每日背誦第三期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.
光污染造成的破壞，來(lái)自戶外照明的設(shè)計(jì)不當(dāng)。大多數(shù)城市現(xiàn)在所使用的戶外照明，不僅遠(yuǎn)遠(yuǎn)超過(guò)所需的亮度，還照射到不需照明的區(qū)域。這些多余的照明，碰到空氣中的微塵粒子和水分子后發(fā)生反射，就造成空中的“霞光”現(xiàn)象。“霞光”使云彩發(fā)出白色、桔色，或是粉紅色的光，就破壞了我們的夜景。
(短文節(jié)選,本篇始于：都是光“害”的！)
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