# What is the metric for spherical coordinates?

## What is the metric for spherical coordinates?

 Metric tensor The fact that the metric tensor is diagonal is expressed by stating that the spherical polar coordinate system is orthogonal. We see that the metric tensor has the squares of the respective scale factors on the diagonal.

## Are spherical coordinates Euclidean?

The spherical coordinates of a point P are then defined as follows: The radius or radial distance is the Euclidean distance from the origin O to P. The inclination (or polar angle) is the angle between the zenith direction and the line segment OP.

## How do you convert Cartesian coordinates to spherical coordinates?

To convert a point from spherical coordinates to Cartesian coordinates, use equations x=ρsinφcosθ,y=ρsinφsinθ, and z=ρcosφ. To convert a point from Cartesian coordinates to spherical coordinates, use equations ρ2=x2+y2+z2,tanθ=yx, and φ=arccos(z√x2+y2+z2).

## Are spherical coordinates non Euclidean?

The surface of a sphere, it should be pointed out, satisfies all the postulates of Euclid except for the fifth and the second, which states that “Any straight line segment can be extended indefinitely in a straight line.” From a modern point of view the surface of a sphere provides a perfectly interesting example of a …

## How do you find spherical polar coordinates?

In spherical polar coordinates, h r = 1 , and h φ , which has the same meaning as in cylindrical coordinates, has the value h φ = ρ ; if we express ρ in the spherical coordinates we get h φ = r sin θ . Finally, we note that h θ = r .

## What is the difference between polar and spherical coordinates?

Spherical coordinates define the position of a point by three coordinates rho ( ), theta ( ) and phi ( ). is the distance from the origin (similar to in polar coordinates), is the same as the angle in polar coordinates and is the angle between the -axis and the line from the origin to the point.

## How do you read spherical coordinates?

Spherical coordinates determine the position of a point in three-dimensional space based on the distance ρ from the origin and two angles θ and ϕ. If one is familiar with polar coordinates, then the angle θ isn’t too difficult to understand as it is essentially the same as the angle θ from polar coordinates.