The outlines of physics: an elementary text-book (1897)
Nichols, E. L. (Edward Leamington), 1854-1937 · New York, The Macmillan Company; London, Macmillan & Co., Ltd. · leaf 222
&) Present faces Nos. 1, 2, 3, and 4 in succession to the face ofthe thermopile, and note the behavior of the galvanometer. It will TRANSMISSION OF HEAT 207 be found that when the radiation is that received from the lamp-blacked face, the deflection is greatest, and when from the polishedmetal… … Fig. 170. energy to the face of the pile at the same temperature. The changesof temperature which the cube undergoes during the progress of theexperiment will be extremely small, — so small that they need not betaken into account. It will be seen from this experiment that at thesame temperature…
Physics
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