Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!steinmetz!hamlet!hallett From: hallett@hamlet.steinmetz (Hallett) Newsgroups: comp.sys.mac Subject: Re: SE display bug survey results (medium long) Message-ID: <6829@steinmetz.steinmetz.UUCP> Date: Tue, 28-Jul-87 08:30:10 EDT Article-I.D.: steinmet.6829 Posted: Tue Jul 28 08:30:10 1987 Date-Received: Wed, 29-Jul-87 05:48:24 EDT References: <409@sdacs.ucsd.EDU> <1370@apple.UUCP> Sender: root@steinmetz.steinmetz.UUCP Reply-To: hallett@hamlet.UUCP (Hallett) Organization: General Electric CRD, Schenectady, NY Lines: 39 In article <1370@apple.UUCP> ems@apple.UUCP (Mike Smith) writes: >This is not meant as a joke, a casting of doubt, or in any way as a >cute or 'smart' remark. It is meant totally as a searching for truth. > >I have noticed a tendency for my Mac+ screen to wiggle after a while. >For me, at least, this is an optical illusion. I sat down and put >put the edge of a piece of paper next to the characters and suddenly >they didn't wiggle anymore ... > You know, there is another illusionary effect that may appear to make the screen wiggle. If you eat, grit your teeth or chew gum while you use your Mac, you will see the screen flicker. This is because, stupid as it sounds, your eye is fast enough to compensate for the screen redraw and avoids the flicker. Chewing motions throw off the eye synch and, wah la, redraw flicker appears. I first noticed this a couple of years ago. I went to get a couple of Dutch pretzels and as I was walking back to my Mac, chewing, I noticed the screen jumping all over the place (the effect increases with distance from the screen). Scared me crapless; "Oh no, not a new analog board!" However when I stopped chewing, it stopped. I didn't really know the cause until a MacWorld Magazine article late last year mentioned this phenomenon. Of course, your screen might be jumping, too. 8-) Jeffrey A. Hallett (hallett@ge-crd.arpa hallett@desdemona.uucp) Software Technology Program General Electric Corporate Research and Development ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ "The needs of the few outweigh the needs of the many" -- Kirk (STIII) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Disclaimer: My opinions do not represent my employer's, but it is his fault for giving me this thing. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~