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Philipp Lenard

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The native form of this personal name is Lénárd Fülöp Eduárd Antal. This article uses Western name order when mentioning individuals.

Philipp Lenard
Lenard in 1905
Born
Philipp Eduard Anton von Lenard

(1862-06-07)7 June 1862
Bratislava, Slovakia, then known as Pozsony, Kingdom of Hungary, Austrian Empire
Died20 May 1947(1947-05-20) (aged 84)
Messelhausen, Allied-occupied Germany
CitizenshipHungary[4]
Germany
Alma materUniversity of Heidelberg
Known for
Awards
Scientific career
FieldsPhysics
Institutions
Doctoral advisorRobert Bunsen
Georg Hermann Quincke[1]
Doctoral studentsEdward Andrade[2]
Walther Kossel[3]: 461 

Philipp Eduard Anton von Lenard (German: [ˈfɪlɪp ˈleːnaʁt] ; Hungarian: Lénárd Fülöp Eduárd Antal; 7 June 1862 – 20 May 1947) was a Hungarian-German physicist and the winner of the Nobel Prize in Physics in 1905 for his work on cathode rays and the discovery of many of their properties. One of his most important contributions was the experimental realization of the photoelectric effect. He discovered that the energy (speed) of the electrons ejected from a cathode depends only on the frequency, and not the intensity, of the incident light.

Lenard was a nationalist and anti-Semite; as an active proponent of the Nazi ideology, he supported Adolf Hitler in the 1920s and was an important role model for the "Deutsche Physik" movement during the Nazi period. Notably, he labeled Albert Einstein's contributions to science as “Jewish physics”.

  1. ^ Cite error: The named reference NobelBio was invoked but never defined (see the help page).
  2. ^ Andrade, E.N. da C. (July 1962). "Some Personal Reminiscences." (PDF). In Ewald, P.P. (ed.). 50 Years of X-ray crystallography. Chester, England: International Union of Crystallography. ISBN 978-1-4615-9961-6.
  3. ^ Hellner, E.E.; Ewald, P.P. (1962). "Germany" (PDF). In Ewald, P. P. (ed.). Fifty Years of X-Ray Diffraction: Dedicated to the International Union of Crystallography on the Occasion of the Commemoration Meeting in Munich July 1962. Boston, MA: Springer US. doi:10.1007/978-1-4615-9961-6. ISBN 978-1-4615-9963-0.
  4. ^ "Lénárd Fülöp (1862–1947)". Sulinet (in Hungarian). Archived from the original on 16 November 2007.

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