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jan 1, 1897 - J.J. Thomson discovers the electron

Description:

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.

Added to timeline:

Atomic History Project

ByArseniy Nechaev
22 Sep 2023
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Date:

jan 1, 1897
Now
~ 129 years ago

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