cathode ray

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cathode ray

[′kath‚ōd ¦rā]
(electronics)
A stream of electrons, such as that emitted by a heated filament in a tube, or that emitted by the cathode of a gas-discharge tube when the cathode is bombarded by positive ions.

cathode ray

In the early part of the 20th century, it was the first name given to electron beams emitted from a negatively charged cathode in a vacuum tube. The term has been used ever since. See CRT.
References in periodicals archive ?
Almunia said the violations were especially harmful for consumers, as cathode-ray tubes accounted for 50 to 70 percent of the price of a screen.
"These are likely to be the integrated digital televisions, whereas at the moment people are using cathode-ray tube TVs and set top boxes which give off a lot of energy as heat.
It covers traditional cathode-ray tubes (CRTs), flat CRTs, and LCD flat panels.
So what's responsible for this potential embarrassment of cathode-ray riches?
As well as costing less, the new screen eats up much less power than a bulky cathode-ray tube, according to the New Scientist magazine.
While they are bulky, heavy, and require large amounts of power, cathode-ray tubes are still less expensive to produce than other display systems for computer monitors and televisions: Skion Corp., Hoboken, NJ, is at work developing a field emission display (FED), a smaller, lighter, lower-power alternative that will match CRTs in performance and price.
The European Commission said Thursday it will impose provisional antidumping duties on imports of cathode-ray picture tubes for color televisions from India, Malaysia, China and South Korea.
The software can be used with magnetrons, accelerators, electron tubes, cathode-ray and x-ray tube devices, cyclotrons, and high-voltage corona effects.
The TFT LCD monitor is expected to start replacing traditional cathode-ray tube monitors at a rapidly increasing rate with one in every two consumers buying a monitor in Japan this year expected to choose the LCD option.
But what really worries me is that television is broadcasting frequencies that are shooting into space as cathode-ray ambassadors.
On November 5, 1895, he set his cathode-ray tube to working, and in the dimness, a flash of light that did not come from the tube caught his eye.
The company booked an extraordinary loss of 16.6 billion yen stemming from the suspension of operation of some furnaces for cathode-ray tube glass due to weakening demand.