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 220
fopJacd, that the Focuswill fly off tO;an infinite Diftance, that is, the refraSied Rays will become parallel. 2959. If the radiayit Point be brought nearer, the Rays that are refraSiedwill diverge ; but yet lefs than the incident Rays, if the radiant Point,be more dijia^it from the Surface than… … ■n Chap. 8. of NaturalPhikfophy, 157 Experiment 9. We make ufe of the long Box AB which is open at the 2962,Sides*; acrofs this, at right Angles is placd the fmaller Box P1.93.F.I,FE -f, in fuch a Pofition, that the Rays, which enter the greater* 2755.Box through the Hole d^ and follow the…
Physics · Natural Sciences
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