ruumi osa, mida piirab kooniline pind ja seda lõikav kate
ISQ derived quantity with special name
solid angle is a measure of the amount of the field of view from some particular point that a given object covers
solid angle made up of all the lines from a closed curve meeting at a vertex, is defined by the surface area of a sphere subtended by the lines and by the radius of that sphere, as shown below
A solid angle is a three-dimensional extension of a standard two-dimensional angle, measuring how large an object appears from a specific point in space.
