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5:13pm on Sunday, 23rd November, 2008:

Mathematics in Action


Driving back from yet another trip to visit my mother-in-law (I didn't even go in to see her, I slept in the car instead), I spotted an odd cloud formation. There were two vertical bars, plus a horizontal bar about the same length and thickness across the top. The result looked like the Greek letter pi.

So, pi in the sky..!

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Copyright © 2008 Richard Bartle (richard@mud.co.uk).