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Philipp Lenard. By: Andrew Kapperman. Who?. Born at Pozsony, Austria-Hungary on June 7 th , 1862 Discovered Cathode Rays Married Katharina Schlehner Died May 20, 1947. Cathode Rays. Stream of electrons leaving the negative electrode. Cathode Ray Tubes: Invented by Karl Ferdinand Braun.

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philipp lenard

Philipp Lenard

By: Andrew Kapperman

slide2
Who?
  • Born at Pozsony, Austria-Hungary on June 7th, 1862
  • Discovered Cathode Rays
  • Married Katharina Schlehner
  • Died May 20, 1947
cathode rays
Cathode Rays
  • Stream of electrons leaving the negative electrode.
  • Cathode Ray Tubes:
  • Invented by Karl Ferdinand Braun
cathode ray tubes
Cathode Ray Tubes
  • Used in:
      • Computer monitors
      • Automated teller machines
      • Video game machines
      • Video cameras
      • Oscilloscopes
      • Radar displays
before he discovered
Before He Discovered…
  • 1886 – Got Ph.D.
  • 1892 – Privatdozent and assistant to Professor Hertz
  • 1894 – Appointed Professor Extraordinary at University of Breslau
  • 1894 – Published the Principle of Mechanics
before he discovered1
Before He Discovered…
  • 1898 – Appointed Professor Ordinarius at the University of Kiel
  • 1896 – Became Professor of Physics at Aix-la-Chapelle
quick fact
Quick Fact
  • In 1902 Lenard showed that an electron must have a certain minimum energy before it could product ionization when it passed through a gas
bibliography
Bibliography
  • http://nobelprize.org/nobel_prizes/physics/laureates/1905/lenard-bio.html
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