Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: [Phys-l] expand your mind



Bagels start as a ball. It is then rolled into a cylinder, and that is formed into the torus. No hole is punched.

I saw it either on Mr. Roger's Neighborhood, or Sesame Street, but I can't give a more precise reference than that.


On Feb 23, 2006, at 2:24 PM, John Denker wrote:

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.
_______________________________________________
Forum for Physics Educators
Phys-l@carnot.physics.buffalo.edu
https://carnot.physics.buffalo.edu/mailman/listinfo/phys-l

Vern Lindberg
vern.lindberg@rit.edu
585-475-2546
http://www.rit.edu/~vwlsps/