Chemical induction in photographic development. I. Induction and the watkins' factor

✍ Scribed by S.E. Sheppard; G. Meyer

• Book ID: 104122802
• Publisher: Elsevier Science
• Year: 1920
• Tongue: English
• Weight: 141 KB
• Volume: 189
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(20)91218-8

✦ Synopsis

A TUKBIDIMETER for definite thickness of fluid is described. It is based on the continuously variable visibility of a standard object, consisting of two crossed gratings which can be rotated in opposite directions about' a common axis.

It is shown that for the practical limits of working if A,,,,, be the angle for the visibility limit for any standard medium, e.g., distilled water, lacquer solvent, etc., and if A be the angle for the same thickness of turbid solution, then putting A,,,,