1 янв 1897 г. - J.J. Thomson discovers the electron
Описание:
In his expirement, a cathode ray was deflected away from a negatively-charged electric plate and towards a positively-charged plate. This indicated that the cathode ray was composed of negatively-charged particles, which are called electrons.Добавлено на ленту времени:
Дата:
1 янв 1897 г.
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~ 128 г назад