# Torsion of the curve

1. Apr 15, 2014

### mech-eng

how can we understand torsion of curve is in the direction of normal unit vector en?

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Last edited: Apr 15, 2014
2. Apr 15, 2014

### UltrafastPED

3. Apr 15, 2014

### mech-eng

4. Apr 15, 2014

### UltrafastPED

It is a mathematical system which helps with space curves; it starts with the idea that the tangent to a curve can be found by taking the derivative of the curve's functional definition wrt the distance along the curve.

Then two more orthogonal vectors are created, providing a co-moving orthogonal reference system.

This is usually first encountered in a vector calculus course, though it is useful in many areas of engineering.