Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 200
Alcohol lamp withventilating hood. NEW ELECTRIC LAMPS 159 metal remains unmelted at a very high temperature, but as alight-giver its quality is poor. Of late years investigators have … Welsbach mantle. turned to other metals, of high melting points, and with resultsso remarkable that we may expect some of them to be in generaluse in the near future. Tantalum, a rare and costly metal, hasbeen found to give a candle-power with as little as two watts and,in specially favorable…
Inventions · Inventors
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