The supposed “ low visibility ” of khaki uniforms has been shown to be imaginary by recent investigations of the Chemical Warfare Service of the United States army. Experiments with new binoculars show that khaki, which is a blend of red. orange, and green, appears red through a methyl-violet ray filter. The problem on which the expert's are now working is to eliminate the orange and green which can be separated by tha Slter.
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Bibliographic details
Evening Star, Issue 18333, 21 July 1923, Page 3
Word Count
72Page 3 Advertisements Column 4 Evening Star, Issue 18333, 21 July 1923, Page 3
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