Oscilloscope
Lesson 9 / 13
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Lesson outcome
You can interpret and explain sound waves shown on an oscilloscope.
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An oscilloscope is a displacement-time graph of a wave
Connected to a microphone, an oscilloscope shows a displacement-time graph of a sound wave
The distance between two wave crests on an oscilloscope’s graph is equal to the period of the wave
The time period is measured most accurately by measuring the time for, say, 10 waves and dividing time by 10
The bigger the amplitude of a sound wave, the louder the sound
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