18:23:00Z The universe's four forces — the weak force, strong force, electromagnetism and gravity — had yet to differentiate, and the tiny particles that carried those forces had yet to emerge as separate entities. Why the Collider Matters: In Search of the 'God Particle' 2010-04-03T22:25:00Z The so-called weak force, which governs some radioactive decays, seems to be left-handed, causing neutrinos, the ghostlike elementary particles that are governed by that force, to spin clockwise, when viewed oncoming, but never counterclockwise. 2010-02-15T22:23:00Z For instance, the weak force enables the sun to shine by allowing hydrogen atoms to fuse together, releasing heat and light. Simon van der Meer, Nobel Laureate, Dies at 85 2011-03-12T02:31:51Z The weak force generates massive particles that hold it together. College Physics for AP Courses 2015-08-12T00:00:00Z Thus the weak force is just a tiny bit stronger than we thought. Weak Nuclear Force Is Less Weak 2011-01-13T18:23:00Z But it had been dearly bought, and their leader saw plainly that he could not succeed in that savage land with such a weak force. The Spanish Pioneers To defeat such an enormous force as this, a European expedition was necessary, not the weak force at Gordon's disposal. Ten Years' Captivity in the Mahdi's Camp 1882-1892 The W and Z bosons convey the weak force in much the same way photons — particles of light — convey electromagnetism. Simon van der Meer, Nobel Laureate, Dies at 85 2011-03-12T02:31:51Z The stage before 10−11 s back to 10−34 s is called the electroweak epoch, because the electromagnetic and weak forces become identical for energies above about 100 GeV. College Physics for AP Courses 2015-08-12T00:00:00Z Another expert on the weak force, University of Wisconsin professor Michael Ramsey-Musolf, considers the muon experiment to be a tour-de-force piece of work. Weak Nuclear Force Is Less Weak 2011-01-13T18:23:00Z To what weak forces will such necks bow when slavery commands! The Trial of Theodore Parker For the "Misdemeanor" of a Speech in Faneuil Hall against Kidnapping, before the Circuit Court of the United States, at Boston, April 3, 1855, with the Defence During all this time I was preparing to fight them with my weak force. Pathfinders of the Great Plains A Chronicle of La Vérendrye and his Sons For the weak force experiments, physicists needed high-speed collisions between a proton, a particle found in the nucleus of atoms, and its antimatter doppelganger, the antiproton. Simon van der Meer, Nobel Laureate, Dies at 85 2011-03-12T02:31:51Z The crisis past, Lobkowitz then went to Piedmont to assist the king against Conti, the king of Naples returned home, and de Gages followed the Austrians with a weak force. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" His plans had never been based on holding back the seemingly weak forces of Cathay. Victory It must not be supposed that the whisper is always associated with moderate or with weak force as in the preceding examples. The Ontario High School Reader Apparently it was too heavy for the weak force activating the cylinders. Sense from Thought Divide “But they are too many for you to have with your weak force.” The Black Bar But from the strategical aspect the operations showed by their conclusion that the error had been made of nibbling with weak forces at objectives which could only have been captured and secured by strong. The Story of the 2/4th Oxfordshire and Buckinghamshire Light Infantry Indeed, a weak force, which bears a suitable relation to the constitution of the molecule, can, by timely savings and accumulations, accomplish what a strong force out of relation fails to achieve. Scientific American Supplement, No. 365, December 30, 1882 He thought he had against him to the west only weak forces. A General Sketch of the European War The First Phase It seems scarcely credible that the apparently weak forces of nature like those we have mentioned are sufficiently powerful to work over the massive crust of the earth as geology says they have. The Doctrine of Evolution Its Basis and Its Scope We had only a weak force at Li�ge four days ago, for it is not possible to prepare for such a bold undertaking by collecting large masses of men. New York Times Current History: The European War from the Beginning to March 1915, Vol 1, No. 2 Who Began the War, and Why? Hill at Harper's Ferry to settle the negotiations of surrender, and had but a comparative weak force to meet this overwhelming number of two army corps. History of Kershaw's Brigade One night, when retreating with a weak force, he had the Waikatos at his heels. The Long White Cloud The Greeks, instead of hard contests for the Haliacmon Valley and Epirus—their proper Irredenta—pushed such weak forces before them that they got through to Salonika just in time to forestall a Bulgarian column. The Balkans A History of Bulgaria—Serbia—Greece—Rumania—Turkey At the battle of Hastings, on October the fourteenth of that year, he destroyed the weak forces of Harold of Wessex, the last of the Anglo-Saxon Kings and established himself as King of England. The Story of Mankind This is an operation too difficult for a weak force to accomplish. The Story of the Malakand Field Force An Episode of Frontier War I found the prejudice here very bitter against a colored school; but the colored people had combined their weak forces and built a church, designed for school, as well as their occasional meetings. A Woman's Life-Work — Labors and Experiences The cattle captured from Lokko would then fall into the hands of Belinian, and my camp, protected by a weak force, was to be surprised. Ismailia These are distant, faint memories, weak forces,—but they influence conduct so that the little one takes a tart and eats it hurriedly before mother returns and then runs into the dining room or bedroom. The Foundations of Personality |
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