๐”– Bobbio Scriptorium
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The Development of the X-Ray Negative

โœ Scribed by Rose M. Lorish

Book ID
124044112
Publisher
Lippincott Williams and Wilkins
Year
1921
Tongue
English
Weight
220 KB
Volume
21
Category
Article
ISSN
0002-936X

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THE characteristic curve of " Duplitized " X-ray film does not show a straight line por~ion in the range of useful densities, the average slope of the curve over the density range 0. 5-2.0 is taken as a measure of the contrast, and speed is proportional to the reciprocal of the exposure required to