Cooke, Josiah Parsons, 1827-1894 · Boston, Little, Brown and Company · leaf 525
e of a class of instruments called pyrometers. One of thesimplest and most convenient of these is represented in Fig. 370.It consists essentially of the metallic rod A, one end of which isfirmly secured to a brass pillar by means of the clamp-screw B,while the other end, which is free to expand,… … heat; 601 the graduated arc. Instruments constructed on the same prin-ciple have been employed by Daniels and others for measuringhigh temperatures ; but since they have been superseded by the
Matter · Heat
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