J.J. Thomson experiment

J.J. Thomson experiment

Storyboard Text

  • After too much of my efforts and a lot of work, I think my ideas are finally clear. Thanks to my experiments with the cathode ray tube, I finally discovered something. I will call it, electron.
  • The model of an atom does not account for negatively or positively charged particles, the atom was a sphere but the positive and negative charges were embedded within it, the atom is formed by charged particles. What else can I add? I guess I will be thinking and writing all night
  • In 1897, Joseph Jhon Thomson discovered the electron. He started making experiments with the cathode ray tube. He demonstrated that the cathode rays were negatively charged.
  • I will propose the plum pudding structure. The negative electrons are going to represent the raisins in the pudding and the dough will contain the positive charge.
  • He started writing all of his discoveries and theories of what he thought in a book.
  • He was very tired of all his efforts and experiments that he was doing so he ended up sleeping.
  • Thomson's model of the atom did explain some of the electrical properties of the atom due to the electrons but failed to recognize the positive charges in the atom as particles.
  • This is the plum pudding model of the atom.
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