Tired of the tiny spectrum that results from a prism?
Teach about color and spectroscopy with this complete kit. Mount the grating in front of the projector lens, on the top of your overhead projector, and project a broad, bright spectrum on the wall. Use the included color filters to show color addition and subtraction, and use the unique "Anti-slit" mask to show complementary colors.
Kit includes Holographic Diffraction Grating, projector mount, slit and anti-slit masks, primary and secondary color filters with spectral graphs, and complete instructions.
Products being sold are not toys. They are for Educational / Laboratory use only. They are not for use by children 12 and under.
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