On Dec 30, 2008, at 5:11 PM, Jerry Leichter wrote:
This is a highly chaotic process, and after a short time, you see a completely random-looking dispersion of dye through the liquid. Present this to someone and any likely test will say this is quite random. But ... if you slow turn the inner cylinder backwards - "slowly", for both directions of turn, depending on details of the system - the original line of dye miraculously reappears.
(Laminar flow: <http://www.youtube.com/watch?v=p08_KlTKP50>.) -- Ivan Krstić <[email protected]> | http://radian.org --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [email protected]
