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Capital Adventures
July 25th, 2008
09:11 pm
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low pressure

Low pressure sodium vapour lamp.  Yellow!

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(2 comments | Leave a comment)

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Date:July 25th, 2008 12:21 pm (UTC)
Very. That double D line is a pretty good approximation of monochromatic.
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Date:July 25th, 2008 12:26 pm (UTC)
Heh. Easy to filter.
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