This is the biggest solid prism you'll find anywhere!
Prisms are a classic science teaching tool because of their excellent refractive properties. Equilateral prisms are the best for creating beautiful spectra.
3" equilateral prism, 4" long, it makes bright rainbows from sunlight or artificial sources like an overhead projector.
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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