A technician uses a Michelson interferometer with sodium light ( nm) to measure the…
PHYSICS · Subjective · Fermi University Physics · Optics & Photonics · Interference and diffraction · Interference and diffraction
Optics and Photonics, Ch Two-beam interference and interferometry
Problem
A technician uses a Michelson interferometer with sodium light (λ=589 nm) to measure the thickness of a gauge block by moving one mirror back until it touches the block, a displacement of Δd=15.0μm. Find the number of fringes counted as the mirror moves through this distance.