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Light pollution

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Light pollution
Nelson Correia

Publicada em: Educação
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Light pollution

  1. 1. Outdoor Lighting and Light Pollution Álvaro Folhas 29 de junho de 2013
  2. 2. What is nightscape? The dark sky with the stars
  3. 3. What is nightscape? Lighting buildings, streets, and open spaces in urban areas
  4. 4. Where are the stars?
  5. 5. Light pollution in Portugal and Spain
  6. 6. Light pollution in Europe
  7. 7. Light pollution in Europe
  8. 8. Light pollution in Istambul
  9. 9. Light pollution in Egipt
  10. 10. Los Angeles in 1908
  11. 11. Los Angeles in 1988
  12. 12. Light pollution in Earth
  13. 13. What is light pollution? Glare: too much background light tat reduces visibility
  14. 14. What is light pollution? Light Trespass: light spills into an area where it is unneeded
  15. 15. What is light pollution? Sky Glow: upward directed light reflects on particles in the sky reducing visibility of stars
  16. 16. With light pollution & without With and without outdoor lights on…
  17. 17. Bad & good lighting
  18. 18. Bad lighting
  19. 19. Good lighting
  20. 20. Light pollution simulator http://www.need-less.org.uk
  21. 21. Night Sky Simulator Without light pollution (Scotland) Low light pollution Moderate light pollution High light pollution (London) http://www.need-less.org.uk
  22. 22. Without light pollution (Scotland) Low light pollution Moderate light pollution High light pollution (London) Night Sky Simulator
  23. 23. Without light pollution (Scotland) Low light pollution Moderate light pollution High light pollution (London) Night Sky Simulator
  24. 24. Without light pollution (Scotland) Low light pollution Moderate light pollution High light pollution (London) Night Sky Simulator
  25. 25. Light pollution affects… Energy, Safety & Cost Astronomical Research Human Health Wildlife
  26. 26. Solutions
  27. 27. LuminSáorliuasti obnlinsdadas
  28. 28. Solutions
  29. 29. Solutions
  30. 30. Light shielding demo
  31. 31. GLOBE AT NIGHT Citizen science program to record the brightness of the night sky http://www.globeatnight.org
  32. 32. GLOBE AT NIGHT
  33. 33. Dark Skies Rangers Portugal http://dsr.nuclio.pt

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