Wolfram|Alpha has wave calculators. Solve problems related to the redshift‐wavelength formula; moiré patterns; the angular frequency formula; the coherence length of two waves, a wave with a spectrum or a wave with a Gaussian spectrum; critical frequency; the Doppler shift, blueshift or redshift; thermal Doppler broadening; frequency period relations; the energy of oscillations; natural broadening; the resonance of a string under tension; wave propagation in strings; the phase speed of a water wave; wavelength; reduced or spectroscopic wavenumbers; and wave speed.
