brightnessbright.nessAHD:[brºt“n¹s] D.J.[6bra!tn!s]K.K.[6bra!tn!s]n.（名词）The state or quality of being bright.明亮。

光辉：处于明亮的状态或性质The effect or sensation by means of which an observer is able to distinguish differences in luminance.敏锐：观察者赖以能够分辨不同光度的效应或感觉Color The dimension of a color that represents its similarity to one of a series of achromatic colors ranging from very dim (dark) to very bright (dazzling).【色彩】 亮度：一种颜色的范围。

表示它与一系列从很昏暗（黑）到很明亮（耀眼）的无色彩的颜色之间的相似处。