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 407
ept at a white heat ina spirit lamp. A screen K, when raised, cuts off the radiation from the source ;a second screen, F, with an aperture in the centre, cuts off all rays except apencil which falls upon the mirror ;//. At the other end is an upright rod, I, witha graduated dial, the zero of which… … on which is fixed the thermopile, P, in connection with the galvanometer G ;H is a screen, the object of which is to cut off any direct radiation from thesource of heat towards the pile. In order not to mask the pile, it is not re-presented in the position it occupies in the experiment. By lowering…
Physics
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