Question

mirrors path 2 incoming light path 1 half-silvered mirror interference pattern 1. Shown above is a simplified diagram of a Michelson interferometer. Imagine placing a flat plate of transparent material in path 2 and rotating it slightly with respect to the beam. If the thickness of the plate is known to be d show that the rotated thickness is where 45 is the cos φ small angle of rotation. Using this change in the path length, find an expression for the index of refraction of the material in terms of the interference fringes that are counted assuming you also know the wavelength of the light.

Answer 1

Fer small amale A C

t the bianr havds though the dlut out At mudl be raual te na cod ol