Newcomb, Simon, 1835-1909, Holden, Edward Singleton, 1846-1914, joint author · New York, H. Holt and Company · leaf 90
thus throwing the centre ofoscillation away from the point of suspension ; at thesame time the expanding mercury rises in the cylinder,and tends therefore to raise the centre of oscillation.When the length of the rod and the dimensions of thecylinder of mercury are properly proportioned, the… … Fig. 27.—gridironpendulum. 73 ASTRONOMY. The correction of a chronometer (or clock) is the quantity of time(expressed in hours, minutes, seconds, and decimals of a second)which it is necessary to add algebraically to the indication of thehands, in order that the sum may be the correct time. Thus,…
Astronomy
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