3pc Equilateral CrystalPrisms Set -1",2" & 4" Lengths Crystal Triangular Prism Optical Prisms Glass Physics Teaching Refracted Light Spectrum Rainbow Maker Photography Props

3pc Equilateral CrystalPrisms Set -1",2" & 4" Lengths Crystal Triangular Prism Optical Prisms Glass Physics Teaching Refracted Light Spectrum Rainbow Maker Photography Props

Physics Optical Experiment Set Multifunction Reflector Refraction Triangular Prism Convex Lens Concave Mirror Dial Linear Light Source Teaching Demonstration Equipment for Teacher Student Education

4 Pack K9 Optical Crystal Photography Prism Set, Include 50mm Crystal Ball, 50mm Crystal Cube, 50mm Triangular Prism, 50mm Optical Pyramid with Wiper Cloth and Box, Photography Accessory for Teaching