scattering

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Sunset Egg

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0410171227

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Appearance of egg mimics that of the sky.

Glass egg is translucent, milky white, and contains no pigment- only microscopic particles that scatter light. Short wavelengths of light (blue) have a tendency to scatter off the microscopic particles in the glass; while long wavelengths of light (red and yellow) tend to pass through.  The egg therefore appears yellowish red when held in front of a light source, and blue when held in your hand.

  • Located in L01, section B-6
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Scattering and Absorption

 

Scattering and Absorption Demo Picture

Scattering and Absorption Demo Picture 2

Scattering and Absorption Demo Picture 3

  • Red laser light penetrates milky solution and is slightly attenuated (top photo).
  • Blue dye absorbs red light but not green light. Red laser attenuation is much greater than green in blue-dye/water solution.

Location

  • Lasers: L35, section A-5.
  • Dye: L35, in cabinet above sink.
  • Beaker: L35, section G-3.