Notes to a video lecture on http://www.unizor.com
For a short introduction to the International System of units (SI) see the previous lecture SI Intro & Time within topic Base SI Units.
Waves Units
All SI units used in the science of Waves are derived from base units introduced in the previous lectures of this course.
Here we will address only uniform transverse waves. Longitudinal waves have analogous units of measurement.
Frequency
The wave frequency is the number of oscillations per second.
Therefore, the unit of measurement for a frequency is 1 oscillation per second (1/s) called hertz (Hz).
1 Hz = 1 1/s
means the wave makes one oscillation per second.
Period
The wave period is an amount of time it takes for a wave to complete one oscillation.
The unit of time and, therefore, of a period is
1 second (s).
Wave Length
The wave length is a distance between two consecutive peaks of the wave.
The unit of distance and, therefore, of wave length is
1 meter (m).
Wave Speed
For a wave propagating in space the wave speed is a speed of any particular peak of the wave.
The unit of speed and, therefore, of wave speed is
1 meter per second (m/s).
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