British Kinematography (1952)

Page scan 000208 from British Kinematography

Record Details:

Title:
British Kinematography
Date:
1952
Publisher:
London, British Kinematograph Society
Volume:
British Kinematography (1952)
Leaf #:
000208
Language:
English
Subjects:
Motion Pictures, Film Industry Technical Magazine
Collection:
United Kingdom, Global Cinema, and Hollywood Studio System
Format:
Periodicals
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Date Added:
June 13, 2024
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M BRITISH KINEMATOGRAPHY Vol. 21, No. 3 Fig. 2. Apparatus for tests on 16 mm. film. 18 in. for the 16 mm. film test. It was felt desirable to obtain this result for the sake of uniformity between the two tests. The apparatus which was used for testing specimens of 16 mm. film is shown in Fig. 2. It is essentially the same as that used for testing the 35 mm. film. The two semicircular supports, of 18 in. diameter, were mounted with their inside edges 12 mm. apart. A copper cup 1 cm. by 1 cm. by 0.3 cm. was Table II Distance of Spread of Flame on 16 mm. Safety Film Specimen Thickness in. x 10:! Mean distance of flame spread in. K. Processed — not hardened 5.6 12.5 K. Processed — hardened 5.7 6.5 L. Processed — not hardened 5.8 12.5 L. Processed — hardened 5.8 6 M. Processed — not hardened 5.3 11.5 M. Processed — hardened 5.3 7 N. Base 5.7 Film did not continue to burn after the alcohol flame had burnt out. N. Processed 6.3 Film did not continue to burn after the alcohol flame had burnt out. O. Base 5.7 5 O. Processed 5.9 6