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Prisms
Optical elements that refracts lights (has multiple flat, polish surface)
Angle of deviation
Shows amount of overall refraction by a prism
Angle between IR entering & RR existing
∠i + ∠e = ∠a + ∠d
Dispersion of light
The separation of white light into its component colours
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
Wavelength
Long wavelength = small angle of deviation
Short wavelength = big angle of deviation
Rainbow Formation
Water droplets act as tiny prisms that disperse light of sun
- natural phenomena of light dispersion