1 jan 1897 ano - Discovery of Electrons
Descrição:
J. J. Thompson began to experiment with cathode ray tubes in the late 19th century. He placed two oppositely charged plates on either side at the end of the tube. The cathode rays deflected the negatively charged plate which led him to believe the ray consisted of negatively charged particles. He came to the conclusion that these negative subatomic particles can be found within the atom.
Adicionado na linha do tempo:
Development and Discovery of Atomic Theory, the Periodic Table, and Radiation
Kelsey West
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