光强的定义 英文表达
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解决时间 2021-11-16 14:21
- 提问者网友：斑駁影
- 2021-11-15 19:01
光强的定义 英文表达
最佳答案
- 五星知识达人网友：長槍戰八方
- 2021-11-15 19:58
发光强度简称光强，国际单位是candela（坎德拉）简写cd，其他单位有烛光，支光。1cd即1000mcd是指单色光源（频率540x10^12HZ）的光，在给定方向上（该方向上的辐射强度为（1/683）瓦特/球面度））的单位立体角发出的光通量。可以用基尔霍夫积分定理计算。
The luminous intensity or intensity, the international unit is candela (candela) (CD, other units have a candle light. 1 CD or 1000 MCD refers to monochromatic light source (frequency 540 x10 ^ 12 hz) of the light, in a given direction (the direction on the radiation intensity of (1/683) w/steradian)) from a luminous flux per unit solid Angle. Can use the kirchhoff integral theorem is calculated.
The luminous intensity or intensity, the international unit is candela (candela) (CD, other units have a candle light. 1 CD or 1000 MCD refers to monochromatic light source (frequency 540 x10 ^ 12 hz) of the light, in a given direction (the direction on the radiation intensity of (1/683) w/steradian)) from a luminous flux per unit solid Angle. Can use the kirchhoff integral theorem is calculated.
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- 1楼网友：一叶十三刺
- 2021-11-15 21:13
Luminous intensity is an expression of the amount of light power emanating from a point source within a solid angle of one steradian
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