Fitxer:Color expert for Uncle Sam. Washington, D.C., June 20. When it was discovered that color plays an important (role) in marketing of cotton, Miss Dorothy Nickerson, Color Technologist of the LCCN2016873729.jpg
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DescripcióColor expert for Uncle Sam. Washington, D.C., June 20. When it was discovered that color plays an important (role) in marketing of cotton, Miss Dorothy Nickerson, Color Technologist of the LCCN2016873729.jpg
English: Title: Color expert for Uncle Sam. Washington, D.C., June 20. When it was discovered that color plays an important [role] in marketing of cotton, Miss Dorothy Nickerson, Color Technologist of the U.S. Department of Agriculture, developed a method for measuring the color of raw cotton mechanically. The equipment comprises a comparator, a motor on which to spin standard color discs, the color discs, and standard artificial daylight. When looking through the comparator, the operator sees a circular field, the upper half made up of the color of the cotton and the lower half made up of the disc colors, 6/20/38
Abstract/medium: 1 negative : glass ; 4 x 5 in. or smaller
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