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Title: EM Waves - Propagation & Polarization
PIRA: 5N 10.30a

Demonstrates: Propagation and polarization in EM waves.
Description: The signal generator puts out a 433.92 MHz UHF frequency (69 cm) which is radiated via a half-wavelength dipole. A small light bulb is connected to a half-wavelength dipole to illustrate received power. The receiver can be picked up and moved around to show the falloff in power with distance, and the radiated beam pattern. The receiver can also be rotated 90 degrees to show how the radiation is polarized. Various wire grids and solid plates (metal, glass, plastic) can be inserted between the transmitter and receiver. And there is a dipole inside a water tank which can be used to show the change in wavelength when an EM wave is made to propagate through water. Good predictive demo.

Instructions: Set up on a cart in RH 103.Function Generator required for modulation of the transmitted wave. Set function generator to 1 Khz and 10 VPP.

Items Used: Leybold Dydactic GmbH UHF Transmitter,Function Generator,Leybold Dydactic GmbH Receiver Dipole with Lamp.

Notes: Leaving the setup on for extended periods of time could cause heating. Math Description: None.
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Size: Condition: Good. Hazard: None.

Schematic: None. Tech Specs: None. Web Links:
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