180 mm Triangular Optical Prism for Teaching Refraction and Spectrum Make light visible and concepts clear. This 180 mm triangular glass prism splits white light into a full visible spectrum, providing an easy to observe rainbow effect for classroom demonstrations, science projects, and handson learning. Key benefits Improves comprehension: Converts abstract lessons about refraction and dispersion into a clear visual demonstration that helps students grasp how light behaves. Ready for teaching use: Large 180 mm size produces wellseparated, bright spectral bands for easier observation from a distance or by groups. Durable optical material: Made from opticalgrade glass to deliver consistent and repeatable dispersion with minimal internal defects. Simple and versatile: No power or complex setup required. Place under a light source and rotate to show changes in angle and spectrum intensity. Main features Function: Triangular prism that refracts and disperses white light into a visible spectrum. Size: 180 mm length enables larger, clearer rainbow projection suitable for classroom or presentation use. Material: Optical glass designed for accurate light transmission and consistent dispersion. Shape: Triangular cross section optimized for splitting light and producing distinct spectral colors. How it solves common problems Makes group demonstrations effective by projecting a broader, more separated spectrum that is visible to multiple viewers at once. Removes ambiguity in textbook diagrams by providing a direct visual example of wavelength separation and refraction angles. Works with basic light sources and simple setups, reducing preparation time and the need for specialized equipment. Practical applications and use scenarios Classroom demonstrations: Use with a focused white light or LED torch to show refraction, angle dependence, and spectral during physics lessons. Student experiments and projects: Ideal for experiments measuring dispersion, comparing refractive effects at different incident angles, or documenting spectra for reports. Educational displays and science fairs: Create eyecatching demonstrations that explain color composition of light and encourage interactive exploration. Performance and handling tips results achieved with a bright, narrow light source and a darkened room to enhance the visible spectrum. Rotate the prism slowly to change the angle of incidence and observe how the spectrum shifts and separates. Handle with care and store in a soft padded case to protect optical surfaces from scratches and dust. What you receive One 180 mm triangular optical prism made from opticalgrade glass, suitable for physics teaching, student experiments, and educational gifting. This optical prism is a practical tool for educators, students, and hobbyists who want a reliable, easy to use demonstration of light refraction and the visible spectrum.