### Versor

Versors are an algebraic parametrisation of rotations. In classical quaternion theory a versor is a quaternion of norm one (a unit quaternion). The corresponding 3-dimensional rotation has the angle {num|2}a about the axis r in axis–angle representation. The word is from Latin versus = `turned`, from pp. of vertere = `to turn`, and was intro...
Found on http://en.wikipedia.org/wiki/Versor

### Versor

• (n.) The turning factor of a quaternion.
Found on http://thinkexist.com/dictionary/meaning/versor/

### versor

<geometry> The turning factor of a quaternion. ... The change of one vector into another is considered in quaternions as made up of two operations; 1st, the rotation of the first vector so that it shall be parallel to the second; 2d, the change of length so that the first vector shall be equal to the second. That which expresses in amount and...
Found on http://www.encyclo.co.uk/local/20973

### Versor

[physics] In geometry and physics, the versor of an axis or of a vector is a unit vector indicating its direction. ...
Found on http://en.wikipedia.org/wiki/Versor_(physics)

### Versor

Ver'sor noun [ New Latin , from Latin vertere , versus , to turn. See Version .] (Geom.) The turning factor of a quaternion. » The change of one vector into another is considered in quaternions as made up of two operations; 1st, the rotation of the first vector so that...
Found on http://www.encyclo.co.uk/webster/V/18
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