non-coplanar
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Projective geometry — is a non metrical form of geometry, notable for its principle of duality. Projective geometry grew out of the principles of perspective art established during the Renaissance period, and was first systematically developed by Desargues in the 17th … Wikipedia
Polychlorinated biphenyl — PCBs redirects here. For printed circuit boards, see printed circuit board. Labelling transformers containing PCBs … Wikipedia
Plücker coordinates — In geometry, Plücker coordinates, introduced by Julius Plücker in the 19th century, are a way to assign six homogenous coordinates to each line in projective 3 space, P 3. Because they satisfy a quadratic constraint, they establish a one to one… … Wikipedia
Polybrominated biphenyl — Structure of polybrominated biphenyls Polybrominated biphenyls (PBBs), also called brominated biphenyls or polybromobiphenyls, are a group of manufactured chemicals, of the polyhalogenated compounds. Their chlorine analogs are the PCBs. While… … Wikipedia
AC power plugs and sockets — See also: Industrial and multiphase power plugs and sockets Plugs and sockets may sometimes combine male and female contacts, but t … Wikipedia
Curvilinear coordinates — Curvilinear, affine, and Cartesian coordinates in two dimensional space Curvilinear coordinates are a coordinate system for Euclidean space in which the coordinate lines may be curved. These coordinates may be derived from a set of Cartesian… … Wikipedia
Dyadics — are mathematical objects, representing linear functions of vectors. Dyadic notation was first established by Gibbs in 1884. Contents 1 Definition 2 Dyadics algebra 2.1 Dyadic with vector 2.2 … Wikipedia
Ordered geometry — is a form of geometry featuring the concept of intermediacy (or betweenness ) but, like projective geometry, omitting the basic notion of measurement. Ordered geometry is a fundamental geometry forming a common framework for affine, Euclidean,… … Wikipedia
FreeTrack — Infobox Software name = caption = latest release version = v2.2 latest release date = October 7, 2008 operating system = Microsoft Windows genre = Optical motion tracking license = GNU General Public License website = [http://www.free track.net/… … Wikipedia
Crystal system — Diamond crystal structure consists of face centered cubic lattice. In crystallography, the terms crystal system, crystal family, and lattice system each refer to one of several classes of space groups, lattices, point groups, or crystals.… … Wikipedia
Planar chirality — is the special case of chirality for two dimensions.This term is most frequently used in chemistry contexts, e.g., for a chiral molecule lacking an asymmetric carbon atom, but possessing two non coplanar rings that are each dissymmetric and which … Wikipedia
