Well's natural philosophy : for the use of schools, academies and privte students, introducing the latest results of scientific discovery and research ; arranged with special reference to the practical application of physical science to the arts and the experiences of everyday life ; with three hundred and seventy-five engravings (1873)
Wells, David A · New York : Ivison, Blakeman, Taylor and Co. · leaf 106
as 2X3X4=24, is to 20X25X30=^15,000 ;—or a power of 24 at the first wheel willbalance 15,000 at the axle of the last wheel. 219. One of the most familiar instances of combined wheel-work is exhibited in clocks and watches. One turn of the axleon which the watch-key is fixed, is rendered equivalent,… … What arc fa-miliar illustra-tions of com-pound wheelwork? FlQ. 76. Fig. 77.
Physics · Science · Technology
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