Friday, October 14, 2011

Spectroscopy

http://xkcd.com/964/

In case you don't get the reference in the first poster on the wall...
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1 comment:

  1. JohnOctober 15, 2011 at 12:05 AM

    http://bitcast-a.v1.dfw1.bitgravity.com/slashfilm/wp/wp-content/images/floyddarksidenomoon.jpg

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