the plane of incidence
1plane of incidence — a plane containing an incident line (as a ray of light) and the normal to a surface (as of a mirror) at the point of incidence * * * Optics. a plane determined by a given ray, incident on a surface, and the normal at the point where the incident… …
2plane of incidence — Optics. a plane determined by a given ray, incident on a surface, and the normal at the point where the incident ray strikes the surface. [1825 35] * * * …
3Incidence (geometry) — In geometry, the relations of incidence are those such as lies on between points and lines (as in point P lies on line L ), and intersects (as in line L1 intersects line L2 , in three dimensional space). That is, they are the binary relations… …
4Incidence matrix — In mathematics, an incidence matrix is a matrix that shows the relationship between two classes of objects. If the first class is X and the second is Y, the matrix has one row for each element of X and one column for each element of Y. The entry… …
5Plane at infinity — In projective geometry, the plane at infinity is a projective plane which is added to the affine 3 space in order to give it closure of incidence properties. The result of the addition is the projective 3 space, P^3 . If the affine 3 space is… …
6plane — 1. A two dimensional flat surface. See planum. 2. An imaginary surface formed by extension of a point through any axis or two definite points, in reference especially to craniometry and to pelvimetry. SYN: planum. [L. planus, flat] Addison …
7Plane mirror — A plane mirror is a mirror with a planar reflective surface. For light rays striking a plane mirror, the angle of reflection equals the angle of incidence. Thus a collimated beam of light does not spread out after reflection from a plane mirror,… …
8The Night the Cylons Landed — Infobox Television episode | Title = The Night the Cylons Landed Series = Galactica 1980 Season = 1 Episode = 7 8 Airdate = April 13 and April 20 1980 Writer = Glen A. Larson Director = Sigmund Neufeld Jr. Part I, Barry Crane Part II Guests = Val …
9The Troubleshooters — For the NBC television series, see The Troubleshooters (1959 TV series). The Troubleshooters (titled Mogul for the first season) is a British television series made by the BBC between 1965 and 1972, created by John Elliot. During its run, the… …
10Incidence structure — In combinatorial mathematics, an incidence structure is a triple :C=(P,L,I)., where P is a set of points , L is a set of lines and I subseteq P imes L is the incidence relation. The elements of I are called flags. If :(p,ell) in I,we say that… …
