Doppler Effect: Wave Fronts

Describing the wave fronts of a wave for a moving source. The Doppler effect is a phenomenon experiential whenever the source of waves is moving along with respect to an observer. The Doppler effect can be elaborates as the effect generates through a moving source of waves within that there is an apparent upward shift in frequency for the observer and the source are approaching and an apparent downward shift in frequency while the observer and the source is receding. The Doppler Effect can be observed to occur with all kinds of waves - most notably sound waves, water waves, and light waves.