Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 664
ac- T T 2 644 On Li<rht. [677- charimeter fixed horizontally on its foot, and fig. 622 gives a longitudinalsection. The principle of this instrument is not that of observing the amplitudeof the rotation of the plane of polarisation, as in Biots apparatus, but thatof compensation; that is to say,… … Fig. 621 Instead of measuring the deviation of the plane of polarisation, the thick-ness is measured which the plate of quartz must have in order to obtainperfect compensation. The apparatus consists of three parts—a tube containing the lit|uid to beanalysed, a polariser, and an analyser. The tube…
Physics
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