[NatureNS] eclipse! 10:00

Date: Fri, 22 Feb 2008 16:45:08 -0400
From: David & Alison Webster <dwebster@glinx.com>
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Hi Sherman & All,
    Is this perhaps because the iris adjusts somewhat to average light 
intensity and is consequently dangerously open with respect the bright 
arc of the nearly covered sun ?
Yt, DW

Sherman Williams wrote:

>
> THE BIG DANGER is just before and just after totality, when the Sun 
> not fully covered by the Moon.   In those moments sunlight coming from 
> the uncovered edges appears to be dim enough that it would not seem to 
> be harmful, however, in a few moments of direct gazing at any 
> uncovered portion of sun can deliver enough INFARED TO DO DAMAGE to 
> the retina.  The MOST DANGEROUS TIME to gaze at the Sun  would be any 
> normal sunny day, especially at noon when we are receiving its most 
> potent rays (radiation).
>
>
> Sherman
>
>
>
> Sherman Williams
>
> shermw@xcountry.tv <mailto:shermw@xcountry.tv>
>
>


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