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16 mar 1897 ano - J J Thompson 1856-1940

Descrição:

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

Adicionado na linha do tempo:

Data:

16 mar 1897 ano
Agora
~ 128 years ago

Imagens: