bright.ness
AHD:[br?t“n?s]
D.J.[6bra!tn!s]
K.K.[6bra!tn!s]
n.（名詞）
The state or quality of being bright.
明亮，光輝：處於明亮的狀態或性質
The effect or sensation by means of which an observer is able to distinguish differences in luminance.
敏銳：觀察者賴以能夠分辨不同光度的效應或感覺
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：壹種顏色的範圍，表示它與壹系列從很昏暗（黑）到很明亮（耀眼）的無色彩的顏色之間的相似處