brightness

名词 brightness:

1. the location of a visual perception along a continuum from black to white
2. intelligence as manifested in being quick and witty
   同义词：cleverness, smartness
3. the quality of being luminous; emitting or reflecting light
   同义词：luminosity, brightness level, luminance, luminousness, light

1. The act or an instance of gradually diminishing in brightness, loudness, or strength until actual disappearance occurs.
   逐渐消失在亮度、响度或精力上逐渐减弱直至全部消失的活动或例子
2. A unit of retinal illumination, equal to the amount of light that reaches the retina through 1 square millimeter of pupil area from a surface having a brightness of 1 candela per square meter.
   光度视网膜亮度单位，相当于每平方米有一烛光亮度的表面，通过一平方毫米的瞳孔区域，到达视网膜的光线数量
3. Stars vary in brightness.
   星星光亮度不同。
4. The light hurt my eyes with its brightness.
   明亮的灯光刺痛了我的眼睛。

bright.ness

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