noun🔗ShareStéradianIn 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. "Le réflecteur de la lampe concentre la lumière dans un angle solide d'environ un stéradian, fournissant un éclairage focalisé.mathphysicsunitChat with AIVocabulary GamePractice Reading
