Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 382
r architecture of rocks whenthese are sawn into thin sections. Even more valuable than polarized light are the X-rays dis-covered by Professor Rontgen. One of their latest uses is toreveal impurities and air bubbles in electric cables, affording aprocedure much simpler and easier than to employ… … Polarized light showing strains in glass. 328 EXPERIMENT adopted cocoanut charcoal with remarkable success. He subjectsit to the intense cold of liquid air, then establishing communica-tion between a receptacle filled with this charcoal and a bulb ex-hausted to one fourth of the ordinary…
Inventions · Inventors
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