Al Tobias (wat4y) - Office: Gibson S123 & Physics 218, (434) 924-0538
Demonstrations are cataloged according to PIRA Bibliography
PLEASE REQUEST DEMOS WELL IN ADVANCE
Due to Physics Building renovations, the lead time to set up demo requests has increased due to the need to transport equipment across campus. Please be kind and let me know well ahead of time what you need.
Choose a Topic or Enter a keyword to search:
You have selected the following Demos:
Purpose:An example of a birefringent material (Calcite) occurring in nature.
Birefringence is double refraction (having two refractive indices). When passing a beam of light through a crystalline solid, the beam is split into two rays.
Place a piece of paper with a small hole in the middle on the overhead projector and place the calcite crystal over the hole. Two holes will now be visible on the screen, one caused by the ordinary ray and one by the extraordinary ray. A polariod can be placed in the path and rotated to show that the rays are polarized in mutually perpendicular directions.