#  Standing Waves 

 



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### Wave Speed

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The speed of sound in an aluminum rod is determined by measuring its frequency and the length of the rod.

### Shive Wave Machine

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Rods attached to metal spine; transverse wave generator shows the reflection of waves free, fixed, terminated and transition boundaries.  
  
\[[In-Depth Description](/presentations/shive-wave-machine)\]

### Driven Rope of Wire

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The fundamental as well as many harmonics are seen and heard on a wire driven at various frequencies.

### Standing Wave on Long Spring

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Obtain as many harmonics as your arm can handle.  
  
\[[In-Depth Description](/presentations/standing-wave-long-spring)\]

### Vibrating String

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A 1.5m length of string driven at one end and fixed at the other shows standing waves for various driving frequencies.

\[[In-Depth Description](/presentations/vibrating-string)\]

### Longitudinal Standing Waves

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A vertically supported slinky is hand-driven to secure longitudinal standing waves.

### Standing Wave in Metal Rod

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An aluminum rod, supported in the middle, rings for a long time in its longitudinal mode.  
  
\[[In-Depth Description](/presentations/standing-wave-metal-rod)\]

### Standing Wave on Soap Film

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Normal modes of vibration on a soap film are acoustically excited.

### Resonant Fountain Tube

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Standing sound waves in a glass pipe are made evident by the fountains of kerosene inside the pipe.  
  
\[[In-Depth Description](/presentations/resonant-fountain-tube)\]

### Standing Waves in a Tube

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A glass tube is tuned to set up a standing wave for the particular excitation frequency.

### Whirl-a-tune

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A corrugated plastic tube sings as it is swung about.

### Bunsen Burner Glass Tubes

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White noise from hot turbulent air turns glass tubes into awesome organ pipes.  
  
\[[In-Depth Description](/presentations/bunsen-burner-glass-tubes)\]

### Chladni Plates

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Accumulation of sand at nodes of vibrating plate reveals resonance patterns.  
  
\[[In-Depth Description](/presentations/chladni-plates)\]

### Big Chladni Plate

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Electromagnetically driven plate to show two dimensional modes of vibration.

\[[In-Depth Description](/presentations/big-chladni-plate)\]

### Ring of Fire

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deBroglie wavelength nλ=2πr shown by gas flame in a torus.  
  
\[[In-Depth Description](/presentations/ring-fire)\]

### Ripple Tank Wave Phenomena

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Interference patterns of water waves generated by different sources at adjustable frequency.  
  
\[[In-Depth Description](/presentations/ripple-tank-wave-phenomena)\]

### Contact Us

**Mailing Address**: Lecture Demonstration Services, Science Center, Rm B-08A, 1 Oxford Street, Cambridge, MA 02138  
**Campus Location**: Science Center B-08A | **Tel**: (617) 495-5824 | **Email**: scidemos-at-fas.harvard.edu