light pollution

n. Illumination of the night sky by electric lights, as in urban areas, that interferes with astronomical observations and can have negative ecological effects.

light pollution

n the glow from street and domestic lighting that obscures the night sky and hinders the observation of faint stars

Translations

light pollution

One of the factors setting a limit on the faintness of stars that may be seen, photographed, or observed or recorded by telescope. Light pollution is an excessive amount of background light mostly arising from human activities and includes street and domestic lighting, lighting of public buildings, factories, and offices, and lighting of entertainment and sports facilities used at night. Not all light pollution is of human origin, however. On a moonless night there are still three natural sources, of roughly equal contribution; these are airglow and other atmospheric effects, the zodiacal light arising from the scattering of sunlight by Solar-System dust, and the background light of our Galaxy. See also seeing.

Light pollution

The wasted light from building and landscape designs that produces glare, is directed upward to the sky, or is directed off the site.

单词	light pollution
释义	light pollution light pollution n. Illumination of the night sky by electric lights, as in urban areas, that interferes with astronomical observations and can have negative ecological effects. light pollution n the glow from street and domestic lighting that obscures the night sky and hinders the observation of faint stars Translations light pollution light pollution One of the factors setting a limit on the faintness of stars that may be seen, photographed, or observed or recorded by telescope. Light pollution is an excessive amount of background light mostly arising from human activities and includes street and domestic lighting, lighting of public buildings, factories, and offices, and lighting of entertainment and sports facilities used at night. Not all light pollution is of human origin, however. On a moonless night there are still three natural sources, of roughly equal contribution; these are airglow and other atmospheric effects, the zodiacal light arising from the scattering of sunlight by Solar-System dust, and the background light of our Galaxy. See also seeing. Light pollution The wasted light from building and landscape designs that produces glare, is directed upward to the sky, or is directed off the site.
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