light pollution

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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.
References in periodicals archive ?
Reducing excessive lighting can simply involve turning off some of the fluorescent lights in the room and using blinds or curtains to reduce direct sunlight reflecting off surfaces in the classroom.
We''re hoping to gather evidence to support our campaign to rein in excessive lighting, which is also a huge waste of energy and money.
"In particular, we ask landlords to look out for premises with blacked-out windows and excessive lighting" from workers' unions Unite and GMB, who are currently in the process of trying to secure a fair redundancy package for those who will lose their jobs.
EirGrid has revealed the demand for electricity increases by about 100 megawatts in the run up to Christmas because of excessive lighting.
Selectmen last night acknowledged the issues with Diamond that started in February 2007 when neighbors complained about the cutting down of trees and excessive lighting. Chairman Elizabeth L.
The reasons for eyestrain among computer users include primary and secondary glare, excessive lighting, improper ergonomics, poor-quality or inappropriately adjusted video display terminals (VDTs), uncorrected or improperly corrected vision, and insufficient or non-existent eye care.
Neighbors of the Diamond dealership complained to the selectmen in February 2007 about the cutting down of trees and excessive lighting in the area.
In the second half Ploetz surveys various attempts to control light pollution, from past and more recent common-law claims of excessive lighting to new developments in state statutory legislation and local ordinances.
"I would urge everyone to be vigilant and in particular landlords, to beware of unusual activity such as infrequent callers to the premises, blackened out windows and excessive lighting.