1 янв 1886 г. - Eugene Goldstein
Описание:
Goldstein was a German chemist who lived from 1840-1930. He discovered canal rays, or positive rays, and that the positive charge of a proton is equal to the negative charge of an electron.Добавлено на ленту времени:
Дата:
1 янв 1886 г.
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~ 139 г назад