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  • i am sir joseph john thomson and i am a english physicist
  • between 1856-1940 i preformed a series of experments ,in 1897 i designed to study the nature of electric dischagein a high-vaccum cathode-ray tube
  • i used to live in cheetham hill,manchester in england
  • but i moved away from manchester and moved my life works out to cmabrige, england
  • I did one of my investigations, back in 1897 conducting the cathode-ray experiment
  • In 1897 i reported that "cathode rays" were actually negatively charged particles in motion; he argued that the charged particles weighed much less than the lightest atom and were in fact constituents of atoms
  • later in 1897i discovered the electrons, and found the important of it as a constituent of ordinary matter.
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