9th International Congress on High-Speed Photography
Journal of the SMPTE · 1970
3 and 4, for these special film presentations.with discussions to be conducted in English (other sessions having simultaneous translations for French, German and Russian).These film presentations will be up to thirty minutes in length, with the preprints and Congress Proceedings coverage of these somewhat shorter than for other papers.A short description of some of these presentations follows:In "High-speed Photography of Particle Motion in a Disc Refiner," by D. Atack land W. D. May, Pulp and Paper Kesearch Institute of Canada, Montreal, to determine the efficiency of an experimental plate pattern, it was desirable to determine the overall pattern of flow of the material (wood chips) through a disc refiner over periods of several seconds (to make pulp), and to determine the alignment and movement of individual particles compnising the flow.This was achieved partially through the use of high-speed flashsynchronized photography, recording the movement of particles over short time intervals at a rate of 8000 frames/& "The Rotor Burst Protection Program" by G. *J.