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Vector

In physics, vector calculus and some algebras, vector is a quantity characterized by magnitude and direction. Usually denoted or thought of as an arrow drawn from an initial point toward an end point. The arrow designates the vector quantity. Quantities such as velocity, acceleration, momentum, electric field, torque and angular momentum are examples of vectors. When particle physicists indicate the vector of a certain particle, it can refer to direction of spin or other quantities of the point particle itself.

Vectors may be plotted in as many dimensions as apply to the equations - four-vectors play a central role in relativity theory, for instance. Vectors that vary from point to point are vector fields. Vectors may also be viewed as a type of tensor. Transformations (rotations about an axis) of a vector field correspondingly rotate the scalar field.

Web Resources On Vector

http://en.wikipedia.org/wiki/Vector_(spatial)
http://www.answers.com/topic/vector

Book Resources On Vector

Vector Calculus by Jerrold E. Marsden and Anthony Tromba
Schaum's Outline of Vector Analysis by Murray R. Spiegel
The Symmetry Perspective: From Equilibrium to Chaos in Phase Space and Physical Science by Martin Golubitsky and Ian Stewart

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