We write "Merry Christmas" on a tiny fragment of snow. More physics at http://www.sixtysymbols.com/
See an image at http://www.flickr.com/photos/sixtysymbols/5231885392/
With Philip Moriarty
Published 2010-12-04 · Watch on YouTube ↗ Availability and playback restrictions are controlled by the original channel.
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