Quick Answer: The Rectangular Isosceles Prism is a right-angle prism for ray optics: it turns a beam by total internal reflection at its hypotenuse face and refracts light at its other faces.
Last updated: October 2026
Key Features
Right-angle isosceles prism
Total internal reflection at the hypotenuse face
Beam turning, deviation and ray tracing
Used with ray boxes, laser ray boxes, optical benches and screens
About This Product
With a ray box, students trace a ray entering one short face and reflecting at the hypotenuse to leave at right angles, the principle used in periscopes and binoculars. Turning the prism shows how the emergent ray changes direction. The Rectangular Isosceles Prism can be supplied on export terms to Kenya, Burkina Faso, Vietnam, Malaysia, Dominican Republic and Equatorial Guinea.