Create Giant Spectrums -- 7-1/2" x 3-3/4" acrylic water prism and kit contains all you need to explore the science of prismatic color and light diffraction. Recreate Goethes famous experiments (1792-1810). -- Kit includes acrylic prism, 8 test cards, wooden holder and a 16-page instruction booklet.

$25.95

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VISUAL ILLUSION CARDS

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