Star-land; being talks with young people about the wonders of the heavens (1899)
Ball, Robert Stawell, Sir, 1840- [from old catalog] · Boston and London, Ginn & company · leaf 365
re. Thesecolors are very beautiful, but they are transient, for themoment we take away the prism they all unite again toform white light. You see what the prism has done;it has bent all the light in passing through it; but it ismore effective in bending the blue than the red, and 352 STAR-LAND.… … Fig. 85. — How to split up a Ray of Light. it is separated into its components; then we comparewhat we find with the lights given by the differentelements, and thus we are enabled to discover the sub-stances which exist in the distant object whose light wehave examined. I do not mean to say that…
Astronomy
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