Optical Glass Triple Triangular Prism with Stand for Physics Light Spectrum Teaching Optical Glass Triple Triangular Prism with Stand Physics Light Spectrum Tool Optical Element Large optical prism with base for easy adjustment of prism angle. Suitable for use in science classrooms from kindergarten through high school as a demonstration tool to study light dispersion. Can also be used as an educational item to support children's learning. Features: 1. Easy angle adjustment 2. Ideal for light spectrum physics instruction 3. Suitable for science experiments involving light spectrum 4. Precisely cut to provide clear reflections and effective light separation Specifications: Material: Plastic base, high-quality optical glass prism Base Color: Black Size: 8 x 2.5 x 16 cm Instructions: Place the prism in sunlight. Rotate the prism until the light projects seven colors onto a wall or white paper. Package Includes: 1 x Optical Prism 1 x Bracket Base