The one time I made a bagel, I rolled the dough into a cylinder and then
connected the ends to form a torus, which I then cooked by submerging it
into boiling water for several minutes. I don't know if this is how
most bagels are made.
Daniel Crowe
Oklahoma School of Science and Mathematics
Ardmore Regional Center
dcrowe@sotc.org
-----Original Message-----
From: phys-l-bounces@carnot.physics.buffalo.edu
[mailto:phys-l-bounces@carnot.physics.buffalo.edu] On Behalf Of John
Denker
Sent: Thursday, February 23, 2006 1:25 PM
To: Forum for Physics Educators
Subject: Re: [Phys-l] expand your mind
Here's an even simpler hypothesis: Some sort of memory effect
is involved.
Think about how the thing was made: It started out as a ball,
then a hole was poked in the middle. Poking adds material to
the inside of the torus, and puts the outside under tension.
The inside is either under compression or under much less
tension than the outside.
To test this hypothesis, construct the bagel using some other
technique, perhaps by assembling small bits, or perhaps by
cutting with a donut cutter.