Light pollution is becoming an issue that more people are become aware with. Learn about light pollution in this online guide.

1. Your Online Guide To Light Pollution

2. Introduction Light pollution is becoming an issue that more people are becoming aware of with growing concern Light pollution by definition is the adverse effects of excessive artificial light It includes the alteration of natural light both outdoors and indoors.

3. Introduction It makes seeing the stars in the night sky almost impossible in bigger cities, as well as interfering with the observation of the night sky for astronomers It is also disrupting our ecosystems, and can have adverse effects on our wildlife There have been studies that show that light pollution can also have negatives effects on our health.

4. Glare Glare is the light that shines into a drivers eyes as they drive down the road Glare can be very dangerous because it causes reduced visibility while driving, and is the cause of many accidents An example glare would be the lights on a neighborhood street that shine directly down into a drivers eyes

5. Glare These lights are there with the intent of increasing the security in a neighborhood, when they are actually reducing it because both drivers and pedestrians can’t see well There are two kinds of glare; blinding glare and disability glare Both kinds can be dangerous for drivers and pedestrians alike

6. Light Clutter Light clutter is the excessive grouping of lights It can cause confusion as well as distract people from obstacles Light clutter can lead to accidents both on the road and in the sky. It is found along roads where there are many brightly lit advertisements or even just streetlights that are not designed properly

7. Light Clutter On runways, the lights of nearby commercial lighting can cause light clutter This causes confusion for pilots trying to land planes

8. Light Trespass Light trespass is unwanted light on other people’s property For example, a house in a neighborhood has a bright light on their house that shines brightly into the window of their neighbor’s home Light trespass can cause sleep deprivation

9. Light Trespass There are many cities and towns in the U.S. that now have standards and ordinances in respect to outdoor lighting A simple change in light fixtures can be the first step in reducing light trespass

10. Over-Illumination The concept of over-illumination is simply excessive light Over-illumination can include the amount of light used in areas both when they are occupied and unoccupied There are studies that show that over-illumination can lead to adverse health effects including headaches, stress, and high blood pressure

11. Over-Illumination One of the biggest causes of over-illumination is light in unoccupied rooms Many commercial buildings keep the lights on even when the workforce has gone for the day This results in a large amount of wasted energy

12. Sky Glow Sky glow is the effect that looks like an orange glow in the sky that is seen over highly populated places It is a combination of all the light reflecting and escaping up to the sky, and then being redirected by the atmosphere back down towards the earth

13. Sky Glow Sky glow is measured on a scale with nine classes The night sky is rated according to how dark it is and how visible the sky glow is The best way to reduce sky glow it to choose lights that limit amount of light that reflects up

14. Sky Glow Sky glow is measured on a scale with nine classes The night sky is rated according to how dark it is and how visible the sky glow is The best way to reduce sky glow it to choose lights that limit amount of light that reflects up

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