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Untitled Prezi

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begum orhan

on 19 March 2013

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Transcript of Untitled Prezi

All the known matter particles are composites of quarks and leptons, and they interact by exchanging force carrier particles. Everything from galaxies to mountains to molecules is made from quarks and leptons. But that is not the whole story. Quarks behave differently than leptons, and for each kind of matter particle there is a corresponding antimatter particle. For every type of matter particle we've found, there also exists a corresponding antimatter particle, or antiparticle.
Antiparticles look and behave just like their corresponding matter particles, except they have opposite charges. For instance, a proton is electrically positive whereas an antiproton is electrically negative. Gravity affects matter and antimatter the same way because gravity is not a charged property and a matter particle has the same mass as its antiparticle.
When a matter particle and antimatter particle meet, they annihilate into pure energy! Physicists have developed a theory called The Standard Model that explains what the world is and what holds it together. It is a simple and comprehensive theory that explains all the hundreds of particles and complex interactions with only:
6 quarks.
6 leptons. The best-known lepton is the electron. We will talk about leptons in just a few pages.
Force carrier particles, like the photon. We will talk about these particles later. The Standard Model is a good theory. Experiments have verified its predictions to incredible precision, and all the particles predicted by this theory have been found. But it does not explain everything. For example, gravity is not included in the Standard Model.
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