A course of experiments in physical measurement (1897)
Whiting, Harold, d. 1895 · Boston, D.C. Heath and Co. · leaf 257
. — Instead of using a rod,as in.Rumfords photometer (Fig. 96), it is sometimes advantageous to em-ploy a partition (J, Fig.97). One half (d) ofthe screen, de, maythus be illuminated bythe candle (a), and theother half (e) by thelamp (J). The screenis made translucent, so that the intensities of… … Fig. 97. a. ■o- Fig. 98. in Fig. 98. The distances ad and ce are measureddirectly by a metre rod. If the angles of incidence, adh and ceb, differ bymore than 10°, it may be well to alter the screen deslightly so that its inclination to both rays may bethe same (^ 112, 5). H 114, III.] BOX…
Physics
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