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Let There Be Night

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  1. Let There Be Night Information from www.nightwise.org

  2. Safety from crime Visibility on roadways Comfort when walking at night Advertising We need light, right? But we don’t need light pollution!

  3. What is light pollution? • Glare – light striking your eye • Spillover – light that lights up more than it is supposed to • Skyglow – light that goes up and makes the sky “glow”

  4. Glare (light in your eyes)

  5. Spillover(light beyond where it should be)

  6. Skyglowlight that makes the sky “glow”

  7. Why should I care? • Spoils the view of stars • Reduces your ability to see in darkness • Costs money • Wastes energy • Confuses and harms wildlife (sea turtles)

  8. These are good lights(lights are shielded and aim down)

  9. Solutions • Aim lights downward • Use lights that are fully shielded • Reduce light output (not so bright)

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