Suppose that you can translate one of the mirrors in a michelson interferometer, that you can accurately measure how far you’ve moved the mirror, and that you want to determine the wavelength of your laser by counting how many fringes go by as you move the mirror. suppose you know by its color that the laser wavelength is approximately 600 nm. suppose that your accuracy in counting fringes is  0.3 fringes, and that this sets the accuracy of your wavelength determination. about how far would you need to move the mirror to determine your laser wavelength to 0.1% accuracy? give your answer in units of microns.