Dr Rosa Doran - Light Pollution - ISE Webinar

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Light PollutionInspiring Science Education

Webinar

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The new world atlas of artificial night sky brightness (We are loosing our

skies) Falchi et al (2016)

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Earth from Space !!!!!

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Tracy Caldwell Dyson in the ISS

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Lisbon by Night

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Space from Earth !!!!!

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What is light pollution?

© National Geographic Kids

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roVincent Van Gogh – Starry Night Over the Rhone (1888)

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Light Pollution is the excessive and inadequate use of artificial light.

Some consequences:

-Waste of energy

- Obstacle to astronomical observations

-Impact on living beings

-Waste of money

-Atmospheric pollution

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Types of Light Pollution:

GlareToo much background light Reduces visibility

Light TrespassLight spills into an area where it is unneeded and/or unwanted

Sky GlowUpward directed light reflects off of particles in the sky reducing visibility of stars

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More light doesn’t mean more security!

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Excessive illumination may affect our circadian rhythm and diminish the production of important hormones such as melatonin.

Sleep disturbances that may lead to obesity, stress, depression and diabetes

IT AFFECTS OUR HEALTH

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Impact on Fauna

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Birds in their migration routes

100 million birds die every year in Noth America colliding with artificial structures.

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ro Insects are attracted by artificial light. Interfere in their mating rituals and in their migration patterns.

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Lesser Long-Nosed BatThey feed from the nectar of certain plants .

They are responsible for the pollination of several types of plants.

The are getting extinct

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Impacts on Astronomy

Observatório de Mt. Wilson, California

1908

2008

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http://www.lightpollutionmap.info/

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Good Bad

Very Bad

Public Illumination

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Copyright

Roberto F Silvestre

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YES, WE CAN!!!

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The Light Shielding Demo (Part of the Quality Lighting Kit - NOAO)

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EXAMPLES OF GOOD AND BAD LIGHTING

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http://www.need-less.org.uk/

Needless light simulator

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Educating and creating awareness.

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If you are a member just search for the light pollution demonstrator (part of the ISE community)

Else:

http://bit.do/lightpollution_student

http://bit.do/light_pollution_preview

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Thank You

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