Subatomic Particles

When were subatomic particles discovered?
Answered by Science Channel
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    Science Channel

  1. The first subatomic particle was discovered in 1897, when British physicist J.J. Thomson discovered the electron. By the 1950s, physicists had isolated numerous other subatomic particles. In 1964, Murray Gell-Mann and George Zweig independently theorized that the subatomic particles known to exist at that time could be broken down into even smaller components; Gell-Mann referred to these tiny particles as quarks. By the 1980s, strong evidence existed that Gell-Mann and Zweig's theory was correct, and the theory of quantum chromodynamics explained the behavior of quarks.

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