Burgess, G.K. · National Bureau of Standards · leaf 11
334; 1907. 2o6 Bulletin of the Bureau of Standards. [ Vol. 5, No. 2. Photographic Recorders.—Among the earliest photographicrecorders we may mention the apparatus of Roberts-Austen6(Fig. i) in which the photographic plate P was given a verticalmotion, either by clockwork, or, in order to secure… … Fig. 1. galvanometer gave the corresponding temperature, and a beam oflight from the source h reflected from the galvanometer mirror Mand incident on the plate, after passing through a fine slit 5 placedhorizontally before the moving plate, gave directly on the latterthe time-temperature curve.…
Measurements and use of instruments · Heat flow, thermal and thermodynamic processes
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