[{WikipediaArticle oldid='235515096'}]

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!!!License Information of Images on page
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| The Wikimedia Commons logo, SVG version.| Original created by Reidab ( PNG version ) SVG version was created by Grunt and cleaned up by 3247 . Re-creation with SVG geometry features by Pumbaa , using a proper partial circle and SVG geometry features. (Former versions used to be slightly warped.)| Reidab , Grunt , 3247 , Pumbaa| [{Image src='https://www.austria-forum.org/cc/images/slim/by-sa.png' alt='CC BY-SA 3.0' align='center' link='https://www.austria-forum.org/cc/by-sa-30.html' target='_blank'}]| Datei:Commons-logo.svg
| 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".| 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'.| M. Rapine| [{Image src='https://www.austria-forum.org/cc/images/slim/publicdomain.png' alt='Public domain' align='center' link='https://www.austria-forum.org/cc/public-domain-10.html' target='_blank'}]| Datei:Geissler tubes.jpg
| | | | [{Image src='https://www.austria-forum.org/cc/images/slim/publicdomain.png' alt='Public domain' align='center' link='https://www.austria-forum.org/cc/public-domain-10.html' target='_blank'}]| Datei:Heinrich Geissler.jpg
| Heimatmuseum Geißlerhaus, 18./19. Jh. Elternhaus von Heinrich Geißler, Neuhaus am Rennweg, Sonneberger Straße 106| Selbst fotografiert| Störfix| [{Image src='https://www.austria-forum.org/cc/images/slim/by-sa.png' alt='CC BY-SA 3.0 de' align='center' link='https://www.austria-forum.org/cc/by-sa-30.html' target='_blank'}]| Datei:Neuhaus-aR-Sonnebergerstr106.jpg
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