Wave Crest

Crest and trough

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.

Wave

In mathematics and physical science, a wave is a propagating dynamic disturbance of one or more quantities. Periodic waves oscillate repeatedly about an equilibrium (resting) value at some frequency. When the entire waveform moves in one direction, it is said to be a traveling wave; by contrast, a pair of identical superimposed periodic waves traveling in opposite directions makes a standing wave. In a standing wave, the amplitude of vibration has nulls at some positions where the wave amplitude appears smaller or even zero.

wave

Verb

1. To move back and forth repeatedly and somewhat loosely.
2. To move one's hand back and forth (generally above the shoulders) in greeting or departure.

Noun

1. A moving disturbance in the level of a body of liquid; an undulation.
2. The ocean.

crest

Noun

1. The summit of a hill or mountain ridge.
2. A tuft, or other natural ornament, growing on an animal's head, for example the comb of a cockerel, the swelling on the head of a snake, the lengthened feathers of the crown or nape of bird, etc.

Verb

1. Particularly with reference to waves, to reach a peak.
2. To reach the crest of (e.g. a hill or mountain).