1905 Nobel Prize in Physics
Gold medal of Nobel Prize Electron beam or Cathode rays are streams of electrons observed in discharge tubes. In 1888 Lenard had done his first work with cathode rays when he was working at Heidelberg under Quincke. Lenard investigated the view then held by Hertz that cathode rays were analogous to ultraviolet light and Lenard did an experiment to find out whether cathode rays would pass through a quartz window in the wall of a discharge tube like ultraviolet light. Ultraviolet Light Lenard found that cathode rays wouldn't do that. But later in 1892, when he was working as an assistant to Hertz at the University of Bonn, Hertz called him to see the discovery he made that if a piece of uranium glass covered with aluminium foil put inside the discharge tube became luminous beneath the aluminium foil when the cathode rays struck it. Hertz suggested that by means of a thin plate of aluminium it would be possible to seperate two spaces, one in which the cathode rays are produced in ...
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