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Mathematical elements of natural philosophy, confirm'd by experiments : or, An introduction to Sir Isaac Newton's philosophy (1747)

Gravesande, Willem Jacob 's, 1688-1742, Desaguliers, J. T. (John Theophilus), 1683-1744, tr, Adams, John, 1735-1826, former owner. BRL, John Adams Library (Boston Public Library) BRL · London : Printed for W. Innys, T. Longman and T. Shewell, C. Hitch ..., and M. Senex ... · leaf 294

An illustration from Mathematical elements of natural philosophy, confirm'd by experiments : or, An introduction to Sir Isaac Newton's philosophy, 1747, leaf 294
/prror, be continued out, with all the intermediate ones, their In-terfcBions will form the Curve F G, which all thofe Rays touch, andthe adjacent Rays interfed: one another in the Circumference of theCurve itfelf; fo that they always enter the Eye as if theyxame fromfojne Point of the Periphery;… … Chap. 15. of Natural Philofophy, 207 Toint does always appear*^ as lo?jg as the reflefted Rays can come * 3 122.to the Eye, and the Eye be moved in the Fla7ie going through the 3276.Center of the Sphere. But when the Eye is removed cut of that Plane,the radiant Poitit appears in fome other Curve,…

Physics · Natural Sciences

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