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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.
The crest of a wave is the point on the medium that exhibits the maximum amount of positive or upward displacement from the rest position. Points C and J on the diagram represent the troughs of this wave.
As an example, for water waves, v w is the speed of a surface wave; for sound, v w is the speed of sound; and for visible light, v w is the speed of light. The amplitude X is completely independent of the speed of propagation v w and depends only on the amount of energy in the wave.
In transverse waves, crests (high spots on the wave) and troughs (low spots) alternate. In longitudinal waves, compressions (regions of high density) and rarefactions (regions of low density) alternate.
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.
26 wrz 2024 · The highest surface part of a wave is called the crest, and the lowest part is the trough. The vertical distance between the crest and the trough is the wave height. The horizontal distance between two adjacent crests or troughs is known as the wavelength.
A wave is a disturbance that moves from the point of origin with a wave velocity v. A wave has a wavelength \(\lambda\), which is the distance between adjacent identical parts of the wave. Wave velocity and wavelength are related to the wave’s frequency and period by v = \(\frac{\lambda}{T}\) = \(\lambda\)f.
