Introductory course of natural philosophy for the use of schools and academies. Ed. from Ganot's popular physics. By William G. Peck (1869)
Ganot, Adolphe, 1804-1887, Peck, William Guy, 1820-1892 · New York A.S. Barnes · leaf 198
nt by the aid of astandard mercurial thermometer. Leslies Differential Thermometer. 191. Leslies DifferentialThermometer is shown in Fig.136. It differs from Rumfords,in having the bulbs smaller, andin containing a longer column ofliquid in the tube. The scalesare placed by the sides of thevertical… … Fig. 136. 192. A Pyrometer is an instrument for measuringhigher temperatures than can be observed by means of themercurial thermometer. The most important pyrometers are those of Wedgewoodand Brogniart. The former is founded on the diminutionof the volume of clay at high temperatures, and the…
Physics
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