Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 666
r/1 rt HH (N H^ ►-4 o ? ? ? ? ? lO ? ? t/J > < 2§ r) C) c; C) O O o o o o rt^ M rO •I- ID hH w fo ■>*■ lO o Nov., 1921.] Photomicrographic ]\Iethod. 657 250, 1200-1500, and 7851 particles. The probable errors shownin the columns are due to the fact that the average diameter isderived from… … Timinox, 2^0 Diameters. This is the type of pigment photomicrograph commonly found in the Hterature on paint.It is not suitable for particle measurement. The magnification and resolving power, under whichthe photomicrograph was taken, were both very much too low. It is impossible to detect…
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