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 42
ocated as togive the same practical effect as a continuous spectrum. Objectsilluminated by it are claimed to have the identical shades ofcolor they would possess in average diffused daylight. The lumichromoscope^ was designed for making practicalcomparisons of the color effects of light from… … CJontinuous Red, Green and Blue Ribbons extend theEntire Length of the Lumichromoscope.
Light · Photometry · Electric lighting
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
