The field frequency of a computer monitor or TV
screen is a compromise between the requirement
for as many horizontal lines as possible
and the avoidance of flicker. Such brightness,
luminance or colour fluctuations if fewer than
25–30 per second may cause eye strain and
headache. It is often possible to increase the field
frequency and so prevent such discomforts. The
meter described in this article enables the field
frequency to be determined.
Downloading of this magazine article is reserved for registered users only.
Discussion (0 comments)