And who can explain the scientific principle illustrated here?
The Doppler Effect is the shift in frequency and wavelength of waves which results from a source moving with respect to the medium, a receiver moving with respect to the medium, or even a moving medium.
The perceived frequency (f ´) is related to the actual frequency (f0) and the relative speeds of the source (vs), observer (vo), and the speed (v) of waves in the medium by
For any of y’all who missed Bill Nye when he talked about this shit, This is a representation of the Doppler effect. AKA, the reason a passing car makes that odd change in sound when it passes you.

