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C O L O R

C O L O R. The C o l o r Spectrum. The spread of colors from white light when passed through a prism or diffraction grating. Red, Orange, Yellow, Green, Blue, Violet. The C o l o r Spectrum. White Light : Light, such as sunlight, that is a combination of all the colors.

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C O L O R

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  1. COLOR

  2. The Color Spectrum • The spread of colors from white light when passed through a prism or diffraction grating. • Red, Orange, Yellow, Green, Blue, Violet

  3. TheColorSpectrum • White Light: Light, such as sunlight, that is a combination of all the colors.

  4. The Color Spectrum • Quick Experiment (5 min.): • Go to the lab stations (4 per station) • Use the white paper, light source and prism to create the color spectrum.

  5. Color by Reflection • The colors of most objects are due to the way the objects absorb and reflect light. • If it looks red under white light, the object absorbs most of the frequencies of light and reflects red. • Most materials absorb light of some frequencies and reflect the rest. • If it reflects all of the visible frequencies, then the color is white. • If it absorbs all the visible frequencies, then the color is black.

  6. MIXING COLORED LIGHT

  7. Mixing Colored Light • Almost every color can be made by overlapping light of three colors and adjusting the brightness of each color. • Additive Primary Colors: Red, Green and Blue (light). These produce the highest number of different colors. When added together, they produce white.

  8. Mixing Colored Light • What happens when two of the three additive primary colors are combined? • Red + Green = • Red + Blue = • Blue + Green =

  9. Mixing Colored Light • What happens when two of the three additive primary colors are combined? • += Yellow • += Magenta • += Cyan

  10. Complementary Colors • When two colors are added together to produce white, they are called complementary colors. • We know that: Blue+Green+Red=White

  11. Complementary Colors • We know that: Blue + Green + Red = White • So, • Cyan + Red = White • Cyan and Red are COMPLEMENTARY COLORS

  12. Complementary Colors • What is the complementary color of blue? • What is the complementary color of green?

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