**Doppler Effect (Electromagnetic Waves)** ========================================== .. py:currentmodule:: symplyphysics.electromagnetic_waves.doppler_effect **Contents:** .. toctree:: :maxdepth: 4 electromagnetic_waves.doppler_effect.frequency_shift_from_velocity_and_angle electromagnetic_waves.doppler_effect.longitudinal_frequency_shift_from_absolute_velocities electromagnetic_waves.doppler_effect.longitudinal_frequency_shift_from_velocity