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Snell's law helps us to determine 1.How much time light spends in a material 2.The angle by which light bends when entering a different material 3.
Snell's law helps us to determine
1.How much time light spends in a material
2.The angle by which light bends when entering a different material
3.The speed of light in a vacuum with standard temperature and pressure
4.Spherical aberration of a telescope.