The book of stars; being a simple explanation of the stars and their uses to boy life, written to conform to the tests of the Boy scouts (1915)
Collins, A. Frederick (Archie Frederick), 1869- · New York, D. Appleton and company · leaf 79
ing to stop them. If you spin a top on a plate it may keep going for a longtime, but it will finally die down and stop. This is becausethere are other forces which oppose its centrifugal force. Theforces a spinning top has to overcome are friction between thepoint of its spindle and the plate, and… … Fig. 66. — Iron Ball PendulumSwinging in Curved Line. THE PLANETS, THE SUNS KIDDIES 61 But if you could spin and throw a top far enough away fromthe Earth so that it would not meet with friction or resistanceof any kind, it would go on spinning forever just like theplanets. How to Plot the Position…
Astronomy · Stars
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