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Torsion
Torsion
measures how sharply a
curve
is twisting. It is analagous to
curvature
. If given a
vector
-valued
function
r(t), the torsion at a given value of t is
((r' × r")· r
(3)
) ||r' × r"||
-2
.
wikipedia.org
dumped 2003-03-17 with
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