can yoy plz tell me about light pollution?

Answer 1

Light pollution as a problem

"Light pollution" (also known as photo pollution, luminous pollution) refers to light that people find annoying, wasteful or harmful. It also causes damage to the environment and health, as do other forms of pollution such as air pollution, noise pollution, water pollution and soil contamination.

Many people wish to reduce light pollution. However, it is unrealistic to expect populations to significantly reduce their light pollution, due to industrial society's economic reliance on man-made light. Detractors posit that light pollution is a problem similar to traditional forms of pollution. Energy conservation advocates contend that light pollution must be addressed by changing the habits of society, so that lighting is used more efficiently, with less waste and less creation of unwanted or unneeded illumination. The case against light pollution is strengthened by a range of studies on health effects, suggesting that excess light may induce loss in visual acuity, hypertension, headaches and increased incidence of carcinoma.

Several industry groups also recognise light pollution as an important issue. For example, the Institution of Lighting Engineers in the United Kingdom provides its members information about light pollution, the problems it causes, and how to reduce its impact[1].

Since not everyone is irritated by the same lighting sources, it is common for one person's light "pollution" to be light that is desirable for another. One example of this is found in advertising, when an advertiser wishes for particular lights to be bright and visible, even though others find them annoying. Other types of light pollution are more certain. For instance, light that accidentally crosses a property boundary and annoys a neighbour is generally wasted and pollutive light.

Disputes are still common when deciding appropriate action, and differences in opinion over what light is considered reasonable, and who should be responsible, mean that negotiation must sometimes take place between parties. Where objective measurement is desired, light levels can be quantified by field measurement or mathematical modeling, with results typically displayed as an isophote map or light contour map. Authorities have also taken a variety of measures for dealing with light pollution, depending on the interests, beliefs and understandings of the society involved. Measures range from doing nothing at all, to implementing strict laws and regulations about how lights may be installed and used.

Types of light pollution

Light pollution is a broad term that refers to multiple problems, all of which are caused by inefficient, annoying or arguably unnecessary use of artificial light. Specific categories of light pollution include light trespass, over-illumination, glare, clutter, and sky glow. It is common, however, for annoying or wasteful light to fit several of these categories.

Answer 2

What the above answerer has written is absolutely correct.
Excessive light created by Humans which are harmful for the ecosystems, etc is known as Light pollution.

For further information you can see the following page in wikipedia:
http://en.wikipedia.org/wiki/Light_pollution
According to the above page there are two types of light pollution:
1)Light pollution in visible spectrum
2)Light pollution in radio spectrum

If you want you can check even that.

Answer 3

Stars are in the sky, whether you can see them or not.
During the day, there is too much light to see them hardly at all.
At night, star are easier to see, but near cities, light pollution from electrical lights difuse the light coming from the stars and make them harder to see.
Get out to a country area or even out to sea and more stars are visible ... not because they were not above the cities, but simply because there is not distracting man made light to disguise them.

Answer 4

sure!!!!! severe gentle toxins motives birds to place eggs before than everyday. In some components this could recommend the toddlers is genuinely no longer waiting to stay to inform the tale. additionally, it wreaks havoc with migratory birds. (a million) (3) gentle toxins is threatening turtles and their reproductive cycles. (2) additionally, it has an fairly unfavorable impact on our sleep cycles, probable inflicting insomnia and different issues. (3) Noise toxins is definitely fairly terrible for coming up toddlers, and could probable be a contributing element to Autism. (4)

Answer 5

nooooooo


i can'tttttttttt

Answer 6

sorry