5 апр 1879 г. - Sir William Crookes

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Discovered cathode rays had the following properties: travel in straight lines from the cathode; cause glass to fluoresce; impart a negative charge to objects they strike; are deflected by electric fields and magnets to suggest a negative charge; cause pinwheels in their path to spin indicating they have mass.

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8 дек 2017

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Nedo Matic Atomic timeline

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