Portal de Periódicos da CAPES

Critical Fusion Frequency as a Function of Exposure Time*

1966; Optica Publishing Group; Volume: 56; Issue: 11 Linguagem: Inglês

10.1364/josa.56.001607

2375-1037

Duane A. Anderson, J. W. Huntington, Ernst Simonson,

Fluid Dynamics and Turbulent Flows

The effect of exposure time from 0.1 to 1.1 sec on the critical flicker frequency (CFF) was studied. For all five subjects the CFF drops with shortening of the exposure time below 0.5 to 0.7 sec, gradually to 0.2 sec and steeply below 0.2 sec. The steepness of slope varied with the light–dark ratio (LDR) in the following order from most to least pronounced: LDR = 1:9, 5:5, 9:1. The data were plotted in terms of "critical number of flashes," i.e., the number of light flashes at fusion multiplied by exposure time in milliseconds, versus exposure time. There was a linear relationship between 0.2 to 0.9 sec.