Spherical coordinates, also called spherical polar coordinates (Walton 1967, Arfken 1985), are a system of curvilinear coordinates that are natural for...
mathworld.wolfram.com/SphericalCoordinates.html mathworld.wolfram.com/SphericalCoordinates.html
Encyclopedia: Spherical 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 origi...
en.wikipedia.org/wiki/Spherical_coordinate_system
In this module we look at situations in which the important things about a point are its distance from the origin and, using terms from geography, its latitude and longitude. In this situation we use spherical coordinates.
www.math.montana.edu/frankw/ccp/multiworld/multipleIVP/... www.math.montana.edu/frankw/ccp/multiworld/multipleIVP/spherical/body.htm
This is a list of some vector calculus formulae of general use in working with various curvalinear coordinate systems.
en.wikipedia.org/wiki/Del_in_cylindrical_and_spherical_... en.wikipedia.org/wiki/Del_in_cylindrical_and_spherical_coordinates
In this section we will introduce spherical coordinatesSpherical coordinates can take a little getting used to.  It’s probably easiest to start things off with a sketch.
tutorial.math.lamar.edu/Classes/CalcIII/SphericalCoords... tutorial.math.lamar.edu/Classes/CalcIII/SphericalCoords.aspx
Applications of Spherical Polar Coordinates Physical systems which have spherical symmetry are often most conveniently treated by using spherical polar coordinates. Cylindrical Polar Coordinates...
hyperphysics.phy-astr.gsu.edu/hbase/sphc.html
The unit vectors in the spherical coordinate system are functions of position. It is convenient to express them in terms of the spherical coordinates and the unit vectors of the rectangular coordinate system which are not themselves functions of position.
www.csupomona.edu/~ajm/materials/delsph.pdf
Nearly everybody uses r and to denote polar coordinates. Most American calculus texts also utilize in spherical coordinates for the angle in the equatorial plane (the azimuth or longitude), for the angle from the positive z-axis (the zenith or colatitude), and for the radial coordinate.
www.physics.oregonstate.edu/bridge/papers/spherical.pdf www.physics.oregonstate.edu/bridge/papers/spherical.pdf
Graphs functions of the form r=f(θ,φ) using spherical coordinates in three dimensions. How to use || Examples || Other Notes The text input fields for functions can accept a wide variety of expressionsto represent functions, and the buttons under the graphallow various manipulations of the graph coordinates.
cs.jsu.edu/mcis/faculty/leathrum/Mathlets/spherical.htm... cs.jsu.edu/mcis/faculty/leathrum/Mathlets/spherical.html
Interactive graphics illustrating spherical coordinates and some simple spherical coordinate surfaces. Spherical coordinates can take a little bit to get used to. The radius ρ isn’t difficult to understand. The angle θ isn’t so bad either, since it corresponds to the θ of the familiar polar coordinates.
www.math.umn.edu/~nykamp/m2374/readings/sphcoord/