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armand-mcmahon
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Light

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Presentation Transcript

  1. Light

  2. Colour

  3. How do we see colours?

  4. White light, the light you see from globes, fluorescent tubes or the sun, is made up of lots of different colours.

  5. White light

  6. Red

  7. Orange

  8. Yellow

  9. Green

  10. Blue

  11. Indigo

  12. Violet

  13. Rainbow

  14. Red

  15. Red Orange

  16. Red Orange Yellow

  17. Red Orange Yellow Green

  18. Red Orange Yellow Green Blue

  19. Red Orange Yellow Green Blue Indigo

  20. Red Orange Yellow Green Blue Indigo Violet

  21. We can separate the colours in white light in a controlled setting.

  22. So what is happening?

  23. Transparent (clear) prism

  24. Ray of light

  25. Refraction at surface due to difference in densities

  26. Internal Reflection. Some of the light is internally reflected.

  27. Refraction again as the density changes