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:
video - Polarization of Microwaves
Purpose:Show the polarization property of microwaves.
Hold a grid of parallel wires in a microwave beam and rotate the grid. Observe the change in transmitted microwave power in the detector. In the figure below, the source is on the left, the detector on the right.
Microwaves are linearly polarized coming out of the source along the 0-deg/180-deg mark (horizontal plane in the picture). The horizontal orientation of the metal bars blocks the microwaves such that the detector is minimum. Metal bars oriented perpendicular (vertical) to the microwave polarization (horizontal) allows them to pass such that the detector is maximum.