This small glass prism can be a wonderfully educational tool. It teaches how refracting, (or bending) white light can create a beautiful specturm of colors, much like a rainbow. It can also create some spectacular effects through your cameras viewfinder. Also useful in Arts & Crafts. * Made Of Clear Optical Glass * Measures: 1 X 1 X 1 X 3" * Prism Breaks White Light Into A Spectrum Of Colors To Demonstrate Refraction And Dispersion * Great Educational Tools * Great Construction Provides High-quality Photography Effects