Additional Info

• ID Code: H3-01
• Purpose: Demonstrate the origin of standing waves from two identical sources.
• Description: Both speakers are driven by the same 3000 Hz sine wave from the audio oscillator, which is shown on the top trace of the oscilloscope. The standing wave pattern, observed by sliding a microphone along the optical rail between the speakers, is displayed on the lower trace.

  Consider showing both this and H3-02, and invite students to speculate about the differences.

• Availability: Available
• References: REFERENCES: (PIRA unknown.)