Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 122
sixtieth of a revolution of the min-ute-hand, and a minute on the smallest watch isalso one sixtieth of a revolution of the minute-hand, and the time of the revolution is exactlythe same in the two. Therefore, a minute hasjust the same length on each. — E. F. B. If you will take a pencil and paper… … DIAGRAM OF A WATCH FACE PLACED WITHIN ACLOCK FACE. — a butter plate or the bottom of a vase may do,and draw another circle exactly in the middle ofthe larger one, you will be able to study the ques-tion. First make a dot at the center of the twocircles, and with a ruler or any straight edgedraw a…
Children's literature
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