spheroidal coordinates - definição. O que é spheroidal coordinates. Significado, conceito
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O que (quem) é spheroidal coordinates - definição

SYSTEM FOR DETERMINING THE POSITION OF A POINT
Coordinates; Coordinate; Coordinate transformation; Co-ordinate system; Coordinates (mathematics); Origin of coordinates; Coordinate plane; Coordinate systems; Coordinate axis; Coördinate; Coördinate system; Coordinates (elementary mathematics); Co-ordinate; Spheroidal coordinates; Coordinate surface; Coordinate line; Co-ordinates; Coordinate lines; Coordinate hypersurface; Coordinate surfaces; System of coordinates; Coord; Coördinates (mathematics); Cooerdinate; Coordinate transformations; Cartesian/Polar; Coordiante; Spatial coordinates; Coordinate frame; Negative distance; Coordinate curve; Coordinate curves; Coordinate planes; Image coordinate; N-dimensional coordinate system; Spatial coordinate; Plane coordinate system
  • The [[spherical coordinate system]] is commonly used in ''physics''. It assigns three numbers (known as coordinates) to every point in Euclidean space: radial distance ''r'', polar angle ''θ'' ([[theta]]), and azimuthal angle ''φ'' ([[phi]]). The symbol ''ρ'' ([[rho]]) is often used instead of ''r''.
  • The [[Cartesian coordinate system]] in the plane.
  • Cylindrical coordinate system
  • The number line
  • Coordinate surfaces of the three-dimensional paraboloidal coordinates.
  • 250px

Oblate spheroidal coordinates         
  • Figure 2: Plot of the oblate spheroidal coordinates μ and ν in the ''x''-''z'' plane, where φ is zero and ''a'' equals one. The curves of constant ''μ'' form red ellipses, whereas those of constant ''ν'' form cyan half-hyperbolae in this plane. The ''z''-axis runs vertically and separates the foci; the coordinates ''z'' and ν always have the same sign. The surfaces of constant μ and ν in three dimensions are obtained by rotation about the ''z''-axis, and are the red and blue surfaces, respectively, in Figure 1.
  • Figure 3: Coordinate isosurfaces for a point P (shown as a black sphere) in the alternative oblate spheroidal coordinates (σ, τ, φ). As before, the oblate spheroid corresponding to σ is shown in red, and φ measures the azimuthal angle between the green and yellow half-planes. However, the surface of constant τ is a full one-sheet hyperboloid, shown in blue. This produces a two-fold degeneracy, shown by the two black spheres located at (''x'', ''y'', ±''z'').
THREE-DIMENSIONAL ORTHOGONAL COORDINATE SYSTEM
Oblate spheroidal harmonics; Oblate spheroidal coordinate system
Oblate spheroidal coordinates are a three-dimensional orthogonal coordinate system that results from rotating the two-dimensional elliptic coordinate system about the non-focal axis of the ellipse, i.e.
Homogeneous coordinates         
MATHEMATICS
Homogenous coordinates; Homogeneous coordinate; Homogeneous co-ordinates; Homogeneous coordinate system; Projective coordinates; Homogeneous Coordinates; Homogenous coordinate
In mathematics, homogeneous coordinates or projective coordinates, introduced by August Ferdinand Möbius in his 1827 work ,August Ferdinand Möbius: Der barycentrische Calcul, Verlag von Johann Ambrosius Barth, Leipzig, 1827.
Lemaître coordinates         
PARTICULAR SET OF COORDINATES FOR THE SCHWARZSCHILD METRIC
Lemaitre coordinates; Lemaitre metric; Lemaître Coordinates; Lemaître metric
Lemaître coordinates are a particular set of coordinates for the Schwarzschild metric—a spherically symmetric solution to the Einstein field equations in vacuum—introduced by Georges Lemaître in 1932. English translation: See also:  … Changing from Schwarzschild to Lemaître coordinates removes the coordinate singularity at the Schwarzschild radius.

Wikipédia

Coordinate system

In geometry, a coordinate system is a system that uses one or more numbers, or coordinates, to uniquely determine the position of the points or other geometric elements on a manifold such as Euclidean space. The order of the coordinates is significant, and they are sometimes identified by their position in an ordered tuple and sometimes by a letter, as in "the x-coordinate". The coordinates are taken to be real numbers in elementary mathematics, but may be complex numbers or elements of a more abstract system such as a commutative ring. The use of a coordinate system allows problems in geometry to be translated into problems about numbers and vice versa; this is the basis of analytic geometry.