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Frequency
by: LIBRA
“How often” the particles of the medium vibrate when it passes a medium.
It is the number of complete back-and-forth vibrations of a particle per unit of time.
Frequency
Unit: Hertz (Hz)
where: 1 Hertz= 1 vibration/second
Frequency
Each particle of the medium vibrates at the same frequency.
This is sensible since each particle vibrates due to the motion of its nearest neighbour.
Frequency
o Subsequently, a guitar string vibrating at 500 Hz will set the air particles in the room vibrating at the same frequency of 500 Hz, which carries a sound signal to the ear of a listener, which is detected as a 500 Hz sound wave.
Frequency
Also refers to the number of compressions (high pressure) or rarefactions (low pressure) that pass a given point per unit of time.
A detector could be used to detect the frequency of these pressure oscillations over a given period of time.
The frequency is simply the reciprocal of the period.
A sound wave with a high frequency would correspond to a pressure time plot with a small period while sound wave with low frequency would correspond to a pressure time plot with a large period
Frequency
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