Rubens Wartenberg (3 results)

21 S. (SS. 169 - 190), Sprache: Deutsch Gewicht in Gramm: 60 Groß 8°, Original-Karton (Softcover), Deckel mit Namensstempel, insgesamt gutes und innen sauberes Exemplar,

S.ber. Akad. Wiss. Berl., 1914. - Berlin 1914, 8°, pp.169-190, 7 Fig., orig. Broschur; Umschl. etw. angeschm. Rare Offprint! Heinrich Rubens (1865-1922) physicist. He is known for his measurements of the energy of black-body radiation which led Max Planck to the discovery of his radiation law. This was the genesis of quantum theory. Rubens worked on electromagnetic radiation, particularly in the infrared. In 1900, he proved through measurements with Ferdinand Kurlbaum that Wien's law of radiation does not apply to the long-wave range. These precise investigations into the radiation of black bodies were essential for the development of the origins of quantum theory by Max Planck. He used the Auer gas incandescent light and proved that Planck's law of radiation also applies in the infrared part of the spectrum. He developed the method of Rubens' residual rays to generate infrared radiation and the Rubens flame tube named after him. He was regarded as a masterful experimenter who did not spare himself in his experiments (he carried out the precision measurement of blackbody radiation for a long time at night in winter in an unheated laboratory in favourable weather conditions). His lecture experiments were also considered exemplary. Hans Joachim von Wartenberg (1880-1960) Chemiker für Anorganische Chemie und Physikalische Chemie.

(25 x 18 cm). SS. 167-190. Mit Abbildungen. Rückenbroschur. Erste Ausgabe. - Sauber und gut erhalten. - DSB 11, 581.