The hiding power of white pigments and paints / by A.H. Pfund. (1926)
Pfund, A. H. · New Jersey Zinc Company · leaf 6
er, then, h\ means of a photo-electric cell, which measures the light from the two layers in contad a1 the edge B Fig. I it will be possible to locate the desired poinl vers accurately; 2) b\ mak- ing, preliminarily, a stud} of the variation of brightness of the painl with increasing thickness, a… … t,_ j the thickness yielding 99 per cent, of the brightness of the infinitely thick layer. These methods have not been developed for the reason that the cryptometer in its present form is not only sufficiently accurate for most purposes, but is extremely simple in it- construction and operation. A…
Paint · Paint pigments · Zinc
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