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Lit Up

Lit Up. Light is a type of Wave. The idea of light and other particles is based on their wavelike propagation through space. A wave is defined by the distance between its peaks Distances range from 1x10 -14 m to 1x10 4 m. Use the scale below to estimate the Energy per wavelength.

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Lit Up

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  1. Lit Up

  2. Light is a type of Wave • The idea of light and other particles is based on their wavelike propagation through space. • A wave is defined by the distance between its peaks • Distances range from 1x10-14 m to 1x104 m

  3. Use the scale below to estimate the Energy per wavelength.

  4. The LED is based on Physics and Chemistry • Red light emission (700 nm) requires energy release of 1.77 electron-Volts (eV) • Violet light emission (400 nm) requires 3.1 eV http://hyperphysics.phy-astr.gsu.edu/Hbase/electronic/led.html

  5. LED Benefits • Solid-state device • Efficiency • No Heat • Longevity  • Future  http://www.carolinaleds.com/ledfacts7benefits.html

  6. LED Applications, Uses, and Headlines • GE OLED (Organic LED) • http://www.ge.com/research/grc_2_9_1.html • Cartoon Network’s ATHF marketing campaign • http://www.cnn.com/2007/US/01/31/boston.bombscare/index.html • MIT Disco Dance Floor • http://www.scotttorborg.com/disco-dance-floor/index.html

  7. Wavelength/Energy use in Research • Fourier Transform Infrared (FTIR) spectroscopy • Attenuated Total Reflection (ATR)

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