The sine wave is a specific case of a periodic wave.

The concept can also be applied to periodic waves of non-sinusoidal shape.

This was followed with periodic waves of Viking invasions.

Where we are going (1700 England) they have only just got over periodic waves of bubonic plague.

The successive and periodic waves of emigration diminished the population down to roughly 14,000 inhabitants.

This process provided the motivation for much of the work on periodic travelling waves in the 1970s and early 1980s.

Invasions, which can leave a periodic travelling wave in their wake.

Patterns in the former category have the form of periodic travelling waves.

The moon is swept by periodic tidal waves that circle it every three months.

The foil lurched slightly and tipped, climbing one of the periodic high waves.