Experimental engineering and manual for testing. For engineers and for students in engineering laboratories (1906)
Carpenter, Rolla C. (Rolla Clinton), 1852-1919 · New York, J. Wiley & Sons; [etc., etc.] · leaf 418
s pyrometric telescope meas-ures the temperatures by taking advantage of the rotation of theplane of polarization of light passing through a quartz plate cut § 304-] MEASUREMENT OF TEMPERATURE. 387 perpendicular to its axis. The angle of rotation is directly pro-portional to the thickness of the… … Fig. 185.—Mesure and Nouel Pyrometric Telescope. nicol P, and, traversing the quartz plate Q, strikes the analyzer A,and is seen through the eye piece OL. In the use of the instrument the analyzer is turned until theobject appears to have a lemon-yellow color. The position of
Building materials · Machinery
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