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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 By: Andrew Kapperman
Who? • Born at Pozsony, Austria-Hungary on June 7th, 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
Cathode Ray Tubes • Used in: • Computer monitors • Automated teller machines • Video game machines • Video cameras • Oscilloscopes • Radar displays
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 Discovered… • 1898 – Appointed Professor Ordinarius at the University of Kiel • 1896 – Became Professor of Physics at Aix-la-Chapelle
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 • http://nobelprize.org/nobel_prizes/physics/laureates/1905/lenard-bio.html