Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 235
ry,we may have, as in the photographic plate, animpression which is chemical instead of mechanical, displayingitself to the eye only when treated with a suitable developer. Abar of steel hammered on an anvil is changed in properties; as itbecomes closer in texture its tenacity is increased. When… … Aladdin oven. 1 Published by Damrell & Upham, Boston. $1.00. RECURRENT STRESSES 101 are never the same afterward as before, and usually their ex-perience does them harm. Says an eminent engineer, Mr. W.Anderson : The constant recurrence of stresses, even those withinthe elastic limit, causes…
Inventions · Inventors
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