Prisms are a classic science teaching tool because of their excellent refractive properties. Equilateral Glass Prisms are the best for creating beautiful spectra. This optical prism allows you to demonstrate how white light can be split up into many different colors. The spectrum of colors will look like a rainbow.
Prisms are a classic science teaching tool because of their excellent refractive properties. Right-angle prisms can demonstrate total internal reflection, neatly turn light beams 90 degrees (use two to build a periscope) or split a single laser beam into two!