Image: Geissler tubes
Description: Color drawing of Geissler tubes lit by their own light, from an 1869 French natural philosophy book, showing some of the many fanciful shapes and colors. They were powered by high voltage from an induction coil. Invented by German glassblower Heinrich Geissler in 1857, Geissler tubes were the first gas discharge tubes and were manufactured for entertainment. Around 1910 they evolved into the first neon lights. Caption: "Electric discharge in rarefied gasses: 1.Discharge in Vapor of Alcohol. (2.3.4.5.Geissler's tubes enclosing rarefied gasses) 2.Shows Fluorescence of Sulphuret of Calcium, 4.Fluorescence of Uranium glass, 5.Shows Fluorescence of Sulphuret of Strontium, 6.Fluorescence of Uranium glass and Sulphate of Quinine".
Title: Geissler tubes
Credit: Downloaded 2008-12-30 from Augustin Privat Deschanel, Joseph David Everett (1896) Elementary Treatise on Natural Philosophy, Part 3: Electricity and Magnetism, 13th Ed., D. Appleton & Co., New York, p.2, Plate 2, translated from Privat Deschanel's 1869 Traité Élémentaire de Physique by Joseph David Everett on Google Book. Image credited in caption to 'M. Rapine'.
Author: M. Rapine
Permission: Public Domain in USA: Published in USA prior to 1923
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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