@periodicvideos AWESOME: mercury and relativity (s): http://www.periodicvideos.com/videos/feature_mercury_relativity.htm … and mercury and relativity (gen): http://www.youtube.com/watch?v=rZU8Y9DIBtI …
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@periodicvideos AWESOME: mercury and relativity (s): http://www.periodicvideos.com/videos/feature_mercury_relativity.htm … and mercury and relativity (gen): http://www.youtube.com/watch?v=rZU8Y9DIBtI …