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Visible light


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Visible light

  1. 1. Visible light and Color
  2. 2. What is an observation? <ul><li>Something you see or notice </li></ul>
  3. 3. Look around the room with the lights on and off…. <ul><li>Light ON </li></ul><ul><li>Light OFF </li></ul>
  4. 4. What’s the difference? <ul><li>Objects seem brighter and in more color when the light is on. Dark rooms lack color and detail. </li></ul>
  5. 5. What does it mean to be illuminated? <ul><li>An object reflects light </li></ul>
  6. 6. What types of light are there? <ul><li>Incandescent, fluorescent, neon, sodium vapor, tungsten, halogen </li></ul>
  7. 7. What does incandescent mean? <ul><li>WHITE HOT – filament gets hot </li></ul>
  8. 8. What is a filament? <ul><li>A small piece of coil that glows when it gets hot </li></ul>
  9. 9. What does all color depend on? <ul><li>How it reflects and refracts light </li></ul>
  10. 10. You see…. <ul><li>An objects color based on what light it reflects and absorbs </li></ul>
  11. 11. What about Black and white? <ul><li>Black </li></ul><ul><li>White </li></ul>
  12. 12. Why can’t you see well at night? <ul><li>There is no light to reflect off objects so your cones are not used at night </li></ul>
  13. 13. What about colored light? <ul><li>An object will look different colors based on the color of light because different colors are reflected or reflects into your eye </li></ul>
  14. 16. What is a prism? <ul><li>A triangular shaped translucent object which reflects light </li></ul>
  15. 17. Picture time!
  16. 18. Picture time!
  17. 19. Picture time!
  18. 20. Picture time!
  19. 21. What is Visible light <ul><li>Shorter wavelengths and higher frequencies than infrared… </li></ul><ul><li>Colors ROYGBIV </li></ul>
  20. 22. Wavelength <ul><li>Red shortest </li></ul><ul><li>Violet longest </li></ul>