Spherical coordinate system
The spherical coordinate system is one of the coordinate systems representing the points on the three-dimensional space and is usually indicated. The distance from the origin is from 0 to 0, the angle with the z axis in the positive direction is from 0 to 0, and the angle between the z axis and the positive direction x axis is 0 to. May be represented by latitude, and sometimes by latitude. Looking at these three figures, we can find the points of the space in the following way: We go along the z axis by the origin. At that point, it is in the xz plane and rotates from the z axis. Rotate the entire xz plane counterclockwise as much as the axis. The name of the spherical coordinate system is attached in this coordinate system because '' represents the unit sphere. The spherical coordinate system and the cylindrical coordinate system extend the plane polar coordinate system into space, and the spherical coordinate system is useful in the problem of spherical symmetry. For example, in the case of spherical symmetries such as hydrogen atoms, the spherical coordinate system is used to solve the Schrodinger equation.