26.4. Polarization and the Reflection and Refraction of Light

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Presentation transcript:

26.4. Polarization and the Reflection and Refraction of Light Electromagnetic Wave

Polarized and Unpolarized Light

26.4. Polarization and the Reflection and Refraction of Light

Dispersion

26.5 The Dispersion of Light: Prisms and Rainbows

Indices of Refraction n of Crown Glass at Various Wavelengths  Approximate Color   Wavelength in Vacuum (nm)   Index of Refraction, n   Red   660   1.520   Orange   610   1.522   Yellow   580   1.523   Green   550   1.526   Blue   470   1.531   Violet   410   1.538 

Simulation http://www3.interscience.wiley.com:8100/legacy/college/cutnell/0471151831/concepts/index.htm

The Physics of Rainbows When sunlight emerges from a water droplet, the light is dispersed into its constituent colors, of which only two are shown.

Rainbow

Primary & Secondary Rainbow

Primary Rainbow Water droplet disperses the light into colors.

Secondary Rainbow Colors are reversed and less intense.

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