A Michelson interferometer is used to measure the wavelength of light emitted from a . As the adjustable mirror is slowly moved through a distance DA...

A Michelson interferometer is used to measure the wavelength of light emitted from a ... As the adjustable mirror is slowly moved through a distance DA = 0.0265 mm, an observer counts 411 alternations between bright and dark fields. What is the wavelength of the monochromatic light used in this experiment?