Columbia University Physics Lecture Demonstrations


Categories
Mechanics
Fluid Mechanics
Oscillation and Waves
Thermodynamics
Electricity and Magnetism
Optics
Modern Physics
Astronomy
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5N10.1 VCR to TV Broadcast

[Setup Time: 25 Min.] [Current Condition: Good]

Info

A two-meter dipole antenna is attached to the VHF output of a VCR. A few feet away a similar antenna is attached to the VHF input of a TV. Set both devices to channel 3, insert a tape, and watch the broadcast. Demonstrate the polarization of the EM wave by rotating one of the antennas ninety degrees, cutting off the broadcast completely.

Note: TV must be set to Channel 3 with remote control. Meter sticks should be oriented same way

Parts List

2-Meter Sticks on Back Wall

TV, VCR, Cables on Cart on Back Wall

Relevant Simulation

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Other Information

Movie of Reflection of Polarized Waves
Polarization at Radio Frequencies

Real-Life Examples

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More Advanced Reading

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