Solid Angle Calculator

Calculate Solid Angle (Ω)



Formula

The formula to calculate the Solid Angle (Ω) is:

\[ Ω = \frac{A}{r^2} \]

Where:

What is a Solid Angle?

A solid angle is a measure of how large an object appears to an observer located at a given point. It is analogous to the concept of an angle in two-dimensional space but is used to describe the field of view in three-dimensional space. The solid angle is measured in steradians (sr), which is a dimensionless unit because it represents a ratio of areas.

Example Calculation

Let's consider an example:

Using the formula to calculate the Solid Angle:

\[ Ω = \frac{100}{10^2} = \frac{100}{100} = 1 \, \text{steradian} \]

This means that the solid angle is 1 steradian.