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The rotating earth as a reference system for light propagation

✍ Scribed by L. Silberstein

Publisher: Elsevier Science
Year: 1925
Tongue: English
Weight: 98 KB
Volume: 199
Category: Article
ISSN: 0016-0032
DOI: 10.1016/s0016-0032(25)91113-1

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✦ Synopsis

THE general conclusion is that superficial scratches and a surface skin do not definitely affect the mechanical strength of motion picture film support. The effect of a scratch is determined by its depth affecting the thickness of the film. Except when near perforations, lateral scratches, less than one inch in width, do not appreciably affect the strength of the film support. Scratches made lengthwise the test piece have no effect on the strength.

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