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• 09:54, 25 April 2022 Physdemo talk contribs created page Blackboard Optics Kit (Created page with "{{NewDemo|subject=Light and Optics|topic=Geometrical Optics|file1=Blackboard Optics.gif}} A metal surface has a grid glued on it. A light ray box is capable of putting out parallel light rays on the metal surface. Mirrors and lenses of various shapes can be placed on this surface. The focal point can be demonstrated by showing where the parallel rays converge. Can also be used to demonstrate how images are formed. Works well for all large lecture rooms. '''Location: ''...")