j.j thomson discovery of electrons practical work
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Joseph John Thomson (J. J. Thomson, 1856-1940 at American Institute of Physics) is widely recognized as the discoverer of the electron. Thomson was the Cavendish professor of Experimental Physics at Cambridge University and director of its Cavendish Laboratory from 1884 until 1919.
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1. In this process , he used a special glass tube called discharge tube.
2. In this process , he applied a high voltage connected to the two metallic electrodes i.e. Cathode(-ve) and Anode (+ve).
3. In this process, a gas (any gas) is introduced when electric current passed through this tube. Then, Radiation (ray) is produced towards anodes. Since, Radiation is emitted from negative electrode (Cathode). So, we can conclude that electron has negative charge.
2. In this process , he applied a high voltage connected to the two metallic electrodes i.e. Cathode(-ve) and Anode (+ve).
3. In this process, a gas (any gas) is introduced when electric current passed through this tube. Then, Radiation (ray) is produced towards anodes. Since, Radiation is emitted from negative electrode (Cathode). So, we can conclude that electron has negative charge.
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