Friday, 29 November 2013
Wednesday, 13 November 2013
What pi sounds like
http://www.youtube.com/v/YOQb_mtkEEE?autohide=1&version=3&autohide=1&feature=share&attribution_tag=9MIycxOJsPbSrZWTXiWjRA&showinfo=1&autoplay=1
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