- Sections
- A. General Materials & Mathematics
- B. Statics
- C. Kinematics & Dynamics
- D. Rotational Mechanics
- E. Gravitation & Astronomy
- F. Fluid Mechanics
- G. Vibrations & Mechanical Waves
- H. Sound
- I. Thermodynamics
- J. Electrostatics & Magnetostatics
- K. Electromagnetic Principles
- L. Geometrical Optics
- M. Wave Optics
- N. Spectra & Color
- O. Vision
- P. Modern Physics
H3-02. Standing Sound Waves - Reflection
Purpose
To demonstrate the origin of standing waves from one source and its reflection.
Equipment
Audio oscillator, small speaker, plane reflector and microphone on optical rail, audio amplifier, and dual trace oscilloscope.
Setup Time
10 min.
Images
Description
A loudspeaker is driven at about 3000 Hz by a sine wave oscillation which is displayed on the top trace of the oscilloscope. The standing wave pattern, created by the sound from the speaker and the wave reflected off the flat metal plate, is picked up by a microphone sliding along the optical rail and displayed on the lower trace of the oscilloscope. ◙
References
Robert R. Meijer, Demonstrations on Standing Sound Waves, AJP 16, 360, (1948). ◙Francis W. Sears, Measurement of the Wavelength of Sound Wave, TPT 3, 79, (1965). ◙S. S. Lesty, A Method for Measuring the Sound Wavelength in Gases, AJP 31, 996-98, (1963). ◙J. Rekveld, On the Teaching of "Stand Waves," AJP 26, 159-163, (1958). ◙Directions For Use of Small Speaker, Leybold Heraeus 58006.
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See pagesh1. nature of sound
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See pagesh2. wave properties of sound
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See pagesh3. standing sound waves
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See pagesh4. music
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See pagesh5. the ear
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See pagesh6. the voice
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See pagesh1. nature of sound
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See pagesh2. wave properties of sound
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See pagesh3. standing sound waves
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See pagesh4. music
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See pagesh5. the ear
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See pagesh6. the voice