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jan 1, 1897 - J.J. Thomson

Description:

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:

6 Jan 2020
0
0
160
Andrew's atomic theory

Date:

jan 1, 1897
Now
~ 127 years ago
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