Laboratory exercises in physics for secondary schools (1906)
Twiss, George Ransom, b. 1863 · Chicago, Scott, Foresman and company · leaf 24
minute. Another observer, B, draws the pendulum aside through a small arc. A notes the hour, and when the second hand is nearly at zero, i LABORATORY EXERCISES IN PHYSICS says Keady! Just when the second hand reacheszero, he says Now! and B instantly lets go the pendulum, beingvery careful notto… … Fig. 1. when heNow. (5) Whentime agreedsay 100 sec.Eeady. B said theon,hasthen nearly elapsed he again saysfollows the motion of the pendulum with his hand,keeping in time with its rhythmic motion, so he canstop it just where it is when A gives the word.When the 100th second is completed, A…
Physics
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