It's not the answer you want but maybe the answer you need; see: http://michaelbach.de/ot/cog_impossWFallMcwolles/index.html
The solution is probably comparable to that for the Penrose triangle/stairway see: http://www.coolopticalillusions.com/build-an-impossible-triangle.htm -Mike Palij New York University [email protected] -------------------- Original Message ------------------------------- On Sat, 19 Feb 2011 19:04:31 -0800, Stephen Black wrote: Catherine Wehlburg posted a link to a demonstration (if that's the word) of Escher's impossible water wheel drawing at http://www.youtube.com/watch?v=0v2xnl6LwJE (actually, the video plays better at gizmodo, here: http://www.gizmodo.jp/2011/02/post_8534.html ) It's really quite stunning. In the only TIPS reply I've seen to this fascinating video, Barbara Brown pointed us to a drawing which may provide a basis for understanding how it was done ( at http://imgur.com/EMUJL ). OK, I get a faint glimmer of what might be involved from Barbara's link, but no more than that. How the (supply your own expletive) does he get the water to appear to run uphill????? And it's a perpetual motion machine to boot! The commenters at YouTube are also clueless. Two suggest that a "ferroliquid" and magnetism are involved, which sounds dodgy to me. Only one gives a lengthy explanation which could possibly be true, except that I can't understand it. Is there no one on TIPS who knows what's going on? Please? Or do I have to start believing in a new inexhaustible form of energy? --- You are currently subscribed to tips as: [email protected]. To unsubscribe click here: http://fsulist.frostburg.edu/u?id=13090.68da6e6e5325aa33287ff385b70df5d5&n=T&l=tips&o=8852 or send a blank email to leave-8852-13090.68da6e6e5325aa33287ff385b70df...@fsulist.frostburg.edu
