vector direction
71Orientation (vector space) — See also: orientation (geometry) The left handed orientation is shown on the left, and the right handed on the right. In mathematics, orientation is a notion that in two dimensions allows one to say when a cycle goes around clockwise or… …
72Displacement (vector) — Displacement versus distance traveled along a path. A displacement is the shortest distance from the initial to the final position of a point P[1]. Thus, it is the length of an imaginary straight path, typically distinct from the path actually… …
73Mass vector — The mass vector is a vector quantity that describes the magnitude and direction in which the mass acts for any point mass in the known universe in its movement about the universe s central axis of rotation. The discovery of the mass vector is… …
74Poynting vector — ▪ physics a quantity describing the magnitude and direction of the flow of energy in electromagnetic waves. It is named after English physicist John Henry Poynting (Poynting, John Henry), who introduced it in 1884. The Poynting vector …
75Normed vector space — In mathematics, with 2 or 3 dimensional vectors with real valued entries, the idea of the length of a vector is intuitive and can easily be extended to any real vector space Rn. The following properties of vector length are crucial. 1. The zero… …
76Null vector — For other uses, see Null (disambiguation). In linear algebra, the null vector or zero vector or empty vector is the vector (0, 0, …, 0) in Euclidean space, all of whose components are zero. It is usually written with an arrow head above or below… …
77Poynting vector — noun The vector obtained in the direction of a right hand screw from the cross product (vector product) of the electric field vector rotated into the magnetic field vector of an electromagnetic wave. Note: The Poynting vector, with transmission… …
78n-vector — is a three parameter non singular horizontal position representation well suited for replacing latitude and longitude in mathematical calculations and computer algorithms. Geometrically, it is a unit vector that is normal to the reference… …
79Four-vector — In relativity, a four vector is a vector in a four dimensional real vector space, called Minkowski space. It differs from a vector in that it can be transformed by Lorentz transformations. The usage of the four vector name tacitly assumes that… …
80Killing vector field — In mathematics, a Killing vector field, named after Wilhelm Killing, is a vector field on a Riemannian manifold (or pseudo Riemannian manifold) that preserves the metric. Killing fields are the infinitesimal generators of isometries; that is,… …
