Physics 806 - Prisms & Dispersion of Light

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6 Terms

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<p><strong>Prisms</strong></p>

Prisms

Optical elements that refracts lights (has multiple flat, polish surface)

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Angle of deviation

  • Shows amount of overall refraction by a prism

  • Angle between IR entering & RR existing

  • ∠i + ∠e = ∠a + ∠d

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Dispersion of light

The separation of white light into its component colours

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Why does dispersion of light happen?

White light is made up of various colors which have different wavelengths & speed. Therefore they get refracted at different angles when passing a prism

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Wavelength

Long wavelength = small angle of deviation
Short wavelength = big angle of deviation

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Rainbow Formation

Water droplets act as tiny prisms that disperse light of sun
- natural phenomena of light dispersion