Path: utzoo!utgpu!watmath!att!rutgers!texbell!wuarchive!gem.mps.ohio-state.edu!uakari.primate.wisc.edu!ames!amelia!eos!jbm
From: jbm@eos.UUCP (Jeffrey Mulligan)
Newsgroups: comp.graphics
Subject: Re: Workstations that can record/play realtime video
Message-ID: <5588@eos.UUCP>
Date: 16 Nov 89 23:05:08 GMT
References: <6509@portia.Stanford.EDU> <1360003@hpspcoi.HP.COM> <7645@ttidca.TTI.COM> <32598@ucbvax.BERKELEY.EDU>
Organization: NASA Ames Research Center, California
Lines: 22

djones@awesome.berkeley.edu (David G. Jones) writes:

>There are *no* rods in the center of your fovea, besides rods are mostly
>saturated in bright, daytime settings.  The cones in your fovea are about
>1 second of visual angle apart, which is very well matched to your
>resolution acuity of 60 cycles per degree - not what I'd call widely spaced.

60 seconds / minute
60 minutes /degree

A spacing of 1 second would yield a resolution of 1800 cycles/degree.
The smallest spacing is about 30 seconds or arc (or half a minute),
and is consistent with 60 cycles/degree.

>the vision police.
must be on the take

-- 

	Jeff Mulligan (jbm@aurora.arc.nasa.gov)
	NASA/Ames Research Ctr., Mail Stop 239-3, Moffet Field CA, 94035
	(415) 694-3745