Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 758
o that the fieldappears double, with a different illumination in each portion,except at the critical position. The latter may be judged o o D P N B 0 Fig. 191. with considerable precision by the contrast in the two partsof the field. Laurents Saccharimeter. The arrangement of parts inLaurents… … Fig. 492. whose angular position is accurately indicated by the gradu-ated circle and vernier, V, shown in Fig. 492, which repre-sents the complete instrument. The distinguishing feature 748 POLARIZATION.
Physics
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