Torsion
Torsion is a measure of 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' cross r)dot (r(3))/(norm(r' cross r)^2.
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Torsion is a measure of 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' cross r)dot (r(3))/(norm(r' cross r)^2.