Xref: utzoo misc.consumers:4782 sci.electronics:2903
Path: utzoo!mnetor!uunet!iscuva!jimc
From: jimc@iscuva.ISCS.COM (Jim Cathey)
Newsgroups: misc.consumers,sci.electronics
Subject: Re: fluorescent lights and my brain
Message-ID: <1443@iscuva.ISCS.COM>
Date: 3 May 88 17:01:47 GMT
References: <530@scourge> <1182@ssc.UUCP> <1532@dataio.Data-IO.COM> <1143@neoucom.UUCP> <2427@ttidca.TTI.COM> <4608@ihlpf.ATT.COM>
Organization: ISC Systems Corporation, Spokane, WA
Lines: 9
Keywords: eyes head ache electricity

In article <4608@ihlpf.ATT.COM> straka@ihlpf.UUCP (55223-Straka,R.J.) writes:
>It seems that the human eye keys on the most significant stimulation that it
>encounters (sort of like capture ratio, in FM radio terms).  For example,
>take a MacIntosh (black on white screen, of course (~66Hz refresh)), and put
>it far away from you in an environment rich in fluorescent lighting.  If you
>are more than ~10 feet from the Mac, the fluorescent lights seem to dominate
>your eyes, and you see some sort of odd flickering.

The 9" Macintosh screens are refreshed at 60.15 Hz.