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Light, photometry and illumination : a thoroughly rev. ed. of ''Electrical illuminating engineering'' (1912)

Barrows, William Edward, 1878-1960 · New York ; London : McGraw-Hill Book Co. · leaf 26

An illustration from Light, photometry and illumination : a thoroughly rev. ed. of ''Electrical illuminating engineering'', 1912, leaf 26 — ute figuring much gold) .24 .19 Light green and gold (mi- nute figuring much gold).. .31 .28 Deep and light red .12 .20 Pique Light bluish .46 .47 Light gray .38 .38 Effect of Varying the Angle of Incidence upon Reflection.— Investigations by Mr. Gilpin^ show the effect of varying theincident angle… … 0 15° 30 a Fig. 3.—Pulp tint, white.

Light · Photometry · Electric lighting

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