Accession Number:

AD0260050

Title:

TECHNIQUE FOR ANIMATION OF FILM STRIPS OF A 25- IMAGE FRAMING CAMERA

Descriptive Note:

Technical note.

Corporate Author:

BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

Personal Author(s):

Report Date:

1961-05-01

Pagination or Media Count:

13.0

Abstract:

IN THE STUDY OF DETONATION PHENOMENA AND OTHER RAPID EVENTS, SPECIAL HIGH SPEED CAMERAS ARE NECESSARY TO PHOTOGRAPH PROCESSES THAT OCCUR IN TIMES OF THE ORDER OF MICROSECONDS. Running at high speed, a framing camera photographs a series of 25 consecutive pictures at an exposure time of 0.2 microsec. per frame and a frame interval of 0.8 microsec. The 25 exposures are thus completed in 20 microseconds. The frame size and position of each exposure on the 40-in. strip of 35mm film are such that the film is not suitable for projection in any standard equipment. A system is described for animating a series of high speed frames, and projecting the result as a motion picture with a time magnification of about 200,000 thereby allowing a viewer to grasp more readily time and space relationships of the high speed event under study. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE