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August 1, 2025
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JJ discovered the Electrons (jan 1, 1897 – dec 31, 1897)

Description:

In 1897, J.J. Thomson discovered the electron by experimenting with a Crookes, or cathode ray, tube. He demonstrated that cathode rays were negatively charged. In addition, he also studied positively charged particles in neon gas.

Added to timeline:

5 Oct 2018
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Date:

jan 1, 1897
dec 31, 1897
~ 12 months