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The Magic Cafe Forum Index » » Tenyo of Japan » » Scientific paper on the Dental Dam Penetration (0 Likes) Printer Friendly Version

Bob_Hummer
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Here is a scientific paper (written by five theoretical physicists) explaining the science behind Lubor Fiedler's classic Dental Dam Penetration.

It hurts my head trying to understand all this. I am not even gonna bother.

But for you kids who are actually smart - you may enjoy it.

http://arxiv.org/ftp/arxiv/papers/1509/1509.06232.pdf

All the best,

Joe Mckay
Richard Kaufman
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That's pretty funny!
edshern
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I can't even get past the title; "The ‘coin-through-the-rubber’ trick: an elastically stabilized invagination"

'Invagination' is the infolding of one part within another part of a structure,[1] a folding that creates a pocket.

Guess I'm not as smart as I thought.

Lest you think you're smarter, this quote is from page 4 of 20;
Modeling the invagination
A wide variety of continuum models exist to describe rubber elasticity, where the strain energy density depends on
invariants of the left Cauchy-Green stretch tensor [13]. One example is the general hyperelastic model proposed by
Rivlin, where, for incompressible materials, the energy density has the form [14]
2 2 2 2 2 2 2 2 2
1 2 3 1 2 1 3 2 3
, 0
( 3) ( 3) , p q
R pq
p q
W C         


       
Sorry, the mathematical formula won't translate.
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