Accession Number : AD0655421

Title :   A REPETITIVE MECHANICAL PHOTOFLASH TIMER FOR THE MILLISECOND REGION,

Corporate Author : JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s) : Raezer,Spencer

Report Date : 20 DEC 1957

Pagination or Media Count : 8

Abstract : A mechanical timer has been developed which has a useful range from 0.10 to 100 milliseconds with an error of plus or minus 15.0 microseconds. It has been used successfully in connection with high-speed, multiple exposure photography in applications where electronic timers could not be employed. The device is constructed from standard, easily obtained parts. (Author)

Descriptors :   (*TIMING DEVICES, FLASH LAMPS), HIGH SPEED PHOTOGRAPHY, FIRING CIRCUITS, RELAYS, TIMING CIRCUITS

Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Test Facilities, Equipment and Methods
      Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE