The Effects Of Light Pollution On The Outdoor Environment

1103 Words Apr 25th, 2016 5 Pages
Definition: Also known as photopollution is misdirected, obstructive or unneeded artificial light. Pollution is the adding-of/added light itself, in analogy to added sound, carbon dioxide, etc. Adverse consequences are multiple; some of them may not be known yet. Scientific definitions thus include the following:
• Degradation of photic habitat by artificial light.
• Alteration of natural light levels in the outdoor environment owing to artificial light sources.
• Light pollution is the alteration of light levels in the outdoor environment (from those present naturally) due to man-made sources of light. Indoor light pollution is such alteration of light levels in the indoor environment due to sources of light, which compromises human health.[3]
• Light pollution is the introduction by humans, directly or indirectly, of artificial light into the environment.
The first three of the above four scientific definitions describe the state of the environment. The fourth (and newest) one describes the process of polluting by light.
Light pollution competes with starlight in the night sky for urban residents, interferes with astronomical observatories, and, like any other form of pollution, disrupts ecosystems and has adverse health effects. Light pollution can be divided into two main types:
• Unpleasant light that intrudes on an otherwise natural or low-light setting
• Excessive light (generally indoors) that leads to discomfort and adverse health effects
Light pollution is a…

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