Duff, A. Wilmer (Alexander Wilmer), b. 1864, ed, Guthe, Karl Eugen, 1866-1915, Hallock, William, 1857-1913, Lewis, E. Percival (Exum Percival), 1863-1925, Goodspeed, Arthur W. (Arthur Willis), b. 1860, Carman, Albert Pruden, b. 1861, McClung, Robert Kenning, 1874- · Philadelphia, P. Blakiston's Son & Co · leaf 207
re soldered together,the compound strips will on be-coming warmer curve towardsthe side of the metal least af-fected by the temperature rise or,if the strip is bent into a spiralspring, it will twist or untwistwith a change of temperature.This principle is employed inBreguets strain thermometer(see… … THERMOMETRY. 191 perature (see Electricity). By measuring its resistance thetemperature of the wire can be accurately determined. Siemensintroduced the resistance thermometer in 1871, but it has beengreatly improved by Callendar, who coils a fine wireof pure platinum around a mica frame and…
Physics
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