Accession Number : AD0278062

Title :   A NEW METHOD FOR HIGH-SPEED MOTION-PICTURE PHOTOGRAPHY OF TRANSPARENT DROPS

Corporate Author : CHEMICAL RESEARCH AND DEVELOPMENT LABS EDGEWOOD ARSENAL MD

Personal Author(s) : PFEIFFER,ALBERT

Report Date : NOV 1961

Pagination or Media Count : 1

Abstract : A new method is described which is applicable to high-speed motion-picture photography of moving transparent drops. Previous methods have not considered the optical properties of drops as image forming, spherical convex lenses. By taking advantage of this property of transparent drops, it has been possible to produce sufficient light contrast between the drop and its background to enable photography of drops illuminated by diffused reflected light. It is concluded that high-speed motion-picture photography of transparent drops can be accomplished where it is possible to produce sufficient light contrast between the drop and its background so as to make the drop visible. Two highly satisfactory methods of producing this contrast were tested experimentally and found to produce an excellent technique which could be used for a variety of investigations in the aerosol field. Author)

Descriptors :   AEROSOLS, BRIGHTNESS, GLASS, ILLUMINATION, OPTICAL EQUIPMENT, OPTICAL IMAGES, SPHERES, TEST METHODS, VISIBILITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE