Word: emits
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Dates: during 1980-1989
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...reduce pollution would be to get stoves to burn at higher temperatures so they would emit less waste. Manufacturers have developed smaller, more efficient stoves. But poor burning practices abound. Homeowners sometimes toss green, moist wood into their fires, along with rubbish and newspapers. (The EPA recommends wood that has been air-dried at least a year.) Mark Loding, a chimney sweep who practices his Dickensian craft in the Charlevoix-Petoskey-Harbor Springs area of Michigan, is appalled by the fire making habits of his customers. Says he: "Chimneys are clogged with nasty stuff. People are putting in too much...
...basic mechanism of lasers is now familiar: they emit a concentrated stream of intense light powerful enough to melt metal. Experimental U.S. lasers have tracked and destroyed small missiles in flight; last May in California the Airborne Laser Lab was 5 for 5 firing at supersonic Sidewinders. But a device powerful and precise enough to be practical for nuclear defense cannot yet be built...
...Korean Air Lines Flight 007. The flight data inside would probably answer some of the questions about how and why the wayward aircraft met its fate. The waterproof container is heavily reinforced to survive impact and ocean depths down to 20,000 ft. For 30 days it will automatically emit a sonar signal that can be heard for up to five miles under water. Many of these boxes have been recovered in the past, but if the one from KAL Flight 007 is in Soviet waters it may never be made available to the U.S. or Korea for analysis. Even...
Security-minded companies have added their own panoply of defensive measures. Many high-technology firms have installed electronic gear that rivals their own products in sophistication. Ultrasonic motion detectors emit high-frequency sound waves that can instantly sense intruders. Invisible infrared beams of light set off alarms as they are broken. Rolm Corp., a Silicon Valley computer manufacturer, uses an electronic control room to monitor its extensive protection system...
...instance, until recently astronomers beleived that black holes were cold and didn't emit radiation This seemed logical since the gravitational of a black hole would be strong enough to keep any radiation from escaping But Steven Hawking, applying the theory of quantum mechanics to black holes, proved that they do give off radiation, in other words, black holes are sort of gray...