Talk:Skyglow

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• Skyglow: the effect of poor lighting (CfDS) (examples of skyglow in the UK) - broken link

Article Review:

- Focus on your citations and their formatting. - Looks to be a good start. — Preceding unsigned comment added by GSaundersLikeGlue (talk • contribs) 19:26, 20 March 2012 (UTC)

== Peer Review == clarence

I think this is a really interesting topic and one that should be of worry with the ever growing Urbanization we have talked about in class. There is good information here, however, it seems as though there needs to be more citations made, specifically I noticed in the section discussing the effects of skyglow. Clhen88 (talk) 16:18, 27 March 2012 (UTC)

After reviewing this article again, there continues to be need for citations and attribution to main key ideas/points and other significant information that is lacking sources. It it important to keep with the wikipedia guidelines for a well layed out wikipedia page. Overall there is a fair amount of effort put into this wikipedia page. With the proper corrections, this page could see a bright future. It is an interesting topic. Just make sure your stray away from essay style and making opinions. — Preceding unsigned comment added by GSaundersLikeGlue (talk • contribs) 18:46, 28 March 2012 (UTC)

Artificial lights can disrupt the migratory schedules of birds causing them to leave too early or too late in the season, missing ideal conditions for nesting. Birds that navigate by moonlight and starlight can wander off course. Millions die every year by colliding into needlessly illuminated buildings. Every year, the Fatal Light Awareness Program (FLAP) “displays” these victims of light pollution to raise public awareness. (51)” “It is estimated that nearly 30% of outdoor lighting is wasted due to this poor design. In the United States alone, wasted lighting accounts for 1.7 million tons of carbon dioxide and $2.2 billion in wasted electricity each year”(38)” “For thousands of years, man lived in synchronicity with day and night patterns, his wakefulness and sleep tracking light and dark. Then he invented artificial light and suddenly our rhythms were out of sync. We extended the day, and got a lot more done—but with impacts to our physiology that we're still only beginning to understand. (27)”

“This kind of engineering is no different than damming a river. Its benefits come with consequences—called light pollution—whose effects scientists are only now beginning to study. Light pollution is largely the result of bad lighting design, which allows artificial light to shine outward and upward into the sky, where it's not wanted, instead of focusing it downward, where it is. Ill-designed lighting washes out the darkness of night and radically alters the light levels—and light rhythms—to which many forms of life, including ourselves, have adapted. Wherever human light spills into the natural world, some aspect of life.(19)

“Light pollution also contributes to atmospheric pollution. Nitrate radicals that help in control of smog are destroyed in excessive artificial lights which increases pollution in the atmosphere.(9)”
“The lighting source which doesn't emit light above its horizontal plane can be classified as proper lighting. If light designs follow this guideline, the problem of light pollution can be greatly minimized. (7)”

“Glare is a visual sensation --162.219.72.138 (talk) 19:42, 22 February 2016 (UTC)caused by excessive and uncontrolled brightness. It can be disabling or simply uncomfortable. It is subjective, and sensitivity to glare can vary widely. Older people are usually more sensitive to glare due to the aging characteristics of the eye. Disability glare is the reduction in visibility caused by intense light sources in the field of view, while discomfort glare is the sensation of annoyance or even pain induced by overly bright sources (Rea 2000). Compare the glare from the streetlight shown in Figure 6 to the glare from the(24)”

Dependence on distance from light source

The narrative here is not referenced, and contradicts published work. Walker (1973) found empirically 1/r^2.5 [cf. Walker's Law]; Garstang (1986) confirms Walker on average but extends to find a variable exponent with distance, from about -1.7 at 10km to about -4 at 100km (ave about -2.3). — Preceding unsigned comment added by Cluginbuhl (talk • contribs) 22:27, 10 April 2016 (UTC)

Introduction

The discussion about the Tunguska event should be removed. Yes, there are natural sources of sky glow that should be mentioned (but probably not in the intro), but this is not one and it is not correctly described or interpreted. Sky glow following the Tunguska event did not arise from light produced at the event itself. Cluginbuhl (talk) 18:44, 15 April 2016 (UTC) Removed Cluginbuhl (talk) 23:33, 17 April 2016 (UTC)

Effects on the Ecosystem

Wind turbines do not produce any skyglow, and do not have any effect on "human neurology".

The last paragraph, concerning the effects on plants, is not supported by the last source cited, which does not contain the words "photosynthesis", "agriculture" or even "plants" apart from a single mention of electrical power plants. The only reason (some) plants require darkness is to regulate reproduction (e.g. to initiate flowering), and the low level of illumination of leaves by skyglow does not interfere with that, nor is it intense enough to cause photosynthesis. Marijuana, a short day plant, will flower in backyards in large cities. At least I try (talk) 19:24, 30 April 2016 (UTC)

External links modified (January 2018)

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• Added archive https://web.archive.org/web/20050817122717/http://home.earthlink.net/~sac8/SkyglowBits.htm to http://home.earthlink.net/~sac8/SkyglowBits.htm
• Added archive https://web.archive.org/web/20041126100405/http://www.star.le.ac.uk/~dbl/cfdsdisk/cfdsdisk/Towns%20and%20skyglow/ to http://www.star.le.ac.uk/~dbl/cfdsdisk/cfdsdisk/Towns%20and%20skyglow/

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