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A vacuum fluorescent display (VFD) is a display device once commonly used on consumer electronics equipment such as video cassette recorders, car radios, and microwave ovens. A VFD operates on the principle of cathodoluminescence , roughly similar to a cathode-ray tube , but operating at much lower voltages.
The Turbo-Cat was a jet aircraft catapult launch system powered by six jet engines. It was invented by Don Doolittle, and manufactured by the All American Engineering Co. of Wilmington, Delaware, USA. Six Allison J33 engines in a capstan arrangement provided 50,000 horsepower directly to the launching cable. It was developed for expeditionary ...
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In meteorology, clear-air turbulence (CAT) is the turbulent movement of air masses in the absence of any visual clues such as clouds, and is caused when bodies of air moving at widely different speeds meet.