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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 103

An illustration from 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, leaf 103
What is the 212. Platform scales, and scales intendedconstrucu™^ for wciglilng hay, etc., are usually compoundscales? levers, and are constructed in very various forms, but all depend on tlie principles above explained.Iig. 69 represents one of the varieties, and Fig. 70 a sec- FiG. 70. … THE ELEMENTS OF MACHINERY. 99 tion of tlie same, showing the arrangement and combination of the levers. 213. When a lever is applied to raise a ■weight or overcome WhatWheelAxle? stances limit ^ resistance, the space through which it acts at any one time the utility of jg small, and the work must…

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Internet Archive · University of Toronto Libraries · Public Domain Mark 1.0. Free to use for anything.

More pictures from 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

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