光温和光度

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光温和光度

光温是指光的温度, 有表面温度和辐射温度.
光度是指光的强度.

光度高的, 不见得光温高.
比如
灯泡的设计, 光温便较低, 但光度会较高.

而像太阳, 则是光温高和光度也高.

光度的高低, 取决于波长和波的高低,
所以传统上,
光度高的物体, 最好加上罩子, 比较不伤眼,
比如桌上型电脑萤幕,
其波长便比较强,
最好加上护目镜.

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