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Steradians =
Polar Angle =
Cone (pink) Height =
Cone Cap (blue) Area =
What is a steradian? Just like radians measure the angle of a circle, steradians measure the solid angle of a sphere. When you get an angle of a circle, that represents a slice of the circle. When you get a solid angle of a sphere, that represents the sort of cone-like shape you see cut out of the sphere above.
Confusing, right? That's why I made this tool to visualize what a solid angle and its corresponding steradian value actually look like in 3D. Try adjusting the height using the slider in the top right.
Check out the code on
jerrutledge's GitHub
Jeremy Rutledge's website home