Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!husc6!rutgers!cbmvax!grr From: grr@cbmvax.UUCP (George Robbins) Newsgroups: comp.sys.amiga Subject: Re: Another A2000 Question (LP monitor smear?) Message-ID: <2538@cbmvax.UUCP> Date: Mon, 19-Oct-87 03:00:46 EDT Article-I.D.: cbmvax.2538 Posted: Mon Oct 19 03:00:46 1987 Date-Received: Tue, 20-Oct-87 01:36:59 EDT References: <1950@gryphon.CTS.COM> Reply-To: grr@cbmvax.UUCP (George Robbins) Organization: Commodore Technology, West Chester, PA Lines: 33 Keywords: LP, long-persistence, smearing? In article <1950@gryphon.CTS.COM> richard@gryphon.CTS.COM (Richard Sexton) writes: > In article <16335@amdahl.amdahl.com> Kim DeVaughn writes: > > > >Actually, the color does matter somewhat, as the eye's sensitivity to, and > >visually perceived persistence of different colors varies. As I recall, > >the sensitivity is greatest in the green, which also has the lowest visual > >persistence (I may have the color wrong). This can also vary from person > >to person. > > I'm certainly not an expert on this subject, but I just can't see how > 'eye persistence' has any bearing on the matter. Its the "now I'm > here", "now I'm not" attribute of an interlaced display that causes > the flicker, not the physiological response of the eye to color. > > >Adding a greenish cast > >causes noticable flicker much sooner than does adding red or blue. > > This makes sense. The Green phosphor has a shorter persistence than > either the Red or Blue. Sorry, typically green has the longest persistance of the color phosphor triads. I suspect that this is due to unpleasantly short peristance of the red and blue phosphers, rather than any intentional characteristic of the green phospher. If I remember correctly, high speed oscilloscopes use a blue phospher for photograpy, while radar screens and other long ultra-long persistance display use this ugly yellow-green stuff. -- George Robbins - now working for, uucp: {ihnp4|rutgers|allegra}!cbmvax!grr but no way officially representing arpa: out to lunch... Commodore, Engineering Department fone: 215-431-9255 (only by mo! unioun