Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 265
active power diminish:it follows that if this experiment istried under conditions which show aregular and measurable displacement ofthe fringes, their movement will in-dicate the temperature of the air. Thismethod has been applied to ascertainvery high temperatures, such as thoseof the blast… … Light-wave distorted in passing through heated air. AN UNVARYING UNIT 217 space requiring a good microscope to perceive, but readily meas-ured by an interferometer. It means a displacement amounting toseveral fringes, and this may be measured to within 1/50 of afringe or less; so that the whole…
Inventions · Inventors
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