每日背诵第三期49
The damage caused by light pollution comes from poorly designed outdoor lighting. Most cities in the world today use outdoor lighting that is not only far too bright, but also directed to places where it is not needed. This wasted light reflects off tiny particles of dust and moisture in the air, causing skyglow. Skyglow causes clouds to glow white, orange, or pink, and destroys our view of the nighttime sky.
光污染造成的破坏，来自户外照明的设计不当。大多数城市现在所使用的户外照明，不仅远远超过所需的亮度，还照射到不需照明的区域。这些多余的照明，碰到空气中的微尘粒子和水分子后发生反射，就造成空中的“霞光”现象。“霞光”使云彩发出白色、桔色，或是粉红色的光，就破坏了我们的夜景。
(短文节选,本篇始于：都是光“害”的！)
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