Oa-6 Corner Reflector
Published: Wednesday 15 March 2006 - Updated: Thursday 19 April 2007
Aim
To demonstrate a retroreflector.
Apparatus
3 Mirror corner
Diagrams
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Description
The three mirrors arranged to have three mutually perpendicular faces have the property of being retrodirective; i.e. it will reflect all incoming rays back along their original directions. when viewed from any angle the image of the observer always appears at the vertex of the three mirrors. Alternatively a laser beam directed to the reflector comes straight back. A cloud of chalk dust makes the beams visible to the class.