What Does SR Stand For?

SR stands for Steradian

SR, or Steradian, is a unit of measurement used in three-dimensional geometry to quantify solid angles. It is defined as the solid angle subtended at the center of a sphere by an area on the surface of the sphere equal to the square of the radius of the sphere. One steradian encompasses an area on the surface of a unit sphere equal to 1 square unit and is a key concept in fields such as physics, engineering, and computer graphics for calculations involving light, sound, and other forms of spatial distribution.

Other Meanings for SR