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Philipp Lenard

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

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  1. Philipp Lenard By: Andrew Kapperman

  2. Who? • Born at Pozsony, Austria-Hungary on June 7th, 1862 • Discovered Cathode Rays • Married Katharina Schlehner • Died May 20, 1947

  3. Cathode Rays • Stream of electrons leaving the negative electrode. • Cathode Ray Tubes: • Invented by Karl Ferdinand Braun

  4. Cathode Ray Tubes • Used in: • Computer monitors • Automated teller machines • Video game machines • Video cameras • Oscilloscopes • Radar displays

  5. 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

  6. Before He Discovered… • 1898 – Appointed Professor Ordinarius at the University of Kiel • 1896 – Became Professor of Physics at Aix-la-Chapelle

  7. 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

  8. Pictures

  9. Cathode Ray Tube

  10. Comic

  11. Pictures

  12. Bibliography • http://nobelprize.org/nobel_prizes/physics/laureates/1905/lenard-bio.html

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