Diffraction Grating

GIVEN: Diffraction grating slide, red laser (650 nm), meterstick

TASKS:

a. Determine the separation of the grating

b. Predict the separation of the fringes when the distance to the screen is changed

POSTER: Derivation of equations

Extension: Design an experiment to determine the width of a stand of your hair. Compare that to a similar measurement of a known gauge of wire.