Transactions of the Society of Motion Picture Engineers (1929)

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38 Transactions of S.M.P.E., Vol XIII, No. 37, 1929 than fifteen (15) seconds; the biirnmg time being defined as the total time (in seconds) required for the combustion (of a sample of standard dimensions) as determined according to the procedure of the Underwriter 's Laboratories. Size of standard sample for determination of burning time: Length — 36 inches, 914.4 mm. Thickness— 0.005 to 0.006 inch, 0.122 to 0.152 mm. Width— 0.63 to 1.378 inches, 16 to 35 mm. PIMEN5I0N ANP POSITION OF SOUNP TRACK ARtA 35 mm COM&INE-P 50UNP ANP picture: positive. Fig. 4. Summary of Action taken on the report of the Standards and Nomenclature Committee The following items as proposed by the Standards and Nomenclature Committee and modified during the discussion of the report received the initial approval of the Society. These must now stand for six months, after which they will again be presented to the Society for final adoption. 1. Taking speed for standard 35 mm. sound pictures shall be 24 pictures per second.