**Wave Propagation (Waves)** ============================ .. py:currentmodule:: symplyphysics.waves.wave_propagation **Contents:** .. toctree:: :maxdepth: 4 waves.wave_propagation.group_velocity_from_dispersion_relation waves.wave_propagation.phase_of_traveling_wave waves.wave_propagation.phase_shift_between_two_points waves.wave_propagation.phase_velocity_from_angular_frequency_and_wavenumber waves.wave_propagation.phase_velocity_from_angular_velocity_and_wavevector waves.wave_propagation.wavelength_from_phase_speed_and_period