Word: carbon
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Dates: during 1930-1939
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...years ago the Society of Automotive Engineers and the American Petroleum Institute joined forces and appointed this committee to find a uniform scale by which the knock-reducing quality of fuels could be expressed. At that time they explained that knocking is not directly caused by valves or carbon but by irregular and too rapid explosion of gasoline injected into cylinders overheated by any cause?insulating carbon deposits, lime coatings in the cooling system, faulty oiling...
...Twenty years ago, July 4 was ushered in with 18-in. cannoncrackers which sounded like quarry blasts. These, largest ever made. were constructed with a heavy cardboard case two-thirds filled with saltpetre, carbon and sulphur. In those days, long before and after July 4 fireworkmen were billed like vaudeville teams about the country, the wonders of pyrotechny were displayed to smalltown folk in parks and pastures. Greatest spectacle of these traveling companies was "The Last Days of Pompeii," a morality pageant on a 576-ft. canvas topped by a 70-ft. Vesuvius. Climax of the spectacle came when...
...until the 19th century did pyrotechny make big advances. Prior to this time saltpetre, carbon, sulphur made up the colorless displays. As various metal salts were discovered they were introduced to make colors in fireworks. Strontium and lithium salts give red: barium and copper, green; other copper salts blue. Last great advance was the discovery that magnesium and aluminum salts impart white brilliance to fireworks...
Union Carbide & Carbon...
...United Carbon...