noun🔗Shareステラジアン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"The lamp's reflector concentrates the light into a solid angle of approximately one steradian, providing focused illumination. "ランプの反射板は、光を約1ステラジアンの立体角に集中させ、集中的な照明を提供します。mathphysicsunitChat with AIVocabulary GamePractice Reading
