单词 | antielectron |
例句 | The most interesting of these is the prediction that protons, which make up much of the mass of ordinary matter, can spontaneously decay into lighter particles such as antielectrons. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z As we have seen, GUTs allow quarks to change into antielectrons at high energy. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z So most of the electrons and antielectrons would have annihilated with each other to produce more photons, leaving only a few electrons left over. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z And since there are forces that do not obey the symmetry T, it follows that as the universe expands, these forces could cause more antielectrons to turn into quarks than electrons into antiquarks. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z The reason this is possible is that at the grand unification energy there is no essential difference between a quark and an antielectron. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z It also predicted that the electron should have a partner: an antielectron, or positron. A Brief History of Time: And Other Essays 1988-01-01T00:00:00Z First, the team used an electric field to catch antiprotons and antielectrons generated in particle collisions. Antimatter falls down, just like ordinary matter 2023-09-27T04:00:00Z Muon and electron antineutrinos can spawn detectable antimuons and antielectrons by striking protons, although with about half the efficiency of the neutrino interactions. Showdown: Two huge neutrino detectors will vie to probe matter’s origins 2022-09-28T04:00:00Z For example, an antielectron would usually be created at the same time as an electron. College Physics for AP Courses 2015-08-12T00:00:00Z The antielectron is the positron, which has the same mass as the electron but is positively charged. Astronomy 2016-10-13T00:00:00Z The best-known example is the antielectron, or positron. Matter–antimatter symmetry violated 2020-04-14T04:00:00Z They measured the frequency of light needed to jolt a positron — an antielectron — from its lowest energy level to the next level up, and found no discrepancy with the corresponding energy transition in ordinary hydrogen. Ephemeral antimatter atoms pinned down in milestone laser test 2016-12-18T05:00:00Z In the 1990s, groups in North America, Japan, and Europe independently started planning linear colliders to smash together electrons and antielectrons, or positrons. Japan hopes to staff up to host the International Linear Collider 2016-01-07T05:00:00Z The antielectron is often represented by the symbol e+ , but in beta decay it is written as β+ to indicate the antielectron was emitted in a nuclear decay. College Physics for AP Courses 2015-08-12T00:00:00Z Also produced in this reaction are a positron, which is an antielectron, and an elusive particle named the neutrino. Astronomy 2016-10-13T00:00:00Z The two gammas produced by the annihilation of an antielectron and electron are linearly polarized at right angles to each other, so they should scatter off the aluminum in perpendicular directions. How to Build Your Own Quantum Entanglement Experiment, Part 2 (of 2) 2013-02-14T15:15:03.647Z Thus, in β decay, an antielectron's neutrino v- e must be created with Le = −1 when an electron with Le =+1 is created, so that the total remains 0 as it was before decay. College Physics for AP Courses 2015-08-12T00:00:00Z |
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