Science teachers, students, and curious minds - this triangular prism is seriously cool! Made from high-quality K9 optical glass measuring 40x40x180mm (about 1.6x1.6x7.1 inches), it creates beautiful, bright rainbows by splitting light into its spectral components. It's perfect for teaching physics concepts about light, color, and how rainbows form. You can demonstrate to kids that white light actually contains all the colors of the rainbow - it's way more impactful than just reading about it in a textbook. But it's not just for education; photographers love using these prisms to create unique lighting effects and filters for their camera lenses. The optical glass provides clear, sharp refraction with minimal distortion. It comes in a nice gift box, making it perfect for science enthusiasts, teachers, or anyone who appreciates the beauty of physics. Whether you're setting up classroom demonstrations, doing home experiments, or exploring creative photography techniques, this prism delivers both educational value and pure visual wonder. Watching light transform into a spectrum never gets old, and this quality prism makes that magic happen every time.