Optics > Interference > Gratings
DCS# 6D20.20
VIDEO PROJECTOR SPECTRUM
APPARATUS
video projector
201
large diffraction grating
202-21-C5
laptop with slit or color mixer program
206
DESCRIPTION
Use the north projector to project the image of a slit through a diffraction grating onto the center screen. The RGB sliders can be used to show color mixing and the associated spectra.
REFERENCES
Physics Education, Volume 42, issue 3 (May 01, 2007), p. 232-233
