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jan 1, 1964 - Murray Gell-Mann : He showed what makes up protons and neutrons. He discovered the quark, a fast moving point of energy and said that for every proton and neutron contains three quarks.
Added to timeline:
Atomic Timeline
By
Alicia Liew
10 Sep 2017
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0
554
Date:
jan 1, 1964
Now
~ 62 years ago
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