steradian

Английский Язык - Турецкий язык

Определение steradian в Английский Язык Турецкий язык словарь: steradyan

Английский Язык - Английский Язык

Определение steradian в Английский Язык Английский Язык словарь: In the International System of Units, the derived unit of solid angle; the solid angle subtended at the centre of a sphere of radius r by a portion of the surface of the sphere that has area r2. Symbol: sr; A steradian is defined as the solid (spatial) angle which, having its vertex at the center of the sphere, cuts off an area equal to the square of its radius So, 1 steradian has a projected area of 1 square meter at a distance of 1 meter, etc A sphere contains 4*pi steradians; A unit solid angle on the surface of a sphere equal to the square of the sphere's radius; A unit of solid angle One steradian equals the solid angle subtended at the center of a sphere by 0 25PI of the surface area of a sphere of unit radius; Steradian is the solid angle that, having its vertex in the center of a sphere, cuts off an area of the surface of the sphere equal to that of a square with sides of length equal to the radius of the sphere; the unit of solid angle adopted under the Systeme International d'Unites; In the International System of Units, the derived unit of solid angle; the solid angle subtended at the centre of a sphere of radius r by a portion of the surface of the sphere that has area r[2]. Symbol: sr; A solid angle with vertex at the center of a sphere of radius r that encompasses an area of r2 on the surface of the sphere; The metric unit of solid angle See metric system; The common unit used to measure solid angle, equal to a unit area cut in the surface of the unit sphere Since the surface area of the unit sphere is 4pi, the maximum solid angle is 4pi steradians