Resonance in a Loop
Purpose
Demonstrates resonance and harmonics of standing waves on a vibrating loop. Students observe that only specific discrete frequencies produce stable standing wave patterns, illustrating boundary conditions and wavelength quantization in a closed system.
Figure 1:
The flexible loop driven at 22.3 Hz showing the 3rd harmonic standing wave pattern. The Daedalon audio driver provides adjustable frequency with digital readout.
Figure 2:
The loop at 82.4 Hz displaying the 5th harmonic mode. The higher-frequency pattern has smaller amplitude distortions, making it harder to see at a distance.
Demo Apparatus
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