Re: Pinhole Digest #291 - 11/17/99

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From: c. wings (cwings@sonic.net)
Date: Wed Nov 17 1999 - 06:50:28 PST 

Message-Id: <l03130300b45870e63009@[209.204.150.138]>
Date: Wed, 17 Nov 1999 06:50:28 -0800
From: "c. wings" <cwings@sonic.net>
Subject: Re: Pinhole Digest #291 - 11/17/99

A student of mine wonders what exactly burns your retina if you look at the
sun through binoculars (or stare at it with the naked eye)--is it heat? is
it light? uv? how does it work? --clem wings

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