A 5.08-cm-long rectangular glass chamber is inserted into one arm of a Michelson interferometer using a 633-nm light source. This chamber is initially filled with air at standard atmospheric pressure but the air is gradually pumped out using a vacuum pump until a near perfect vacuum is achieved. How many fringes are observed moving by during the transition?
When the traveling mirror of a Michelson interferometer is moved m, exactly 95 fringes pass by a point on the observation screen. What is the wavelength of the light used? Give your answer to three significant figures.
A Michelson interferometer is used to measure the wavelength of light passing through it. When the movable mirror in the interferometer is displaced by 0.230 mm, the number of moving fringes observed is 284. What is the wavelength of the light?