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jan 1, 1964 - Elementary particles smaller than the atom Murray Gell

Description:

James Chadwick discovers the neutron. Murray Gell-Mann proposes the existence of quarks. Quarks are the fundamental particles that make up protons and neutrons. Then in the late 1890s the discovery of electrons with particals smaller and simpler than atoms were known.

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Date:

jan 1, 1964
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~ 55 years ago
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