1 янв 1899 г. - Ernst Rutherford Fritz Geisel, Antoine-Henri Becquerel, and Marie Curie prove that beta rays consist of high-speed electrons.

Описание:

- First malpractice lawsuit is awarded for x‑ray burns.
- discovers that radioactivity from uranium has at least two different forms, which he calls alpha
and beta rays.
- prove that beta rays consist of high-speed electrons.

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