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solid angle

/ˈsɒlɪd ˈæŋɡl/

翻译: 从一点观察时,物体在三维空间中所张开的几何量,等于物体在单位球面上投影的面积,也等于球面面积除以半径的平方。单位为球面度(立体弧度)。

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C1formalcommonscientific/ˈsɒlɪd ˈæŋɡl/

A three-dimensional geometric measure of the field of view from a point, defined as the area of a spherical surface subtended by an object divided by the square of the radius. It is measured in steradians.

  • 🇨🇳从一点观察时,物体在三维空间中所张开的几何量,等于物体在单位球面上投影的面积,也等于球面面积除以半径的平方。单位为球面度(立体弧度)。
  1. Three-dimensional angle C2 formal

    The angle formed in three-dimensional space by the intersection of lines from a point to the edges of a surface, measured in steradians.

    • The solid angle of a sphere is 4π steradians.
    • Engineers calculate the solid angle to determine light intensity from a source.
    • The concept of solid angle is essential in physics and astronomy.

    🇨🇳立体角