CFF

views updated May 17 2018

CFF Abbrev. for critical flicker frequency. The refresh frequency of a displayed image at which flicker is perceived by the operator. It depends upon the brightness of the display, the angle subtended at the eye, and on the persistence of the phosphor. This frequency varies between individuals, but for typical cathode-ray tubes flicker is generally accepted as being perceptible to less than 5% of users when the CFF exceeds 80 hertz.

A Dictionary of Computing JOHN DAINTITH

CFF

views updated May 29 2018

CFF Chemins de fer fédéraux Suisses (Swiss national railway)
• Computing critical flicker frequency
• Physics critical fusion frequency

The Oxford Dictionary of Abbreviations FRAN ALEXANDER , PETER BLAIR , JOHN DAINTITH , ALICE GRANDISON , VALERIE ILLINGWORTH , ELIZABETH MARTIN , ANNE STIBBS , JUDY PEARSALL , and SARA TULLOCH