Optical Glass Triple Triangular Prism with Stand Physics Light Spectrum Tool Optical Element Description: Large optical prism with a base is very convenient to change prism angle. It can be used in science class of kindergarten, primary school, high school, as a demonstration equipment, to study the dispersion of light. It also can be used as toy to Develop intelligence of children. Features: 1, Very convenient to change prism angle. 2, Can be used for teaching light spectrum physics. 3, Used in science experiments involving light spectrum. 4, Precise cuttings, offer good reflections and light separation. Specifications: Material: Plastic base, high-quality optical glass prism Color of Base: Black Size: 8 x 2.5 x 16 cm Instruction: Put prism under sunlight. Rotating prism till light appear seven colors on a wall or white paper. Package Includes: 1 x Optical Prism 1 x Bracket Base