Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 195
a call A, X the corresponding coeffi-cients of expansion. Then, in order that the length of thependulum shall be invariable, L\t-LXt = 0. Whence L VL~ X1 that is, the length of each material must be inversely as itscoefficient of expansion. 141. Compensated Balance Wheel. — Fig. 144 shows the… … Fig. 144. The effect of EXAMPLES. 185 expansion on the rim is to throw the free end of each seg-ment nearer the center, and thus correct the temperaturechanges in the elasticity of the hair-spring by the change inthe moment of inertia of the balance wheel. EXAMPLES. 1. A steel chain is 66 feet long…
Physics
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