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Damaging Economies and Ecosystems: Light Pollution in Logan City

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by Rachel Nydegger on 15 April 2013

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Transcript of Damaging Economies and Ecosystems: Light Pollution in Logan City

Effects of Light Pollution The Environment Thousands of migratory birds
were disoriented by and
trapped within the Ground
Zero memorial lights in 2010.
- FLAP


Sea turtle hatchlings often die from heading towards cities rather than the light reflecting off of the ocean. The Economy According to the International Dark-Sky Association, an estimated 30% of street lighting is wasted. Considering an average of $0.10 per kilowatt-hour, this amounts to the yearly waste of: Astronomy Excess ambient light obscures the night sky, forcing astronomers to use special filters for their telescopes. Damaging Economies and Ecosystems: Light Pollution In Logan City What is Light Pollution? Do People Care? Major Cause of Light Pollution My Research "Artificial light which shines where it
is neither wanted, nor needed." - International
Astronomical Union (IAU) April 11th is the last day of International Dark Sky Week Recent Herald Journal articles: February 20 - Article recognizing Logan city's switch to Dark-Sky compliant outdoor fixtures.
March 10 - Citizens thank Cache Valley Oxygen for recent measures against light pollution. 3.6 tons of coal
12.9 million barrels of oil
$2.2 billion in the U.S. I use A Sky Quality Meter and GPS to measure light pollution on USU campus and in Logan city. Future Work URCO funding has enabling me to acquire equipment to analyze the output of light fixtures directly as well as take remote, continual ambient light pollution data.

Learn new techniques for gathering and analyzing light pollution data at Kitt Peak National Observatory over the summer.

Keep collecting data from Logan city and USU campus. Inefficient Shielding Using the Sky Quality meter, the light pollution directly overhead is integrated and rated on an arbitrary scale.
Three reading are averaged at every fifty steps.
The latitude and longitude are tracked by the GPS so a light pollution map can be made. To Get Involved: 'The City Dark' - Available at Merrill-Cazier library International Dark-Sky Association Globe at Night - Next opportunity to contribute is April 29th. $809,597 in Cache Valley Rachel Nydegger
Shane L. Larson, Ph.D., Mentor
Student Showcase
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