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Visible Light Waves
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Visible Light Waves

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  • 1. Which band of the electromagnetic spectrum have: 1. the longest wavelength? 2. the shortest wavelength? 3. the greatest amount of energy? 4. the least amount energy? 5. wavelengths just below what humans can see? 6. wavelengths just above what humans can see? 1. Radio 2. Gamma 3. Gamma 4. Radio 5. Infrared 6. UV
  • 2. ReviewReview Infrared light Night vision Thermal imaging
  • 3. Visible LightVisible Light ROY G BIV Red has the longest wavelength, lowest energy Violet has the shortest wavelength, highest energy
  • 4. Visible LightVisible Light Every object absorbs some visible light and reflects some visible light Mirrors reflect almost all visble light
  • 5. Visible LightVisible Light In order for you to see an object, visible light must be reflected off it And meet your eye
  • 6. Visible LightVisible Light White reflects all colors (ROY G BIV) Black absorbs all colors (ROY G BIV) Red? Reflects only red
  • 7. Visible LightVisible Light It is possible to bend visible light waves in such a way: 1.That the object itself looks bent Refraction
  • 8. Visible LightVisible Light 2. The object appears to be in a different place
  • 9. Visible LightVisible Light 3. The object may not be visible at all!
  • 10. Water Tank Incident wave Reflected wave Transmitted wave Refracted wave