tube
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tube

Or electron tube in electronics, a glass tube containing gas at low pressure, which is used to control the flow of electricity in a circuit. The electron tube valve was invented by US radio engineer Lee de Forest (1873–1961). Three or more metal electrodes are inset into the tube. By varying the voltage on one of them, called the grid electrode, the current through the tube can be controlled, and the tube can act as an amplifier.

Tubes have been replaced for most applications by transistors. However, they are still used in high-power transmitters and amplifiers, and in some hi-fi systems.

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1878 245 BC aeolipile anemometer anencephaly atomizer Babcock, George Herman Békésy, Georg von bloodworm boiler Booth, Hubert Cecil Bourdon gauge bristle-worm Bunsen burner capillarity cathode ray cathode-ray oscilloscope cathode-ray tube centrifuge			2005) reported experimental results that illustrated the convective heat transfer coefficient of graphite nanoparticles dispersed in liquid for laminar flow in a horizontal tube heat exchanger. Performance augmentation of a water chiller system using nanofluids by Liu, M.S.; Hu, R.; Lin, M.C.C.; Wang, C.C.; Liaw, J.S. / ASHRAE Transactions If the design space, for example, includes 2 off-the-shelf tube diameters, a range of acceptable tube lengths--represented by 20 discrete lengths, 5 tube rows, 10 vertical and horizontal tube spacings, 10 fin spacings, 5 fin patterns, and 10 tube circuitries, then the number of possible heat exchanger designs becomes 106 designs. "Optimization" and HVAC&R by Radermacher, Reinhard; Abdelaziz, Omar / HVAC & R Research Imagine an enclosed horizontal tube with flexible vertical discs carrying the tea along in the proper direction (although the tubes in real life travel in any direction). How to convey tea: a drag that's not a drag: a first-hand account on ... by Seidel, Karl / Tea & Coffee Trade Journal			hoplite Höpner, Erich Hoppe, Willie Hopper, Dennis Hopper, Edward Hopper, Grace Hopper, Hedda Hoppner, John hops Hopson, Howard C Hoquiam Horace Horae Horatius Cocles Hordaland Horder, Thomas Jeeves, 1st Baron Horder of Ashford Hordern, Michael horehound Horenstein, Jascha Horgen Horigome, Yuzuko horizon Horizon chimérique, L' horizontal horizontal integration horizontal tube Horkheimer, Max Horley Hormel, George A hormone hormone-replacement therapy Hormuz horn horn fly Horn Signal, Symphony with the Horn, Arvid Bernhard, Count Horn Horn, Cape Horn, Charles Edward Horn, Gyula Horn, Karl Friedrich Horn, Philip de Montmorency, Count of Horn Hornaday, William Temple hornbeam Hornbeck, Stanley K hornbill hornblende Hornblower, Josiah Hornbostel, Erich von Hornby v. Close Hornby, Nick Horncastle			Horizontal tabulation Horizontal tabulation Horizontal tabulation Horizontal Tactical Display Horizontal Tactical Display System Horizontal Tactical Display Unit horizontal tail Horizontal Take-Off Horizontal Take-Off and Landing Horizontal Takeoff & Landing Horizontal Takeoff Horizontal Landing Horizontal Takeoff Vertical Landing Horizontal Technology Integration Horizontal Technology Integration Office Horizontal Technology Integration Second Generation FLIR Horizontal Technology Integration Working Group Horizontal Telescope Horizontal Test Facility Horizontal Third Page Horizontal Third Pages Horizontal Time-Dependent Positioning horizontal toothbrushing Horizontal training horizontal transmission horizontal transmission horizontal transmission horizontal transmission Horizontal Transmit, Horizontal Receive Horizontal Transmit, Vertical Receive horizontal tube Horizontal tying Horizontal Ultrathin Gel Electrophoresis horizontal uncertainty level horizontal union horizontal union Horizontal Unions Horizontal Unions horizontal vee Horizontal Velocity Horizontal Vertical Colors Horizontal Vertical Squeeze Casting horizontal vertigo Horizontal Vestibulo-Ocular Reflex horizontal vibrating needle horizontal violence horizontal violence horizontal violence horizontal violence Horizontal Visible Iris Diameter Horizontal Visual Analogue Scale Horizontal Volute Spring Suspension Horizontal water wheel Horizontal Weather Depiction Horizontal, Form Fill and Seal Horizontal, Horizontal Polarization horizontal, of teeth plane horizontal, of teeth plane horizontal, of teeth plane horizontal, of teeth plane horizontal, of teeth plane

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tube (redirected from horizontal tube)

tube

tube
(redirected from horizontal tube)