๐”– Bobbio Scriptorium
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Some Improved Electrical Laboratory Apparatus.

โœ Scribed by Johnson, Chas. Morris


Book ID
127146973
Publisher
American Chemical Society
Year
1915
Weight
320 KB
Volume
7
Category
Article
ISSN
0095-9014

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๐Ÿ“œ SIMILAR VOLUMES


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io to i : 5 ยฐ . The reproduction of tones by photography can be followed by means of the graphic solution designed by L. A. Jones (Communication No. 88). A photographer must consider three variables in the process: (I) The contrast of the subject ; (2) the contrast scale o f the negative, ~, ; (3) t