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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.
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🇺🇸 Ship from USA · On Agora since 2025
$14.95