Elements of astronomy: accompanied with numerous illustrations, a colored representation of the solar, stellar, and nebular spectra, and celestial charts of the northern and the southern hemisphere (1875)
Lockyer, Norman, Sir, 1836-1920 · New York, D. Appleton and company · leaf 236
the second surface. 414. Dispersion of Light.—If we receive a beam thusrefracted by its passage through a prism, on a piece ofsmooth white paper, we shall have, instead of a spot ofwhite light of the size of the hole that admitted the beam,a lengthened figure made up of seven different colors… … A Prism, refracting a Eat of Light. consequence of refraction? Illustrate this with Fig. 88. 413. How is refractionbest studied ? How can refraction be shown with a prism ? 414. What is meantby the Spectrum ? Mention the colors of the spectrum in order. Why do thecolored rays occupy different…
Astronomy
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