jj thomson

jj thomson

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  • JJ Thomson was a physicist and he Discovered the negative charge (electron) in every atom in 1897
  • He helped the revolutionize the knowledge of atomic structure
  • He performed experiments studying cathode rays and discovered that they were unique particles, later name electrons.
  • Ernest Rutherford overturned Thomson’s model in 1911 with his experiment gold foil
  • Dalton thought atoms were invisible particles and Thomson’s discovery of the electron proved the existence of subatomic particles.
  • Thomson discovered the mass spectrometry along with other inventions.
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