6A42.10 – Blackboard Optics – Refraction Block
This demonstration shows how light travels by different speeds through different media which causes the angle of its trajectory to change.
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6A42.53 – Blackboard Optics – Prism
This demonstration uses triangle and light to show how light consists of all the colors.
6A60.15 – Blackboard optics – Semicircle made of glass
This demonstration shows how light behaves when it hits a half-circle made of glass.