These are merely a few of the possible negative effects light pollution has on our world. A very serious issue in our modern-day society is that light pollution is a terrible waste of energy.
Reducing light pollution is not difficult. Light pollution is the easiest type of pollution to end. On an individual level, people can help reduce much sky glow by using lighting only when necessary and by choosing well shielded lighting fixtures. The stars above us are a priceless heritage—not only for astronomers but for all humans. More of our children should be able to look up at night and see that the Milky Way is not just acandy bar.
或许你觉得光污染不是什么了不得的大事。或许你认为其他任何一种污染对环境造成的影响都要比光污染严重。没准儿在此之前你连听都没听说过光污染。或许此刻它并没有污染湖泊、空气或者地球上的生物,但是光污染之严重,需要大家协力解决。
光污染,也称“人工白昼”,在夜晚的城镇上空均可见到这种发光现象。自大约1.5万年前人类生起第一堆火起,光污染问题就一直伴随着人类,科学技术只是令这一问题更加严重而已。光污染属杂散光,来源于街灯、广告牌、建筑物、停车场、露天体育场以及其他反射或直射入大气层中的照明光。而空气污染又使光污染问题愈发严重,因为漂浮在空气中的小颗粒通过散射和反射光线,加剧了这一问题。由于光污染导致明暗对比降低,夜空中较暗物体的能见度因此而下降,这给专业及业余天文学者都造成了影响。光污染使星座、流星雨甚至行星都变得模糊不清,遮蔽了我们的视线。
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