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Demonstrate the principles of reflection and refraction with the Optical Block Set, which includes three well-made acrylic blocks in different shapes.

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Demonstrate the principles of reflection and refraction with this affordable optical block set. Set includes three well-made acrylic blocks in three shapes: trapezoidal, semicircular and double convex. When light passes through the trapezoidal block, it is refracted at each boundary between acrylic and air. Both refraction and reflection can easily be seen using the semicircular block. Shine three light rays through the convex lens to show how they converge at the focal point and then calculate focal length. Purchase one for classroom demonstration or multiple sets for students to study in groups! Pairs nicely with the LED Light Blocks (Catalog No. AP7771).