Collins, A. Frederick (Archie Frederick), 1869- · New York, London, D. Appleton and company · leaf 79
he beginning of things the planets were a part of the 58 THE BOOK OF THE STARS Sun, as we shall see further on, and when they were thrown offby him they spun round their own axes, and they continued to spinround their axes just as a ball continues to do so after it has leftthe pitchers hand. The… … TANGENT Fig. 64.—Boy Throwing Stone to Illustrate Centrifugal Force. known, and you can find out for yourself by making th§following experiment. Take a stone and tie one end of a string to it; now swingthe stone round in a circle; if the string should break, or youshould let it go accidentally (on…
Astronomy · Stars
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