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Subject:Re: Computer Flickering From:Herman Holtz <holtz -at- CLARK -dot- NET> Date:Thu, 16 Mar 1995 07:47:41 -0500
On Wed, 15 Mar 1995, Sevigny, Josee wrote:
> > > The required "refresh rate" for monitors depends on something called
> > > "flicker fusion frequency", the minimum rate of flicker at which you
> > > are no longer able to detect gaps between periods of light and
> > > periods of dark (the flicker).
> >
> > Is this why computer screens always "flicker" on TV?
> I was always told that was related to the cycles per second or Hertz value.
It is related to the persistence of human vision, which is one 16th of a
second and is what makes movies possible so that the human eye perceives
a series of still pictures as motion. I don't know a great deal about
computer monitors--they are somewhat different than TV picture tubes--but
te latter are interlaced, sweeping the face of the tube at 15,750 hz or
scanning at 15,750 times each second to scan the full screen 60 times
each second.
* * *
Herman Holtz [holtz -at- clark -dot- net]: Marketing Consultant/Proposal Specialist,
Writing & Ghost Writing Services, 35 years experience. Author of 60+
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