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

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Cathode Ray Tube

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Jamiyah Polite & Anyliah Middleton

13 окт 2017

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Дата:

20 дек 1897 г.

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~ 127 г назад

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