Natural philosophy. being a hand-book of chemical physics, or, The physics of heat, light and electricity (1869)
Sangster, John Herbert, 1831-1904 · Montreal : J. Lovell · leaf 76
Refraction. 2nd. By Absorption. NEWTON S SPECTRUM.NEWTONS SPECTRUM. 69 171. Light is decomposed by refraction by placing a triangu-lar glass prism opposite a small hole perforated in the shutterof a darkened room, and causing the admitted ray to fall, afterpassing through the prism, upon the wall… … .y:^ .^ Thus, SHis a ray of white light passing through a small hole in thoshutter E F, and then through the triangular glass prism A B C. Thebeam of light, instead of passing on in a straight line to P, is bent out of itscourse aud disi)ersed iuto a spectrum, A L, exhibiting the seven…
Physics
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