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H1-21: SPEED OF SOUND - PHASE CHANGE
- zzfixk23
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11 years 11 months ago - 11 years 11 months ago #786
by zzfixk23
ID Code: H1-21
Purpose: Determine the speed of sound.
Description: A sine wave is sounded by a loudspeaker and picked up by a microphone. The original sine wave triggers the oscilloscope, which displays the signal from the microphone. Motion of the microphone away from the loudspeaker, measured by a ruler or the optical rail scale, is accompanied by a phase or time delay, measured by motion of the oscilloscope trace. The speed of sound is the distance the microphone is moved divided by the additional time lag. This works best at frequencies of at least 3000 Hz.
Availability: Available
H1-21: SPEED OF SOUND - PHASE CHANGE was created by zzfixk23
ID Code: H1-21
Purpose: Determine the speed of sound.
Description: A sine wave is sounded by a loudspeaker and picked up by a microphone. The original sine wave triggers the oscilloscope, which displays the signal from the microphone. Motion of the microphone away from the loudspeaker, measured by a ruler or the optical rail scale, is accompanied by a phase or time delay, measured by motion of the oscilloscope trace. The speed of sound is the distance the microphone is moved divided by the additional time lag. This works best at frequencies of at least 3000 Hz.
Availability: Available
Last edit: 11 years 11 months ago by zzfixk21.
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