Household incandescent bulbs are very heavy on the red end, while cool white fluorescents are weak in reds and strong in the blue end.

在家庭中，白炽灯泡能发出很强的红光，却很少量的蓝光。

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The 12-inch red traffic lights as an example, is used in the United States have long life, low-efficiency 140 watt incandescent lamp as a light source, it produced 2,000 lumens of white light.

以12英寸的红色交通信号灯为例，在美国本来是采用长寿命、低光效的140瓦白炽灯作为光源，它产生2000流明的白光。

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In the mid-winter grayness of northern Europe not a trace of red or blue anywhere the light seems to have gone out, but at least one soul remains incandescent.

NEWYORKER: The Ninth Day