We all know that every substance is made up of particles. Those particles may be electron, proton and neutron in different terms. The small constituents that possess the mass and has a chare and the spin is the perfect definition for particles. There is antiparticles as well. Antiparticles are those which have the same mass as that of the particles but have opposite charge and the spin. In this way we can distinguish between particles and antiparticles but besides these there are many neutral or massless particles. Photon is the particle that has no mass at all but they can be distinguished from there anti by the help of spin. If the spin is clockwise it is particle and if the spin is anticlockwise it is antiparticles. Hence in this way we can distinguish between particle and antiparticles. Electron is the particle and it's anti is positron, proton is the particle and its anti is anti proton, neutron is the particle and its anti is anti neutrino. This are the examples of the particles and antiparticles.
Annihilation is the process of combining the antiparticles with the particles so to loose their existence. In another word it is also known as the pairing of the particles and antiparticles. If the particles combine with the antiparticles then a huge amount of energy is released. The objects loose their existence. This is the reason that every object from the very far objects as not touched by the researchers before studying its characteristics and types. If suppose there is a particle in earth and may be there is the presence of the anti particle, so if we collide this two then a huge amount of energy from the Einstein relation of e=mc^2 that amount of energy is produced so it is very dangerous as it may loose the existence of the object to release the energy.
Hence in this way the antiparticles and annihilation is discussed.
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