A PROJECTION TIMER FOR VISUAL RESEARCH.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 10, 1946
- Accession Number
- AD0639370
Entities
People
- C. E. Woollen
- F. Hamburger Jr
Organizations
- Johns Hopkins University