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From: flocchini@ucdavis.UUCP (flocchini)
Newsgroups: net.micro.amiga
Subject: Re: Making Interlace usable (wrt: flicker)
Message-ID: <328@ucdavis.UUCP>
Date: Wed, 14-May-86 12:40:54 EDT
Article-I.D.: ucdavis.328
Posted: Wed May 14 12:40:54 1986
Date-Received: Sat, 17-May-86 01:39:05 EDT
References: <234@cositex.UUCP>
Distribution: net
Organization: University of California, Davis
Lines: 55

> Boy... have I got one for y'all.
> 
> The other day I was playing with my Amiga while using the workbench
> etc. in Interlace and (once again) playing with the monitor knobs to
> reduce the flicker.  For some reason, I squinted while looking at a
> flickering screen, and noticd the flicker appeared to go away!  Taking
> a guess, I put on my (cheap polarized Foster Grant (TM?)) sunglasses
> and the flicker went away!  Now, I did feel a little strange staring at
> the monitor, inside my house with my ``shades'' on, but hey... my eyes
> liked it!
> 
> Getting serious for a moment, I understand the when squinting you
> partially polarize light, and of course the same happened with my
> sunglasses.  Is it possible that polarization somehow reduces the
> apparent flicker?  Have I just given away a simple product idea to an
> adventerous type (or two)?  Presumably, (if anything I've been saying
> is true) you could have a piece of polarized film (or other polarized
> transparent material) and place this over the monitor.  How this would
> affect the overall display quality is another ballgame altogether.
> 
> Not having done extensive test, I am just assuming that it is polariztion
> that causes this, though it may not be as simple as that.  Either way,
> if you want to use interlace w/out flicker, and don't mind wearing
> sunglasses indoors, rush out to your local store and get a pair.
> 
> 	Steve
> 
> P.S. If someone does comeout w/an attachment for the monitors, I'd love
> to hear about it. Since I'm all software, I'd never get around to doing
> it anyway!
> -- 
> Steve Sanderson, COSI Texas
> 		 4412 Spicewood Springs, Suite 801 Austin, Texas 78759
> UUCP:	{ihnp4, seismo, ctvax}!ut-sally!cositex!san, san@cositex.UUCP
> AT&T:	(512) 345-2780

*** REPLACE THIS LINE WITH YOUR MESSAGE ***
i tried the above with my trusty ski optics and the jayminerslides
on fish disk #19. the flicker is all but gone.
i dont think it is just reduction of intensity.i have lowered the
brightness level without this kind of sucess.
there is a product that may help. i have seen ads for "Polaroid
CRT Aids". this a two layer system with a linear polarizer and a
quater wave plate. if i can get a hold of one of these i'll put
my impressions on the net.
i will admit i was surprised at the results.with the sunglasses all
thoughts of a long persistence monitor have dissappeared.

bob flocchini
lawr
university of california
davis,ca 95616
ucdavis!deneb!flocchini
.
:wq