일반물리학 2 — Interference: Problem 50

50 The element sodium can emit light at two wavelengths, \(\lambda_1 = 588.9950 \text{ nm}\) and \(\lambda_2 = 589.5924 \text{ nm}\). Light from sodium is being used in a Michelson interferometer (Fig. 35-21). Through what distance must mirror \(M_2\) be moved if the shift in the fringe pattern for one wavelength is to be \(2.00\) fringes more than the shift in the fringe pattern for the other wavelength?