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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 ...
Drawing of Geissler tubes illuminated by their own light, from 1868 French physics book, showing some of the many decorative shapes and colors Modern recreation of a Geissler tube in a museum A Geissler tube is a precursor to modern gas discharge tubes , demonstrating the principles of electrical glow discharge , akin to contemporary neon ...
Heinrich Göbel: Inventor of Hemmer for Sewing Machines, 1865, [6] Vacuum Pump (Improvement of the Geissler-System of vacuum pumps, 1881 [7] and Electric Incandescent Lamp (sockets to connect the filament of carbon and the conducting wires), 1882 [8] Kurt Gödel: Important discoveries in math and logic, such as the incompleteness theorems
Heinrich Rudolf Hertz's work in the domain of electromagnetic radiation was pivotal to the development of modern telecommunication. [9] Karl Ferdinand Braun invented the phased array antenna in 1905, [ 10 ] which led to the development of radar , smart antennas and MIMO , and shared the 1909 Nobel Prize in Physics with Guglielmo Marconi "for ...
A beam of cathode rays in a vacuum tube bent into a circle by a magnetic field generated by a Helmholtz coil.Cathode rays are normally invisible; in this demonstration Teltron tube, enough gas has been left in the tube for the gas atoms to luminesce when struck by the fast-moving electrons.
The lamp consisted of a Geissler tube that was excited by a battery-powered Ruhmkorff induction coil; an early transformer capable of converting DC currents of low voltage into rapid high-voltage pulses. Initially the lamp generated white light by using a Geissler tube filled with carbon dioxide. However, the carbon dioxide tended to break down.
Scientific glassblowing is a specialty field of lampworking used in industry, science, art and design used in research and production. Scientific glassblowing has been used in chemical, pharmaceutical, electronic and physics research including Galileo's thermometer, Thomas Edison's light bulb, and vacuum tubes used in early radio, TV and computers.
Heinrich Geißler (1814–1879), German physicist; Martin Geissler (born 1971), Scottish news reporter; Phillip Geissler (1974–2022), American theoretical chemist; Siegfried Geißler (1929–2014), German composer, conductor, hornist and politician; Sina-Aline Geißler (born 1965), German writer and journalist; William Geissler (1894–1963 ...