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http://www.physics.unl.edu/~fulcrum/

http://www.physics.unl.edu/~fulcrum/ Department of Physics & Astronomy University of Nebraska-Lincoln Lincoln NE 68588-0111 fulcrum2@unl.edu 402-472-8685 Color By Christine DeVries. What is COLOR?. The Electromagnetic Spectrum. 3. wavelength. 0.001. 0.01. 0.1. 1. 10. 100. 10 3. 10 4.

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http://www.physics.unl.edu/~fulcrum/

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  1. http://www.physics.unl.edu/~fulcrum/ Department of Physics & AstronomyUniversity of Nebraska-LincolnLincoln NE 68588-0111fulcrum2@unl.edu402-472-8685Color By Christine DeVries

  2. What is COLOR?

  3. The Electromagnetic Spectrum 3

  4. wavelength

  5. 0.001 0.01 0.1 1 10 100 103 104 105 106 107 108 109 1010 1011 1012 The Electromagnetic Spectrum Ultra-violet Infrared X-rays Micro-wave EHF SHF UHF VHF HF MF LF ELF Gamma rays 1013 1014 1015 Wavelength(nm)

  6. 0.001 0.01 0.1 1 10 100 103 104 105 106 107 108 109 1010 1011 1012 The Electromagnetic Spectrum 400 nm 500 nm 600 nm 700 nm Ultra-violet Infrared Micro-wave X-rays EHF SHF UHF VHF HF MF LF ELF Gamma rays 1013 1014 1015 wavelength(nm)

  7. ColorAddition Mixing Light

  8. If I mix red and blue, I will get... a) brown b) yellow c) magenta d) cyan

  9. Red + Blue = Magenta!

  10. If I mix red and green, I will get... a) brown b) yellow c) magenta d) cyan

  11. Red + Green = Yellow

  12. If I mix blue and green, I will get... a) brown b) yellow c) magenta d) cyan

  13. Blue + Green = Cyan

  14. Green Yellow Cyan Red Magenta Blue

  15. + = + = + =

  16. The Additive Primary Colors R G Red Green B Blue

  17. + = + = + =

  18. White Light

  19. White Light

  20. White Light ?

  21. White Light Yellow Light

  22. Yellow Light White Light Yellow = Red + Green

  23. Yellow Light White Light Yellow = Red + Green

  24. Yellow and Blue are complimentary

  25. Yellow and Blue are complimentary If you add yellow light and blue light, you get white light + =

  26. + =

  27. + = + + =

  28. Green Yellow Cyan Red Magenta Blue

  29. and and and Complimentary colors

  30. ColorSubtraction Mixing Pigments

  31. Cyan Magenta Yellow The Subtractive Primary Colors C M Y

  32. White Light Yellow Light Yellow dye absorbs all colors EXCEPT yellow

  33. Yellow Light White Light = Red + Green Yellow dye absorbs all colors EXCEPT yellow

  34. Yellow Light White Light = Red + Green Yellow dye absorbs all colors EXCEPT yellow

  35. White Light Cyan Light cyan dye absorbs all colors EXCEPT cyan

  36. White Light Cyan Light = Blue + Green cyan dye absorbs all colors EXCEPT cyan

  37. White Light green! yellow dye + cyan dye leaves ???

  38. Yellow Green ue Red Cyan Blue Magenta

  39. 0.001 0.01 0.1 1 10 100 103 104 105 106 107 108 109 1010 1011 1012 The Electromagnetic Spectrum 400 nm 500 nm 600 nm 700 nm Ultra-violet Infrared Micro-wave X-rays EHF SHF UHF VHF HF MF LF ELF Gamma rays 1013 1014 1015 wavelength(nm)

  40. Green Yellow Cyan Red Magenta Blue

  41. Yellow Green ue Red Cyan Blue Magenta

  42. and and and Complimentary colors

  43. Thanks To The National Science Foundation Center for Materials Research & Analysis Center for Electro-Optics Center for BioTechnology Department of Physics & Astronomy Department of Chemistry Department of Electrical Engineering

  44. White Light red dye absorbs all colors EXCEPT red

  45. White Light green dye absorbs all colors EXCEPT green

  46. White Light all colors! red dye + green dye absorbs ???

  47. White Light cyan dye + green dye absorbs ???

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