Color. 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.

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Presentation transcript:

Color

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

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

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

Pigments are Subtractive Blue Red Green Cyan Yellow Magenta

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

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

Wavelength (nm) Absorbance Absorbance of Chlorophyll 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

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