noun🔗ShareСтерадианIn 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"The lamp's reflector concentrates the light into a solid angle of approximately one steradian, providing focused illumination. "Отражатель лампы концентрирует свет в телесном угле примерно в один стерадиан, обеспечивая сфокусированное освещение.mathphysicsunitChat with AIVocabulary GamePractice Reading
