Word: bulbs
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Dates: during 1950-1959
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Flash Test. To help camera users eliminate poor pictures caused by faulty flashbulb connections, Westinghouse brought out a bulb to test synchronizers on cameras, the first such simple testing device. The bulb fits in either smooth-surface or threaded sockets. Price...
...aluminum, which he hammers into shape on wooden frames. He is affectionately called by Nash "the world's greatest fender bender." Farina lives more like a mechanic than a high-priced designer, sleeps in a room in which a bed is the only piece of furniture, a naked bulb the only light. He allows himself one luxury: a window air-conditioning unit...
...burned-out light bulb, as Inventor Thomas Edison knew, uses no electricity. Therefore, Tom Edison made it a rule for his power companies to replace burned-out bulbs without charge. It was an invisible cost on the light bill, but it kept the customer happy-and kept him buying Edison's power. Obvious as Edison's wisdom was, it was lost on many of his successors. Almost alone among big utilities, Detroit Edison Co. still gives away light bulbs. Partly because of this and similar consumer service policies, Detroit Edison, already the sixth biggest U.S. power company...
...them, more than 500 of the company's 11,625 employees are kept busy; 47 service trucks cruise the Detroit area night & day to replace lamps and fuses, fix appliances, install lead-in wires for electric stoves, etc. For new homes the crews install up to 40 light bulbs free, thereafter replace any that burn out, requiring only the old bulb or the metal end in exchange...
Fluorescent lights, when operating properly 1) are not "a general nuisance." On the contrary, they provide pleasant diffused light. 2) do not irritate the eyes: a fluorescent tube has a luminance of approximately 1 candle/cm 2, whereas a frosted bulb has a luminance of about 5 c/cm 2. To use a favorite American expression, doctors recommend that the eyes should not be subjected to a luminance of more than 2 c/cm. 2. 3) do not hum unless the ballast is defective. 4) do not flicker. But even if fluorescent lights had all those defects, I do not see how they...