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谁能告诉我光的强度的定义

更新时间: 2020-09-17 00:00:00     

光的强度是光源在单位立体角内辐射的光通量。单位为坎德拉,1坎德拉表示在单位立体角内辐射出1流明的光通量。

光的通量是由光源向各个方向射出的光功率,也即每一单位时间射出的光能量,单位为流明。

关键词: 告诉 强度 定义

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