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!
... is the abbreviation for Deutsche Bahn, the major German railway company
DB is the abbreviation of Dominion Breweries[?], a major beer brewing company of New ...