Accession Number : AD0639370
Title : A PROJECTION TIMER FOR VISUAL RESEARCH.
Descriptive Note : Memorandum rept.
Corporate Author : JOHNS HOPKINS UNIV BALTIMORE MD PSYCHOLOGICAL LAB
Personal Author(s) : Woollen ,C. E. ; Hamburger,F. , Jr
Report Date : 10 NOV 1946
Pagination or Media Count : 12
Abstract : A device is described for providing visual images for research dealing with visual display methods. The apparatus will produce images variable in diameter from three inches to five feet, with exposure times adjustable from 0.15 to 0.8 seconds with build-up and decay time not exceeding four milliseconds. (Author)
Descriptors : (*TIMING DEVICES, OPTICAL IMAGES), PHOTOGRAPHIC PROJECTORS, VISION, SCREENS(DISPLAYS), DISPLAY SYSTEMS
Subject Categories : Anatomy and Physiology
Test Facilities, Equipment and Methods
Distribution Statement : APPROVED FOR PUBLIC RELEASE