Talk:Spherical sector: Difference between revisions
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==Phi or Theta?== |
==Phi or Theta?== |
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According to |
According to [[Coordinate_system]] in euclidean space, the angle from the pole should be noted as theta. The azimuth angle phi. If not referring to euclidean co-ordinates, the first angle referred to is conventionally theta. Perhaps theta should replace phi in the formula.[[User:Nick Hill|Nick Hill]] ([[User talk:Nick Hill|talk]]) 19:45, 18 September 2015 (UTC) |
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Revision as of 19:45, 18 September 2015
Introduction : "In geometry, a spherical sector is a portion of a sphere enclosed by two radii from the center of the sphere."
That is nonsense. A radius is a line, and two lines cannot bound a 3D surface. Perhaps : "In geometry, a spherical sector is a portion of a sphere enclosed by a circular cone with apex at the centre of the sphere.". Disambiguation also needs attention.
94.30.84.71 (talk) 15:26, 5 March 2011 (UTC)
Phi or Theta?
According to Coordinate_system in euclidean space, the angle from the pole should be noted as theta. The azimuth angle phi. If not referring to euclidean co-ordinates, the first angle referred to is conventionally theta. Perhaps theta should replace phi in the formula.Nick Hill (talk) 19:45, 18 September 2015 (UTC)