Light rays bend to conform to the shape of the lenses. Suitable for optical experiments. You can get rainbow colors from a prism. They are glass, not plastic, very transparent.
Optical Crystal Photography Prisms Science
3 Review
π Certified Plastic Eclipse Glasses Shades
Enhancing Learning with Optical Photography Triangular Teaching Education
Lines Inch Diffraction Grating Sheet
π§ Enhancing Anatomy Learning: Portable & Detachable Enlarged Anatomical Education Aid for Students
Anatomical Chart of Spinal Nerves and Dermatomes
π Laminated Anatomical Pack for Skeleton Ligaments
KISSTAKER Removable Heart Visceral Educational Parts