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 41
accurately measured, is divided intoten milUon equal parts; and a single tenmillion til part adopted as a measure oflength, and called a metre. The length ofthe metre is about 39 English inches. Bymultiplying or dividing this quantity by ten,the other varieties of weights and measuresare obtained.… … PRACTICAL PROBLEMS ON THE ATTRACTION OF GRAVI-TATION. 1. Suppose two bodies, one weighing 30 and the other 90 pounds, situated ten milesapart, were free to move toward each other, under the influence of mutual attraction:what space would each pass over before they came in contact ? The mutual…
Physics · Science · Technology
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