Light Pollution

   Light pollution is constituted of three main concepts: sky glow, light trespass, and glare. Sky glow is the amount of man-made light in the night sky above inhabited areas. Light trespass is the amount of light wasted in street lights, field lights, etc. Glare is the excessive brightness off of one or more objects from the 80 – 90-degree viewpoints.

   In the late 20th century, Astronomers recognized light pollution as a problem. It was beginning to obscure the view of the star-filled night sky. The naked eye could not see it and advanced technology designed to see the stars, could not.

   Light pollution also poses a problem for the United States Military. The training conducted in the U.S. Military is mostly conducted at night. Night-time training is important to prepare soldiers for combat training under the natural glow of the night sky. When the sky is lit up with excessive and artificial  light, however, training become significantly less realsitc.

   When the sky is lit up with excessive and artificial  light, however, training become significantly less realistic.

   The health of human beings is negatively affected by light pollution. The natural circadian rhythm or our patterns of sleep are interrupted by excess light. This causes a less restful night sleep and in some cases no sleep at all.

   According to the National Sleep Foundation, sleep deprivation can lead to distinct changes in mental, physical and emotional health.

   Wildlife is as negatively affected by light pollution as well. The death of baby sea turtles in Florida, birds dying during migration, and decline of lighting bugs are among the examples of the negative impact, light pollution has on wildlife.

   Tens of millions of dollars are lost every year in the U.S. due to sky glow and light trespass. The bulb used in a light fixture plays a key role in this situation.

   Certain bulbs use a high number of watts ( the amount of energy it takes to produce a certain amount of light ) which result in a brighter bulb. hey also consume a high amount of energy. Modern day sodium lights such as LPS and HPS, provide a high output of brightness and are efficient.

   They also consume a high amount of energy. Modern day sodium lights such as LPS and HPS, provide a high output of brightness and are efficient.

   State legislations are the type of government to made a decision on this issue. They can pass laws to regulating the effects of light pollution. Fully shielded light fixtures would be the main way for a state legislature to limit light pollution in their jurisdiction.

   These shields would envelop light bulb as well as significantly reduce light going to any area other than the intended area. This helps reduce the light trespass. The shield encompasses the bulb, providing minimal glare from any angle. Ensuring better visibility of the area around them and the dark night sky.

    Engulfed in a shield, the light is dimmed, and the brightness of the light is aimed down. Thus using the light for its intended purposes only. Millions of dollars would be saved. Energy efficiently would go up. Lastly, sky glow would go down.

   State Legislations could pass laws regulating the time certain lighting fixtures are in operation. For example, use of certain light fixtures during predetermined night-time could be prohibited. Emergency lights, tunnels, and lights used for aviation purposes would be exceptions.

   Fewer street lights can make a big different. Since they are responsible for the majority of light pollution, removing excess light fixtures are a must to minimize light pollution.

   These are some of the ways that light pollution could be reduced or ended. Bringing back the dark night sky full of visible stars, planets, and galaxies.



  • SEPCO. “Wattage vs Lumens: Know the Difference for Better Lighting.” Solar Electric Power Company, 5 July 2016. Web. 12 Oct. 2016.
  • Legislatures, National Conference of State. “About Us.” Resources for State Legislators and Legislatures. National Conference of State Legislatures, n.d. Web. 12 Oct. 2016.
  • Lighting and Research Center. “What Is the Difference between Full Cutoff and Fully Shielded?” Rensselaer Polytechnic Institute, Mar. 2003. Web. 12 Oct. 2016. Revised in March 2007
  • “STATES SHUT OUT LIGHT POLLUTION.” National Conference of State Legislatures, 23 May 2016. Web. 12 Oct. 2016.
  • Nasser, Haya El. “More U.S. Cities Dimming the Lights.” Gannett, 30 Dec. 2010. Web. 12 Oct. 2016.
  • Hauri, Peter, Dr. “National Sleep Foundation.” Normal Sleep. National Sleep Foundation, n.d. Web. 13 Oct. 2016.
  • Losing the Dark – Flat Screen Version. International Dark Sky Association’s YouTube Channel, 27 Feb. 2013. Web. 11 Oct. 2016.
  • A World without Light Pollution (4K). David Oliver Lennon’s YouTube Channel, 20 Nov. 2016. Web. 11 Oct. 2016.
  • Center, Copyright 2015 Edison Tech. “The Sodium Lamp – How It Works and History.” The Sodium Lamp – How It Works and History. Edison Tech Center, 2013. Web. 12 Oct. 2016.

Published by Random Writer on November 20, 2016, at 12:00 am


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