1. Color Chapter 28

2. Color Lab What colors are formed by mixing different colors of light? Consensus:

3. The Color Spectrum Newton experimented with light and prisms, and discovered that white light is broken into a spectrum of colors.

4. Color by Reflection We see the color of things because it reflects or absorbs light.

5. Color by Reflection The red light in a developing room makes the man’s blue shirt appear black because it absorbs all colors but blue.

6. Color by Transmission We also see color because that’s the only light allowed through a transparent object.

7. Color by Transmission

11. Sunlight The sun gives off all wavelengths of light, but it gives it off unevenly. The highest intensity of light is yellow-green. That’s why it’s easiest for us to see at night in a yellow light.

12. Mixing Colored Light The primary colors of light are red, green and blue. The secondary colors of light are a combination of those three, two at a time.

13. Mixing Colored Light The secondary colors of light are yellow, magenta and cyan. All three primary colors of light together are white.

14. Mixing Colored Light Complementary colors of light also produce white. For example: Red and Cyan are complementary colors What other complementary colors do you see?

15. Mixing Colored Light So where does orange light come from?

16. Mixing Colored Light On a sheet of paper, answer the following questions: (Write both the questions and the answers.) What do you get when you combine red and green light? What do you get when you combine green and magenta light? What color would a blue dress appear to be in a room with only red light?

17. Mixing Colored Light So why when you mix red, green and blue paint do you get brown and not white?

18. Pigments A pigment is any colored material or substance that selectively absorbs different colors of light. We see pigments because of a subtractive process.

19. Pigments we seesubtractsreflects yellow red black

20. Pigments we seesubtractsreflects yellowbluered + green red black

21. Pigments we seesubtractsreflects yellowbluered + green redblue + greenred black

22. Pigments we seesubtractsreflects yellowbluered + green redblue + greenred blackred + blue + greennone

23. Pigments Primary pigments:yellow, cyan, magenta Secondary pigments:red, blue, green Complementary pigments:produce black

24. Light & Pigments