Elementary treatise on physics, experimental and applied : for the use of colleges and schools (1906)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, Reinold, A. W. (Arnold William), 1843-1921 · New York : Wood · leaf 435
parts, which can be clamped by meansof screws. The source of heat, S, is a platinum spiral, kept 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… … Fig. 406 in which turns an axis that supports a metallic mirror tn. About this axisturns an arm, R, on which is fixed the thermopile, P, in connection with thegalvanometer G. H is a screen, the object of which is to cut off any directradiation from the source of heat towards the pile ; in order not…
Physics
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