An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 553
sensitive galvanometer makes an excellentelectrical thermometer for detecting excessively small differencesof temperature and has been successfully used in the examina-tion of the heat spectrum. 340. Thermogalvanometer. An even more sensitive devicefor detecting small heating due to radiation… … Fig. 347. — Rubensthermopile. ELECTRIC HEATING 495 mutli .soldered to a minute disk of copperfoil (Fig. 348). A rise of temperature of onemillionth of a degree will generate currentenough in the loop to cause a deflection of onescale division. This instrument is called theBoys radiomicrometer and…
Electricity · Magnetism
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