The flaw which allowed the Allies to break the Nazi Enigma code.
First video explaining Enigma: http://youtu.be/G2_Q9FoD-oQ
Extra footage: http://youtu.be/BdrrJ7qd4HA
Brown papers on ebay: bit.ly/brownpapers
Periodic Videos: http://www.youtube.com/periodicvideos

This video features Dr James Grime discussing Enigma, the Bombe and Alan Turing.

James' "day job" is touring with the Enigma machine - he could even visit you - see more at http://enigma.maths.org/content/project-officer

The maths of breaking the Enigma by James Grime http://enigma.maths.org/content/sites/enigma.maths.org/files/maths.pdf

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