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For every particle (matter) there is a corresponding antiparticle (antimatter). Antiparticles are the same as the corresponding matter particle in every respect except for their opposite charges. A proton is electrically positive: an anti-proton is electrically negative. They both have the exact same mass, so they are affected in the same way by gravity. When a particle and its antiparticle meet, they annihilate into pure energy. This energy may then give rise to neutral force-carrier particles, such as photons, Z bosons, or gluons. The symbol for an antimatter particle is a bar over the corresponding matter particle symbol. For example, a proton ()
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submitted by gundadude (0 m) on 27 Apr 2007 10:21:28 IST (0 comments 59 views)
