polar coordinate
21Coordinate covalent bond — [ ammonium ion] A coordinate covalent bond (formerly also known as dative bond [GoldBookRef | file = D01523 | title = dative bond] ) is a description of covalent bonding between two atoms in which both electrons shared in the bond come from the… …
22polar axis — noun 1. : the axis of rotation of an equatorial mounting that is set parallel to the earth s axis permitting a telescope to be turned in hour angle or right ascension 2. : the reference line in polar coordinates from which the angle coordinate is …
23Cylindrical coordinate system — A cylindrical coordinate system with origin O, polar axis A, and longitudinal axis L. The dot is the point with radial distance ρ = 4, angular coordinate φ = 130°, and height z = 4. A cylindrical coordinate system is …
24Spherical coordinate system — In mathematics, the spherical coordinate system is a coordinate system for representing geometric figures in three dimensions using three coordinates: the radial distance of a point from a fixed origin, the zenith angle from the positive z axis… …
25Cartesian coordinate system — Illustration of a Cartesian coordinate plane. Four points are marked and labeled with their coordinates: (2, 3) in green, (−3, 1) in red, (−1.5, −2.5) in blue, and the origin (0, 0) in purple. A Cartesian coordinate system specifies each point… …
26spherical coordinate — noun : any of three coordinates in space two being obtained by constructing in a plane a polar coordinate system and the third being the angle between this plane and a fixed plane containing the polar axis …
27cylindrical coordinate — noun Date: circa 1934 any of the coordinates in space obtained by constructing in a plane a polar coordinate system and on a line perpendicular to the plane a linear coordinate system …
28cylindrical coordinate — noun mathematics : any of the coordinates in space obtained by constructing in a plane a polar coordinate system and on a line perpendicular to the plane at the pole a linear coordinate system …
29Geographic coordinate system — Map of Earth showing lines of latitude (horizontally) and longitude (vertically), Eckert VI projection; large version (pdf, 3.12MB) …
30List of coordinate charts — This article attempts to conveniently list articles on some of the most useful coordinate charts in some of the most useful examples of Riemannian manifolds.The notion of a coordinate chart is fundamental to various notions of a manifold which… …
