Three Way Linear Light Source with adjustable direction for flexible optical experiments Key benefits Adjust light direction easily: use a screwdriver to set the lighting angle and orientation to fit your experiment setup. Supports basic optical investigations: suitable for refraction experiments and lensrelated demonstrations. Safe, reliable lens kit: lenses are designed for classroom use and practical teaching applications. What it is A compact optical teaching kit centered on a threeway linear light source that enables adjustable illumination for simple optics experiments. The system is designed to be safe and practical for educational use, helping students observe light behavior with clear, handson results. What's included Biconvex Lens Single Concave Lens Glass Tile Double Concave Lens Triangular... Usage scenarios Refraction demonstrations: illuminate lenses and glass tiles to observe how light bends at interfaces and how different lens shapes affect light paths. Lens comparisons: explore focal behavior by comparing convex and concave lenses in simple setups, helping students understand converging and diverging properties. Basic optics experiments: use the kit components in introductory projects to study light direction, lens effects, and image formation in a handson learning environment.