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 354
ugh two narrow Holes, that its Diredlion may be well determind, and all the Rays may follow the fame Diredlion. The Hole, through which the Light is let in, muft, for this Reafon, be larger than in the foregoing Experiments, that the 3531 Light, which pafTes through^, may not be too weak. Thofe…
Physics · Natural Sciences
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