Editing Index of wave articles (section)

==S==
*[[S-wave]]
*[[Sampling (signal processing)]]
*[[Sawtooth wave]]
*[[Schrödinger equation]]
*[[Sea state]]
*[[Seiche]]
*[[Seismic wave]]
*[[Seismograph]]
*[[Seismology]]
*[[Sellmeier equation]]
*[[Shallow water equations]]
*[[Shive wave machine]]
*[[Shock wave]]
*[[Shortwave radio]]
*[[Signal velocity]]
*[[Significant wave height]]
*[[Sine wave]]
*[[Single-sideband modulation]]
*[[Sinusoidal plane-wave solutions of the electromagnetic wave equation]]
*[[Skywave]]
*[[Slow-wave potential]]
*[[Slow-wave sleep]]
*[[Sneaker wave]]
*[[Solitary wave (water waves)|Solitary wave]]
*[[Soliton]]
*[[Sonar]]
*[[Sonic anemometers]]
*[[Sound wave]]
*[[Spark-gap transmitter]]
*[[Spectroscopy]]
*[[Speed of gravity]]
*[[Speed of light]]
*[[Speed of sound]]
*[[Spike-and-wave]]
*[[Spin wave]]
*[[Square wave (waveform)|Square wave]]
*[[Standing wave]]
*[[Standing wave ratio]]
*[[Stefan–Boltzmann law]]
*[[Stokes drift]]
*[[Stokes wave]]
*[[Subharmonic]]
*[[Super low frequency]]
*[[Superharmonic]]
*[[Superposition principle]]
*[[Supersonic Wave Filter]]
*[[Surface acoustic wave]]
*[[Surface wave]]
*[[Surface wave inversion]]
*[[Surface-wave magnitude]]
*[[Surface-wave-sustained discharge]]
*[[Surfing]]
*[[Sverdrup wave]]
*[[Swell (ocean)]]
*[[Synthetic-aperture radar]]