Eisco Labs 3 Piece Acrylic Prism Set - Ultra Durable and Lightweight - 1, 2, and 4 Inch Lengths - Designed for Teaching Physics and Refracted Light - Create Spectrums, Create Rainbows for Photography

EISCO equilateral acrylic prisms, set of 3 - 25, 50, 100mm lengths(3) prisms this set is of highly polished acrylic equilateral prisms -- 25mm sides and lengths of 25, 50 and 100mm. Prisms will create a nice rainbow (even in room light) by using the simple led light of a smart phone (such as an iPhone). User will need to create a small slit in a black piece of paper and use that slit in front of the led which will create a light ray. The prisms will then refract the white light and create a nice rainbow on a target away from the prism. The farther away you move the target the bigger the rainbow gets and the more distinct colors the user can see. A great tool for teaching refraction and science education, or for just having fun .