Stewart, Balfour, 1828-1887 · Toronto : James Campbell · leaf 112
diamonds ? Are not all these displays dueto the same cause ; and, if so, what is the cause ? Thediscovery of it is due to Sir Isaac Newton, who was thefirst to show that white light is in reality composed ofa great many differently coloured rays mixed together,and that those rays are in their… … Fi-. -,8. Supi)Ooe, for instance, that we have a narrow verticali)r up-and-down slit in the shutter of a darkened roomthrough which the full sunlight is allowed to pass ;—infig. 38 we have a plan of this arrangement lookingdown upon it from above, or taking, as it were, a birds-eye view of it. Now…
Physics
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