LED-Light-Box-Optical-Set-Rapid-LED-Light-Box-Optical-Set-P-A-comprehensive-light-and-optics-set-including-a-3-beam-ray-box-and-a-selection-of-lenses-and-prisms-teacher-s-notes-and-9-pupil-work-cards-P-P-The-set-is-ideal-for-advanced-study-of-light-and-optics-and-includes-experiments-to-show-refraction-and-reflection-through-various-shaped-prisms-and-lenses-the-splitting-of-light-into-rainbow-colours-how-internal-reflection-is-used-in-fibre-optic-cables-and-the-appropriate-lenses