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cathode ray tube |
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cathode ray tube (CRT), a vacuum tube that focuses a beam of electrons onto a spot on a screen coated with a phosphor, creating a visible image of information on the face of the tube. The CRT is one type of computer monitor. cathode (kath´ōd), n a negative electrode from which electrons are emitted and to which positive ions are attracted. In radiographic tubes, the cathode usually consists of a helical tungsten filament, behind which a molybdenum reflector cup is located to focus the electron emission toward the target of the anode. cathode ray tube (CRT), n a vacuum tube in which a beam of electrons is focused to a small point on a luminescent screen and can be varied in position to form a pattern. cathode ray tube See Video display unit. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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LG Philips is a Hong Kong-based maker of cathode ray tubes (CRTs) used in televisions and monitors. Television and computer monitors use cathode ray tubes (CRTs), which have a significant amount of lead. Those electronics are now banned from California landfills because the cathode ray tubes and liquid crystal display or LCD monitors contain toxic metals that can leach from dumps over time. |
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