A beam of light has a small wavelength spread X about a

Last updated: 6/12/2023

A beam of light has a small wavelength spread X about a central wavelength The beam travels in vacuum until it enters a glass plate at an angle relative to the normal to the plate as shown in the figure 0 86 Vacuum Glass The index of refraction of the glass is given by n X The angular spread S0 of the refracted beam is given by