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a C1: Lenard's trigger hypothesis to explain the photoelectric effect; C2: Einstein's quantum hypothesis to explain the photoelectric effect; C3: Lack of acceptance of Einstein's quantum hypothesis in the scientific community; C4: Millikan's experimental determination of the Einstein photoelectric equation and Planck's constant, h; C5: Millikan ...
Philipp Lenard was born in 1862, Bratislava, in Austria-Hungary (today Slovakia). He studied physics successively at Budapest, Vienna, Berlin and Heidelberg, and received his Ph.D. at Heidelberg in 1886. After serving as professor at the universities of Kiel (1898-1907) and Heidelberg (1896-98, 1907-31), he headed the Philipp Lenard Institute ...
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- Disliked Wine Business
- Worked with Heinrich Hertz
- Theorized About Atoms
- Suffered Several Personal Setbacks
- Praised Hitler in Newspaper Articles
- Books
- Online
The future Nobel winner was born Philipp Eduard Anton von Lenard on June 7, 1862, in Pressburg, the Slovakian city that later became Bratislava. His family was of Austrian heritage, from the Tyrol, and lived comfortably from the income of his father's business as a wine merchant. It was hoped that Lenard, too, would enter into the wine trade and so...
From Heidelberg, Lenard went to England in 1890 for a job at the electromagnetic and engineering laboratories of the City and Guilds of the London Central Institution. He remained there less than a year, however, and came away with a lifelong disdain for the country and even its scientific community. Over the next decade, Lenard switched jobs sever...
Lenard's other significant contribution to science involved the photoelectric effect, or what happens when a beam of light strikes a metal plate. Electrons are emitted from the plate, and Lenard found that their intensity was dependent on the brightness of the incident light. He also found that the speed of the electrons remained unchanged. Explain...
This shift occurred around the same time that Lenard's son, Werner—from his 1897 marriage to Katherine Schlehner—died from the aftereffects of malnutrition in February of 1922. Several years earlier, during World War I, England had blockaded Germany, cutting off food supplies, and it was the youngest Germans who suffered most. Werner never fully re...
The incident served to crystallize Lenard's belief that his country was becoming clearly divided by ideology, and he wholeheartedly threw his support to conservative side—the emerging Nazi Party, which called for the removal of Jews from German political, social, and cultural institutions. When Nazi Party leader Adolf Hitler began serving a jail se...
Beyerchen, Alan D. Scientists Under Hitler: Politics and the Physics Community in the Third Reich, Yale UniversityPress, 1977. Encyclopedia of the Holocaust,2 vols., Macmillan Reference USA, 1995. Notable Scientists: From 1900 to the Present,edited by Brigham Narins, Gale, 2001.
"Philipp Lenard—Biography," Nobelprize.org, http://nobelprize.org/physics/laureates/1905/lenard–bio.html (December 19, 2004).
In 1898 he was appointed professor of experimental physics at Kiel. He returned to Heidelberg in 1907, where he remained until his retirement in 1931.Lenard's career falls naturally into two distinct periods. Before 1914 he made several major contributions to fundamental physics. In particular he investigated the photoelectric effect.
Lenard was the first person to study the separation of electric charges that accompanies the aerodynamic break up of droplets of water. This is known as "spray electrification", "the waterfall effect", or the "Lenard effect". Lenard conducted studies that explored the size and shape distributions of raindrops.
Philipp Eduard Anton von Lenard was a Hungarian-born German physicist and the winner of the Nobel Prize for 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 ...
May 1, 2023 · Most of them, for their part, did not claim any priority, some did so rather casually. The German-Hungarian physicist Philipp Lenard, a co-founder of German Physics, considered himself a “true discoverer”. It remains to be said, however, that he, like many others before him, failed to recognize the character of the new radiation.
