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cathode ray

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cathode ray

Stream of fast-moving electrons that travel from a cathode (negative electrode) towards an anode (positive electrode) in a vacuum tube. They carry a negative charge and can be deflected by electric and magnetic fields. Cathode rays focused into fine beams of fast electrons are used in cathode-ray tubes, the electrons' kinetic energy being converted into light energy as they collide with the tube's fluorescent screen. The electrons are emitted from the heated metal cathode by a process called thermionic emission.



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? Mentioned in ? References in periodicals archive
 
LG Philips is a Hong Kong-based maker of cathode ray tubes (CRTs) used in televisions and monitors.
Ecoglass secures LG Philips contract by Recycling Today
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.
ELECTRONICS BUYERS TO PAY NEW RECYCLING TAX TOXIC WASTE FOUND IN ... by Daily News (Los Angeles, CA)
Nine of 30 cathode ray tubes from color computer monitors passed the standard shredded-parts test even though separate tests have shown that most of these tubes contain huge amounts of lead (SN: 11/4/00, p.
Testing computers' hazardous potential by Science News
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