It’s insignificant.
From: Mike Shaw [mailto:[email protected]] Sent: Wednesday, August 03, 2011 8:29 AM To: [email protected]; 'John Carmichael'; [email protected] Subject: Re: mock stained glass sundial If you are going to allow your shadow to pass through two panes of glass, will refraction start to become important? Mike Shaw 53º 22'N 03º02'W www.wiz.to/sundials
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