Lectures on light, delivered in the United States in 1872-'73; with an appendix (1873)
Tyndall, John, 1820-1893 · New York, Appleton · leaf 153
nters a gradually-augmentingheat. The red itself possesses the highest heatingpower of all the colors of the spectrum. Pushing thepile into the dark space beyond the red, the heat risessuddenly in intensity, and, at some distance beyondthe red, attains a maximum. From this point the heatfalls… … MAGNITUDE AND POSITION OF INVISIBLE KADIATION. 149 tional in length to the heat existing at those points, weobtain a curve which exhibits the distribution of heatin our spectrum. It is represented in the adjacent fig-ure. Beginning at the blue, the curve rises, at firstvery gradually; then as it…
Optics
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