[Sca-cooks] Drummond on Butter

S CLEMENGER sclemenger at msn.com
Thu Jun 26 06:43:00 PDT 2008

You can also get sunburned, quite efficiently, right through the glass 
windows of your car....

----- Original Message ----- 
From: "Doc" <edoard at medievalcookery.com>
To: "Cooks within the SCA" <sca-cooks at lists.ansteorra.org>
Sent: Thursday, June 26, 2008 7:09 AM
Subject: Re: [Sca-cooks] Drummond on Butter

> Actually that's only partly correct.  I know that UV light is a big 
> problem for art museums.  It damages paintings and such, even when they 
> are covered by glass.
> >From Wikipedia:
> Ordinary glass is partially transparent to UVA but is opaque to shorter 
> wavelengths while Silica or quartz glass, depending on quality, can be 
> transparent even to vacuum UV wavelengths. Ordinary window glass passes 
> about 90% of the light above 350 nm, but blocks over 90% of the light 
> below 300 nm.
> [ http://en.wikipedia.org/wiki/Ultraviolet ]
> - Doc 

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