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Johann Heinrich Wilhelm Geißler (26 May 1814 in Igelshieb – 24 January 1879) was a skilled glassblower and physicist, famous for his invention of the hand pumped Geissler mercury vacuum pump in the mid-1850's and in 1857, the Geissler tube, made of glass and used as a low pressure gas-discharge tube; these two inventions were critical ...
A Geissler tube is a precursor to modern gas discharge tubes, demonstrating the principles of electrical glow discharge, akin to contemporary neon lights, and central to the discovery of the electron. [1]: 67 This device was developed in 1857 by Heinrich Geissler, a German physicist and glassblower.
Crookes tubes evolved from the earlier Geissler tubes invented by the German physicist and glassblower Heinrich Geissler in 1857, experimental tubes which are similar to modern neon tube lights. Geissler tubes had only a low vacuum, around 10 −3 atm (100 Pa), [6] and the electrons in them could only travel a short distance before hitting a ...
Heinrich Geißler (1814–1879), German physicist Martin Geissler (born 1971), Scottish news reporter Phillip Geissler (1974–2022), American theoretical chemist
Pre-MachtergreifungArndt; Burnouf; Chamberlain; Drumont; Eckart; Fritsch; de Gobineau; Grant; von Liebenfels; von List; Löns; Lueger; Marr; Nietzsche (Contentious ...
The Knight's Cross of the Iron Cross and its higher grades were based on four separate enactments.The first enactment, Reichsgesetzblatt I S. 1573 of 1 September 1939 instituted the Iron Cross (Eisernes Kreuz), the Knight's Cross of the Iron Cross and the Grand Cross of the Iron Cross (Großkreuz des Eisernen Kreuzes).
Born Heinrichjosef Georg Geißler [2] in Gleisweiler, [3] he studied law and philosophy in Munich and Tübingen, where he graduated in 1960.. From 1967 to June 1977, Geißler was minister of the state government of Rhineland-Palatine, serving prime ministers Peter Altmeier, Helmut Kohl and Bernhard Vogel.
1856 glassblower Heinrich Geissler confines the electric arc in a Geissler tube. 1867 Edmond Becquerel demonstrates the first fluorescent lamp. [6] 1874 Alexander Lodygin patents an incandescent light bulb. 1875 Henry Woodward patents an electric light bulb.