PURPOSE: To demonstrate total internal reflection of microwaves in a paraffin prism.
DESCRIPTION: The microwave beam enters the paraffin 90 degree prism normal to one short surface, reflects internally off the longer surface, and exits normal to the second short surface. Rotate the prism to maximize the internally reflected bea m. Removing the paraffin block removes the beam from the receiver, which can then be positioned directly in front of the transmitter to get the beam back.
REFERENCES: (PIRA unknown.)
EQUIPMENT: Microwave transmitter, 90 degree paraffin prism, and microwave receiver with meter on overhead projector.
SETUP TIME: 5 min.
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