6d20.21.HTML
6d20.21: DIFFRACTION SPECTRA - GRATING ON OVERHEAD PROJECTOR

PURPOSE: Very simple white light diffraction spectrum.

DESCRIPTION: A slit is placed on the platform of the overhead projector, and a STAR grating is positioned on the upper exit lens of the projector. Filters or other transluscent slides can be placed on the slit to see their spectra on a screen.

The picture above shows the spectra of red, green, and blue filters with a full white light spectrum between each filter.

SUGGESTIONS:

REFERENCES:

EQUIPMENT: STAR diffraction grating, overhead projector slit, and color filters.

SETUP TIME: 5 min.


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