Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 525
X 1250 3.0 Adiam in fiBarea in p sions the calculations were made assuming the grains to be flat.The ratios of thickness to projective diameter are given in Table I. Oct.. 192^.] Studies in Photographic Sensitivity. 511 Experimental Data on the Sensitometry. The characteristic curves for the…
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