Elements of theoretical and descriptive astronomy, for the use of colleges and academies (1901)
White, Charles J · New York: J. Wiley & sons · leaf 76
ely unnecessary, andis made only for the sake of illustration ; for there will be noapparent change in the plane of vibration, whatever may bethe direction in which the pendulum is made to vibrate. The apparent rotation, then, of the plane of vibration of thependulum is 360° in 24 hours at the… … 70 LINEAR VELOCITY OF ROTATION. 24 hours. Appropriate investigations show that the apparentangular motion of the plane of vibration at any place in anyinterval of time is equal to the angular amount of the earthsrotation in that time, multiplied by the sine of the latitude ofthe place* Thus, at…
Astronomy
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