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annihilation |
Also found in: Wikipedia, Hutchinson | 0.04 sec. |
annihilationIn physics, a reaction in which a particle and its antiparticle (see antimatter) collide and disappear. The annihilation releases energy equal to the original mass m multiplied by the square of the speed of light c, or E = mc2, in accordance with Albert Einstein's special theory of relativity. The energy can appear directly as gamma rays or can convert back to particles and antiparticles (see pair production). How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| On the other hand, if there is at least one stable shadow particle that has mass, does not decay and avoids annihiliation, it could be that |
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Annihiliation