A text book of physics, for the use of students of science and engineering (1918)
Duncan, John, d. 1941, Starling, Sydney George, 1873- · London Macmillan · leaf 346
at 357° C. ; hence ordinary mercurial ther-mometers can be used only for temperatures somewhat lower thanthis. High temperatures may be stated sometimes with sufficientaccuracy by reference to the known melting temperatures of certainsubstances. Thus we may say that the temperature of a body… … FIG. 341.—Temperaturein a steam pipe. 322 HEAT chap. been employed for rough determinations of the temperature offurnaces. Substances used in this way are called thermoseopes. The temperature of a flue or furnace may be estimated by insertinga piece of platinum, copper, or other substance, allowing…
Physics
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