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The complex history behind the electron or vacuum tube. ... A vacuum tube also called a electron tubes is a sealed glass or metal-ceramic enclosure used in electronic circuitry to control the flow of electrons between the metal electrodes sealed inside the tubes. The air inside the tubes is removed by a vacuum.
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inventors.about.com/od/uvstartinventions/a/Vacuum_tube....
inventors.about.com/od/uvstartinventions/a/Vacuum_tube.htm
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We also have a large supply of used vacuum tubes in stock ... We stock radio and vacuum tubes for every application from all major manufacturers including RCA, GE, Sylvania, Raytheon, Tungsol, and Amperex. If you are looking for a hard to find vacuum tube, we can nearly guarantee that it is in our inventory and...
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www.vacuumtubes.net/
www.vacuumtubes.net/
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The vacuum tube didn't reach its full maturity until Lee De Forest came along a decade later. De Forest invented something he called the "audion." Not only did it force current to move in a single direction, but it could be used to increase the current along the way.
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www.pbs.org/transistor/science/events/vacuumt.html
www.pbs.org/transistor/science/events/vacuumt.html
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when the vacuum sucks up things it goes through the tube and into the bag ...Unless you are talking about electronics, then a vacuum tube is used to form an amplifying circuit. Some tubes can emit cathode rays onto a screen (Cathode Ray Tub...
http://wiki.answers.com/Q/What_are_vacuum_tubes_used_fo...
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Electronics Engineering question: Are vacuum tubes used in technology today? Yes! Radar and lasers, not to mention some forms of Strobe Lights use specialized variants of Vacuum tubes, as do older Television ... What uses vacuum tubes? Are vacuum tubes used today? Are vacuum tubes still used today? What theorem is used...
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wiki.answers.com/Q/Are_vacuum_tubes_used_in_technology_...
wiki.answers.com/Q/Are_vacuum_tubes_used_in_technology_today
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The term space charge is used to refer to the charge due to the electrons occupying the inter-electrode space. The space charge plays a crucial role in controlling the flow of current, which is at the heart of the controlled amplifying action of the vacuum tube.
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www.john-a-harper.com/tubes201/
www.john-a-harper.com/tubes201/
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Amplifier Research: Physics of Vacuum Tubes ... Vacuum Tube Amplifier: Used as Repeater on a New York to Washington Cable Circuit ... Vacuum Tube Amplifier Repeater: Used in Transcontinental Circuit by AT&T...
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www.bell-labs.com/org/physicalsciences/timeline/span3.h...
www.bell-labs.com/org/physicalsciences/timeline/span3.html
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