Doppler Effect Lab

Move the source and watch the wavefronts bunch ahead of it and stretch behind it.

Speed of sound v 343 m/s (fixed)

Source speed v_s100 m/s

Approaching the sonic limit — wavefronts ahead are piling up almost on top of each other.

Emitted frequency f400 Hz

Frequency ahead– Hz

Frequency behind– Hz

Wavelength ahead– m

Wavelength behind– m