50 years ago, physics underwent a major revolution
Excerpt from the November 23, 1974 issue of Science News
Physicists Samuel Ting (shown) and Burton Richter independently discovered the subatomic particle J/psi in 1974. It quickly led to more discoveries that confirmed quarks are fundamental building blocks of matter.
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A surprising new particle — Science News, November 23, 1974
To add to the present ferment and confusion in particle physics, nature now presents the oddest new particle to turn up in many years….