Gravitational Wave #relitivity

Gravitational Wave:


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What is Particle Physics ? You see everywhere there is patterns in the universe but if you travel inside it; you will see small particles rather than big things i.e. universe itself. So, the branch of physics that deals with the small fundamental particles is called particle physics. Particle physics studies the sub-atomic particles inside an atom. Fundamental particles means not regarded as made up of other particles like electron. But what about proton and neutron ?  Proton and neutron are elementary particles. Elementary particles means which can be sub-divided into other particles. All matter around us is made of elementary particles, the building block of matter. These particles occur in two basic types called quarks and leptons.
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