一、眼睛对低光度的适应 1.实际值我们知道,人的眼睛能看清楚物体所需要的最小亮度为0.1尼特。在室外有什么样的亮度?为此,我们要首先考虑在24小时内所发生的全部照度(见下表)。地形的反射系数介于0.1和0.5之间,所列的照度乘上此系数就得到阿波熙提值,将其除以π得出亮度值。现在假定反射系数为0.16,可得出下述亮度值: First, the adaptation of the eye to low light 1. The actual value We know that the human eye can see the minimum brightness required for the object is 0.1 nits. What is the brightness outside? To do this, we first consider the full illumination that occurs within 24 hours (see the table below). The terrain’s reflection coefficient is between 0.1 and 0.5. The illumination listed multiplied by this factor yields the Apocalypse, which is divided by π to yield the brightness value. Now assuming that the reflection coefficient is 0.16, the following brightness values ​​can be derived: