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Optical Bench Concave Convex Lens Physical Laboratory Optical Kit Kids Physics Optics Starter Kit Teaching Equipment *Basic physical optics experiment box: You can use this set of optical equipment to conduct optical experiments, and you can adjust different lights with your children. *Through experiments in multiple projects to understand how light moves,... Optical Bench Concave Convex Lens Physical Laboratory Optical Kit Kids Physics Optics Starter Kit Teaching Equipment

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