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Electrons and X-Rays Wilhelm C. Roentgen 1845-1923 Nobel Prize 1901 Discovered X-Rays Joseph J. Thomson 1856 - 1940 Nobel Prize 1906 Discovered the Electron

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  • Electrons and X-Rays

    Wilhelm C. Roentgen 1845-1923 Nobel Prize 1901 Discovered X-Rays

    Joseph J. Thomson 1856 - 1940 Nobel Prize 1906 Discovered the Electron

  • ? ? Near Vacuum

  • q/m ratio results surprising 1000 x larger than q/m for charged hydrogen!

    Thomson presented three hypotheses about cathode rays based on his 1897 experiments: 1. Cathode rays are charged particles (which he called "corpuscles"). 2. These corpuscles are constituents of the atom. 3. These corpuscles are the only constituents of the atom.

    For More Information see AIP history of physics: Discovery of Electron

    http://www.aip.org/history/electron/

    http://www.aip.org/history/electron/jj1897.htmhttp://www.aip.org/history/electron/

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