[visionlist] Roman acuity test?

Jonathan D. Victor jdvicto at med.cornell.edu
Sat Aug 4 20:47:57 GMT 2007


"legend also has it" that the Greeks required that rulers stepped down once they could no longer see 7 stars in the Pleiades -- 

See also

http://www.sandovalsignpost.com/jan03/html/dark_skies.html

Jonathan D. Victor 
jdvicto at med.cornell.edu
lab home page: http://www-users.med.cornell.edu/~jdvicto/labonweb.html
personal home page: http://www-users.med.cornell.edu/~jdvicto/jdvonweb.html



----- Original Message -----
From: "Dr. Jeffrey Anshel" <eyedoc at adnc.com>
Date: Saturday, August 4, 2007 3:59 pm
Subject: Re: [visionlist] Roman acuity test?

> Denis,
> 
> You could always just start with: "Legend has it that...."; that 
> would likely get you off the hook for any deficiency in accuracy.
> 
> Jeff
> 
> At 09:35 AM 8/4/2007, Denis Pelli wrote:
> 
> >Reading various posting found through Google, I think the 
> following is
> >true:
> >
> >"The Roman legions required each candidate for Centurion Guard to
> >resolve a pair of stars, Alcor and Mizar in Ursa Major, 12 min arc
> >apart."
> >
> >However, I would like to publish this in an article. Can anyone 
> specify>a reference that I can cite for this fact?
> >
> >Denis Pelli
> >Professor of Psychology and Neural Science
> >New York University
> >http://psych.nyu.edu/pelli/
> >
> >p.s.
> >Were Centurion Guards lookouts?
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> >
> >
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> >
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> Jeffrey Anshel, OD
> Corporate Vision Consulting
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