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.
All Wikipedia text
is available under the
terms of the GNU Free Documentation License
Search Encyclopedia
Search over one million articles, find something about almost anything!
... with absolute governmental power, from the Greek language turannos. In Classical Antiquity[?] it did not always have inherently negative implications, it merely ...