cathode-ray tube


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cathode-ray tube

cath·ode-ray tube

 (kăth′ōd-rā′)
n.
A vacuum tube, formerly used in computer monitors and televisions, that electromagnetically or electrostatically deflects a focused cathode ray toward various points on a phosphorescent screen.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

cathode-ray tube

n
(General Physics) a valve in which a beam of high-energy electrons is focused onto a fluorescent screen to give a visible spot of light. The device, with appropriate deflection equipment, is used in television receivers, visual display units, oscilloscopes, etc. Abbreviation: CRT
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

cath′ode-ray` tube`


n.
a vacuum tube generating a focused beam of electrons, the terminus of which is visible as a luminescent spot or line on a screen at the broad end of the tube: used to display images on a television receiver or computer monitor. Abbr.: CRT
[1900–05]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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cathode-ray tube

A sealed tube in which electrons are made to escape from their atoms and move in a beam from the negatively charged end of the tube toward the positively charged end.
Did You Know? Cathode-ray tubes (also called CRTs) are the visual display units in such items as conventional television sets, computer monitors, hospital heart-monitoring devices, and laboratory oscilloscopes. They are generally made up of sealed glass tubes that have had the air drawn out of them. At one end of the tube is a phosphor-coated screen, and at the other end is an electron "gun." The gun is a cathode (in this case a negative electrode). It directs a beam of electrons, also called a cathode ray, toward the screen. Coils outside the tube create magnetic fields that steer the beam on its way toward the screen. When the beam strikes the screen, it causes the phosphors to glow, producing an image.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

cathode-ray tube

A vacuum tube and cathode forming the picture tube in television receivers.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cathode-ray tube - a vacuum tube in which a hot cathode emits a beam of electrons that pass through a high voltage anode and are focused or deflected before hitting a phosphorescent screen
Crookes tube - the original gas-discharge cathode-ray tube
electron gun - the electrode that is the source of electrons in a cathode-ray tube or electron microscope; consists of a cathode that emits a stream of electrons and the electrostatic or electromagnetic apparatus that focuses it
gas-discharge tube - a tube in which an electric discharge takes place through a gas
kinescope, picture tube, television tube - a cathode-ray tube in a television receiver; translates the received signal into a picture on a luminescent screen
cathode-ray oscilloscope, CRO, oscilloscope, scope - electronic equipment that provides visual images of varying electrical quantities
CRT screen, screen - the display that is electronically created on the surface of the large end of a cathode-ray tube
television system, television - a telecommunication system that transmits images of objects (stationary or moving) between distant points
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

cathode-ray tube

[ˈkæθəʊdˌreɪˈtjuːb] n (Elec) → tubo a raggi catodici
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
Japan's antitrust watchdog fines 5 firms over cathode-ray tube cartel
Panasonic, which changed its corporate name last week from Matsushita Electric Industrial Co., said the production threshold was achieved on the 56th year since the company began producing black-and-white cathode-ray tube TVs in 1952, one year before full-scale TV broadcasting started in Japan.
Turning to old cathode-ray tube technology for low power consumption and inky, cinema-like blacks at low light levels, the sets were expected to replace both plasma and LCD screens in the near future.
Figures from the Energy Saving Trust claim plasma TVs, which are 50% bigger than their standard cathode-ray tube equivalents, consume about four times the energy.
Built in 1971, and extended in 1995, the factory at its height was LG Philips' main cathode-ray tube plant in the UK with more than nine miles of internal conveyors producing 3.5 million tubes a year.
High luminance of 400cd/m2 and a wide color gamut of 72 percent, equivalent to that of a cathode-ray tube (CRT), are realized through NEC LCD Technologies' own unique UA-SFT technology, which boasts improved panel transmissivity (180 percent from A-SFT technology, and 120 percent from SA-SFT technology).
A standard, cathode-ray tube (CRT)--based television incorporates an electron gun.
If they still seem so emphatically stuck, even here, it is because they have not passed through the cathode-ray tube unscathed, remaining tethered to their former life source by way of an electronic umbilicus that may never be cut.
The battle has officially begun: sleek, flat-panel liquid crystal display (LCD) PC monitors are flooding the market and forcing the continued erosion of traditional cathode-ray tube (CRT) shipments.
Despite its leading share in standard cathode-ray tube (CRT) TVs, Sony is seen as having lingered too long in protecting that position, wasting time that rivals used to stride ahead in LCD technology.
Ironically, the growing popularity of LCD (liquid crystal display) and flat screen monitors is expected to have unfavorable effects on the closed-loop recycling process in the long term, just as state laws banning CRT (cathode-ray tube) devices from landfills have started to stabilize a system to recycle CRT glass.