) DISCOVERY OF ELECTRON.? Explain
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discovery discovery of electron was done by JJ Thomson in 1897 . buy cathode Ray experiment.
Discovery of electron
the discovery of electron is very interesting
in laboratory it is observed that in a discharge tube about 0.001 mmhg pressure and anode as well as cathode are presenting discharge tube at both end it is found that when current is given to the anode a shadow is seen at the back of cathode this prove that there must be a partial due to which shadow is formed.
when magnet is placed it is observed that the the Ray of light towards positive end of a magnet this prove there must be negative charge that's why it is attracted towards positive end.
after that a fan is place inside the discharge tube it is observed that the fan rotate when current passes in a discharge tube this prove that the ray have some mass