What is a steradian?

Q: What is a steradian?


A: A steradian is an SI unit used for measuring solid angles.

Q: How is a steradian different from a radian?


A: A steradian is similar to a radian, but it measures solid angles for smooth 3D objects, like a sphere.

Q: What is the symbol for steradian?


A: The symbol for steradian is sr.

Q: What does a steradian measure?


A: A steradian measures solid angles.

Q: What is the relationship between a sphere and a steradian?


A: A steradian is about one twelfth of the surface area of a sphere, regardless of how big the sphere is.

Q: Is a steradian a common unit of measurement?


A: No, a steradian is not a very common unit of measurement.

Q: What are some other examples of 3D objects that a steradian might be used to measure?


A: Some other 3D objects that a steradian might be used to measure include cones, pyramids, and cylinders.

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