Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 226
lidification all lie between 3700 and 465°. This fall of 95° wasspread over an interval of four weeks, instead of a few days asformerly, with the result that stress was banished utterly. A practical example of the benefits gained in the properties ofJena glass is exhibited by its use in measuring… … Photograph by Briiunlich & Tesch. THE LATE PROFESSOR ERNEST ABBE, OF JENA. JENA GLASS 183 change day by day, as in a less degree do those of many alloys.It was one of the aims of the Jena laboratory to produce a glasswhich should remain constant in its dimensions while exposed tovarying…
Inventions · Inventors
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