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20 dic 1897 año - Thomson showed that cathode rays were composed of previously unknown negatively charged particles, which he calculated must have bodies much smaller than atoms

Descripción:

Cathode Ray Tube

Añadido al timeline:

Jamiyah Polite & Anyliah Middleton

Byjamiyah
13 oct 2017
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703

fecha:

20 dic 1897 año
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~ 127 years ago
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