Otto Lummer
German physicist (1860-1925) · Germany · On the map · Scientists · Died at 64
Otto Richard Lummer was a German physicist and researcher. He was born in the city of Gera, Germany. With Leon Arons, Lummer helped to design and build the Arons-Lummer mercury-vapor lamp. Lummer primarily worked in the field of optics and thermal radiation.
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Lummer's findings, along with others, on black body radiators led Max Planck to reconcile his earlier Planck's law of black-body radiation by introducing the quantum hypothesis in 1900. In 1903, with Ernst Gehrcke, he developed the Lummer-Gehrcke interferometer. Lummer died in former Breslau, now Wrocław.