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Gas filled tubes operate by Ion izing the gas to get conduction. Both hot and cold cathode type devices are encountered. Depending on application, either Glow Discharge or Arc discharge may be emphasised. SWITCHING GAS FILLED TUBES Some important examples include the Thyratron , Krytron , and Ignitron tubes. LIGHTING AND DISPLAY GAS FILLED TUBES Specialized low-pressure gas filled tube devices include the Nixie Tube (used to display numerals) and the Decatron (used to count or divide pulses, with display as a secondary function). Neon Signage and Neon Lamp s are other types of low-pressure gas filled tubes. Xenon Flash Lamp s are gas filled tubes used in Camera s and Strobe Light s to produce bright flashes of light. OTHER TYPES OF GAS FILLED TUBES A type of gas filled tube called the Geiger-Müller Tube is used to detect and measure Ionizing Radiation . One of the proposed designs for a fusion reactor is basically a gas filled tube, the Farnsworth-Hirsch Fusor . A tube in which electrons move through a vacuum (or gaseous medium) within a gas-tight envelope is called an ''electron tube''. SEE ALSO EXTERNAL LINKS
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