Building Toys

Physical Optics Set, Lab Optical Bench Set, Physic Experiment Teaching Full Sets Three Way Linear Light Source can be adjusted by using a screwdriver to adjust the direction of light. Optical Experiments: Refraction of light, convex lens refraction, lens refraction, prismatic refraction, etc. Package Including: Biconvex Lens;... Physical Optics Set, Lab Optical Bench Set, Physic Experiment Teaching Full Sets