Scientific experiment---Our optical triangular prism is used for scientific experiment involving spectrum. Precise cutting---The precise cutting of our optical triangular prism can provide users with good reflection and light separation. Variable angle---Our optical triangular prism is equipped with a bracket to facilitate changing the prism angle. Applicable objects---Our optical triangular prism can be used for teaching physics spectrum. High-quality materials---Prism parts are made of high-quality optical glass, which can be used for one time. Description: Triangular 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 developintelligence of children. Features: 1. Made from high quality optical glass, the prism part can be removed for single use. 2. Precise cuttings offer good reflections and light separation. 3. Come with a stand, convenient to change prism angle. 4. Can be used for teaching physics light spectrum. 5. Used in science experiments involving light spectrum. Specifications: Material: plastic stand, optical glass prism Stand Color: black Size (L*W): 16*9cm Weight: Approx. 109g Package Includes: 1 x Optical Triangular Prism 1 x Black Stand Instruction: Put prism under sunlight. Rotating prism till light appear seven colors on a wall or white paper. Note: Please allow small deviation due to manual measurement. Thanks for your understanding.