Light, photometry and illumination : a thoroughly revedof ''Electrical illuminating engineering'' . ngsten lamp and corresponds toabout 10 watts per mean spherical candle, or lumens perwatt. The Moore tube fed with carbon dioxide gas has been proposedas a standard of color values and its performance in this respectas iTidicated in the preceding table certainly justifies its choice sofar as other artificial illuminants are concerned It has been COLOR VALUES OF ILLUMINANTS 27 found entirely suitable and satisfactory for matching all spectrum consists of many lines and bands so lo
Light, photometry and illumination : a thoroughly revedof ''Electrical illuminating engineering'' . ngsten lamp and corresponds toabout 10 watts per mean spherical candle, or lumens perwatt. The Moore tube fed with carbon dioxide gas has been proposedas a standard of color values and its performance in this respectas iTidicated in the preceding table certainly justifies its choice sofar as other artificial illuminants are concerned It has been COLOR VALUES OF ILLUMINANTS 27 found entirely suitable and satisfactory for matching all spectrum consists of many lines and bands so located 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 different consists essentially of a number of small booths with likecolored objects displayed in each booth, and each booth illumi-nated by a different type of lamp. The construction of such a. CJontinuous Red, Green and Blue Ribbons extend theEntire Length of the Lumichromoscope.
Size: 2415px × 1034px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectlight, bookyear1912
