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 348
, is diminifhd, and they have a different Refrangibility; the Image is alfo weakend. Neverthelefs the Colours become but a little more perfedt by this * 3502. Method, the firft is to be preferd *. 3506. But if we would have the Colours more lively, and at the fameTime more homogeneous, we have them… … ^ .vrv/«-«v /i if; Chap. 20. of NaturalPhilofophy. 2,47 Inch ; the Diredtion of thefe is horizontal, and at the Diftance of eight Feet from the Hole they fall upon the convex Lenfe L, which coUedls parallel Rays at the Diftance of four Feet; if thefe Rays run againft a white Plane at the fame…
Physics · Natural Sciences
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