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Eugen Goldstein (/ ˈ ɔɪ ɡ ən / OY-gən, German: [ˈɔʏɡeːn ˈɡɔlt.ʃtaɪn, ˈɔʏɡn̩-]; 5 September 1850 – 25 December 1930) was a German physicist.He was an early investigator of discharge tubes, the discoverer of anode rays or canal rays, later identified as positive ions in the gas phase including the hydrogen ion.
Cathode rays or electron beams (e-beam) are streams of electrons observed in discharge tubes. If an evacuated glass tube is equipped with two electrodes and a voltage is applied, glass behind the positive electrode is observed to glow, due to electrons emitted from the cathode (the electrode connected to the negative terminal of the voltage ...
Goldstein called these positive rays Kanalstrahlen, "channel rays", or "canal rays", because these rays passed through the holes or channels in the cathode. The process by which anode rays are formed in a gas-discharge anode ray tube is as follows.
In 1876, Eugen Goldstein proved that they came from the cathode, and named them cathode rays (Kathodenstrahlen). [9] At the time, atoms were the smallest particles known and were believed to be indivisible, the electron was unknown, and what carried electric currents was a mystery. During the last quarter of the 19th century, many ingenious ...
The electron (e −, or β − in ... In 1876, the German physicist Eugen Goldstein showed that the rays were emitted perpendicular to the cathode surface, ...
1886: Discovery of anode rays by Eugen Goldstein [445] 1887: Discoveries of electromagnetic radiation, photoelectric effect and radio waves by Heinrich Hertz [446] 1887: First parabolic antenna by Heinrich Hertz [447] 1893–1896: Wien approximation (1896) [448] and Wien's displacement law (1893) [449] by Wilhelm Wien
In 2004, Goldstein, an Orthodox Jew, made headlines for being a crossdressing, porn and religion obsessed, “wacko” who beat his elderly roommate and landlord to death in a dispute over rent.
Studied discharge tubes with energy rays extending from a negative electrode, the cathode. These rays, which he discovered but were later called cathode rays by Eugen Goldstein, produced a fluorescence when they hit a tube's glass walls and, when interrupted by a solid object, cast a shadow. 1869: William Crookes: Invented the Crookes tube. 1873