direction perpendicular
1Perpendicular — Per pen*dic u*lar, n. 1. A line at right angles to the plane of the horizon; a vertical line or direction. [1913 Webster] 2. (Geom.) A line or plane falling at right angles on another line or surface, or making equal angles with it on each side.… …
2perpendicular — adj. & n. adj. 1 a at right angles to the plane of the horizon. b (usu. foll. by to) Geom. at right angles (to a given line, plane, or surface). 2 upright, vertical. 3 (of a slope etc.) very steep. 4 (Perpendicular) Archit. of the third stage of… …
3Relative direction — A right handed Cartesian coordinate system, illustrating the x (right left), y (forward backward) and z (up down) axes relative to a human being. The most common relative directions are left, right …
4Vertical direction — In astronomy, geography, geometry and related sciences and contexts, a direction passing by a given point is said to be vertical if it is locally aligned with the gradient of the gravity field, i.e., with the direction of the gravitational force… …
5solids, mechanics of — ▪ physics Introduction science concerned with the stressing (stress), deformation (deformation and flow), and failure of solid materials and structures. What, then, is a solid? Any material, fluid or solid, can support normal forces.… …
6Coriolis effect — For the psychophysical perception effect, see Coriolis effect (perception). Classical mechanics Newton s Second Law …
7Anatomical terms of location — Standard anatomical terms of location are employed in science which deal with the anatomy of animals to avoid ambiguities which might otherwise arise. They are not language specific, and thus require no translation. They are universal terms that… …
8Polarizer — For the photographic filter, see Polarizing filter (Photography). A polarizing filter cuts down the reflections (top) and made it possible to see the photographer through the glass at roughly Brewster s angle although reflections off the back… …
9Geometric algebra — In mathematical physics, a geometric algebra is a multilinear algebra described technically as a Clifford algebra over a real vector space equipped with a non degenerate quadratic form. Informally, a geometric algebra is a Clifford algebra that… …
10Cross product — This article is about the cross product of two vectors in three dimensional Euclidean space. For other uses, see Cross product (disambiguation). In mathematics, the cross product, vector product, or Gibbs vector product is a binary operation on… …
