Curvature and Torsion, B.Sc, M.Sc Lecture by Megha Sharma.

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CURVATURE-The curvature vector at a point P of a given curve is the arc rate of rotation of tangent i.e. change in the direction of tangent as the point P moves along the curve and is equal to dt^/ds.the magnitude of curvature vector is called curvature of curve.
TORSION- The Torsion vector at a point P of a curve is the arc rate of change of binomial as the point P moves along the curve and is equal to db^/ds.The magnitude of the torsion vector is called torsion of the curve.

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