			    Lorenz Attractor


In 1962 a meteorologist named Edward Lorenz came up with a set of
equations to predict the weather:

       x' = -x + y
       y' = Rx - y - xz           = 10,   B = 8/3,   R = 28
       z' = -Bz + xy

These plot a really neat--and now famous--graph.

These plot a nifty, and now famous, graph.

To see the graph in three dimensions, you must fuse the two images
together. This requires a little practice. Look straight on at a point
midway between the two images, then relax your vision to focus at
infinity. The two images will split, giving four. Let the two images in
the middle drift together until they lock. It's easier to do this in a
darkened room, and it helps to hit the spacebar occasionally to keep the
graph uncluttered.

Note that small differences in the starting position lead to greatly
different paths, but the paths are attracted to two points. Lorenz
wondered: "Can the flap of a butterfly's wing stir up a tornado in
Texas?"

-Loren Blaney
