Luckiesh, Matthew, b. 1883 · New York, D. Van Nostrand company · leaf 114
ANALYSIS OF COLOR 89 which illuminates a ground flashed-opal glass, can be removed from its present position if desired and attached at B. When the comparison source in A … Fig. 43. — A small portable spectrophotometer for quantitative analysis. is in the position shown the unknown source is placed at B. The sleeve, O, was placed on the instrument to support A. S controls the slit widths. A mi- crometer screw with a graduated scale and drum is attached at M to the…
Color
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