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 366
mentioned, be mixed and confufed, in the fame Proportionas they are in that Image, Whitenefs is produced; which alfoproves, that in that Refped the Rays are unchangeable. TheRays that come from the Sun appear white, but if they are fe-parated, their Colours are difcovered ; and, if they be mixed… … ^ ^\a,»^ji. I Chap. 23. of NaturalPhilofophy. 257 Rays of the Image R V are mixed together; there will be a Wiiite-nefs at A, if with a black Paper you intercept the red Colour of theImage RV, the white will vauifh, and the Colour at Abebluifli; but ifyou intercept the violet and blue Rays, the…
Physics · Natural Sciences
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
