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trough - the lowest point below the rest position; amplitude - the maximum displacement of a point of a wave from its rest position
- Longitudinal Waves
In longitudinal waves close longitudinal wave A wave that...
- Test
Learn about and revise wave properties, calculations...
- BBC Bitesize
A wave transfers energy from one place to another. Examples...
- Longitudinal Waves
The trough of a wave is the point on the medium that exhibits the maximum amount of negative or downward displacement from the rest position. The wave shown above can be described by a variety of properties. One such property is amplitude.
A wave transfers energy from one place to another. Examples of waves include: water waves, sound waves, light waves, radio waves, microwaves, x-rays, ultrasound waves and seismic waves from an ...
A wave’s frequency can be measured by how many crests (or how many troughs) pass a location in a certain amount of time. A wave with a larger frequency has more energy. If a wave’s frequency doubles, its energy also doubles. A wave’s energy is proportional to the square of its amplitude.
In the figure, the wave itself moves to the right with a wave velocity v w. Its amplitude X is the distance between the resting position and the maximum displacement—either the crest or the trough—of the wave.
The frequency of a wave is the number of waves produced by a source each second. It is also the number of waves that pass a certain point each second. The unit of frequency is the hertz (Hz).
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A Crest point on a wave is the highest point of the wave. A crest is a point on a surface wave where the displacement of the medium is at a maximum. A trough is the opposite of a crest, so the minimum or lowest point of the wave.
