Ernst Pringsheim, Sr.

Ernst Pringsheim sen. ( Born July 11, 1859 in Wroclaw, Lower Silesia, † June 28, 1917 ibid ) was a German physicist in Berlin and Breslau.

Ernst Pringsheim came from an extremely wealthy Silesian merchant family of Jewish descent. He studied at various German universities, received his doctorate in 1882 with a thesis on the radiometer as PhD. habilitated professor. From 1896 to 1905 he was professor at the universities of Berlin, where his collaboration with Otto Lummer began, and from 1905 in Wroclaw. His specialty was optics.

In 1881 he developed a spectrometer with the first wavelength in the infrared region could be measured correctly. In 1899, he led with Otto Lummer by careful measurements with black bodies and published the results. The results formed a year later the basis for a revolutionary theory of the young German scientist Max Planck. Planck decided not to consider the energy of a black body as a continuous variable. He developed from his quantum hypothesis.

Writings

• About the radiometer. Berlin:. Lange, 1882 Berlin, University, Dissertation, 1882.
• A wavelength measurement in the ultra-red solar spectrum. In: Annals of physics and chemistry. New Series, Volume XVIII, 1883.
• With Otto Lummer: A determination of the ratio (x ) of the specific for air, ocxgen, carbon - dioxide and hydrogen. ( = Smithsonian Contributions to Knowledge; 29.6 = 1126 Hodgkins Fund) Washington: Smithsonian Inst, 1898.
• Lectures on the physics of the sun. Leipzig: Teubner, 1910.