1. Color

2. Episode 2 Episode 2 – Color VIDEO ON DEMAND The search for new colors in the mid-1800’s indirectly led to the development of modern chemistry. While producing dyes, early industrial chemists learned about chemical reactions and the properties of molecules. Today, color is used in science for everything from swimming pool test kits to DNA mapping research. World of Chemistry The Annenberg Film Series

3. RGB JAVA Applet C L I C K H E R E Light is Additive Kotz & Treichel, Chemistry & Chemical Reactivity, 3 rd Edition, 1996, page 1074 Yellow = Red + Green Cyan = Green + Blue Magenta = Red + Blue Green = Yellow + Cyan Blue = Magenta + CyanRed = Yellow + Magenta

4. Light is Additive Kotz & Treichel, Chemistry & Chemical Reactivity, 3 rd Edition, 1996, page 1074 Yellow = Red + Green Cyan = Green + Blue Magenta = Red + Blue W

5. Pigments are Subtractive Blue Red Green Cyan Yellow Magenta

6. RGB JAVA Applet C L I C K H E R E

9. Kelter, Carr, Scott,, Chemistry: A World of Choices  1999, page 480

10. 1.5 1.2 0.9 0.6 0.3 0.0 300400500600700800 Wavelength (nm) Absorbance Absorbance of Chlorophyll 10 26 10 24 10 22 10 20 10 18 10 16 10 14 10 10 8 10 6 10 4 10 2 1 10 -8 10 -6 10 -4 10 -2 110 2 10 4 10 6 10 810 10 12 10 14 10 16 Frequency (Hz) Wavelength (nm) cosmic rays gamma rays x-raysultra- violet infra- red radio (microwave) radartele- vision radiopower transmission VioletBlueGreen YellowOrangeRed UV Near Infrared 400 nm 500 nm 600 nm 700 nm