For periodic table enthusiasts like us, this clock is pretty amazing!
A video on every element: http://bit.ly/118elements
Watches on Numberphile: http://youtu.be/kOClr_bew38
Here are some periodic table clocks, but alas not the main one in this video...
US: http://amzn.to/W35Fbe
UK: http://amzn.to/1q3jbc0
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From the School of Chemistry at The University of Nottingham: http://bit.ly/NottChem
Periodic Videos films are by video journalist Brady Haran: http://www.bradyharan.com/
A run-down of Brady's channels: http://bit.ly/bradychannels
