Energy condensation: informative links
This page lists external links that show various energy condensation phenomena.
I plan to expand it as the lectures proceed.
--T. Witten , september 28, 1999
T. Witten's web page in Chicago.
Crumpling
Images and movies of crumpled sheets
Publications of Chicago group
Links to collaborators' and others' work
Alex Lobkovsky's thesis
in gzipped postscript
Granular force chains
Glasperlenspiel
our page on granular packing at the University of Chicago
with a movie from our simulation and a java experiment on frictionless
packing
Jean-Bernard Métais:
creator of sandpile sculpture in Jardin des Plantes
I should have included the picture that gave an overview of the whole
thing. It's a two storey structure. Initially the sand is piled on
the upper floor. The upstairs ceiling is mirrored so you can see
the depressions that form as the sand drains. there are lots of plugged
1 cm holes in the floor on which the sand sits. The sculptor then
goes into the ground floor room and takes out the center plug. Sand
starts flowing. That was the initial stage. The sand flowed
out for a couple of months, according to someone I met there one day.
Later he opened up a circle of dozens of holes around the perimeter of
the upper floor. This formed the circle of small piles. Finally in
early September he opened up a hole halfway between the center and the
periphery. The center hole had long since stopped flowing.
This formed the second big pile that you see. The pictures were taken
about September 25, 1999. ---T. Witten
Dan Howell's movies
of granular force chains
Broken gauge-symmetry media
