🚀 go-pugleaf

In article <LEE.90Jul5152350@quincy.cs.umass.edu>,
lee@quincy.cs.umass.edu (Peter Lee) writes:
 
|> I think "crappy" is a definite overstatement -- in many ways I prefer
|> the DS3100 display, but they do have a lower refresh rate: 60 Hz, in fact --
|> the same as the rate at which neon lights flicker.  That means that if you
|> have neon lights on, you can get some serious interference between them and
|> the monitor that can potentially lead to headaches.  You might try using
|> incandescent lights (or no lights at all) as an experiment -- do your
|> headaches go away then?

Perhaps you mean fluorescent lights (not neon)?  The reason that many
(all, in the past) crts use 60Hz refresh rate is to CANCEL the effect of 
any interference caused by fluorescent lights.  If the refresh rate is
different than that of the lights, then you get beat frequencies of the
difference of the two rolling down your monitor.

The monitors that use 70Hz rates look better not because of (lack of)
interference with lights, but just because the image stays (persists) longer.

_____________________________________
Brian V. Smith    (bvsmith@lbl.gov)
Lawrence Berkeley Laboratory
I don't speak for LBL, these non-opinions are all mine.