Assertion: negative doppler shift | /r/HasProperty | cos 180º = -1).for motion
Facets:
Source sentences:
text: Thus the full Doppler equation for reflected ultrasound is:In all cases it is evident that velocities at right angle to the ultrasound beam will result in no Doppler shift (Cos 90º = 0), and if the reflector moves away from the ultrasound source, there is a negative Doppler shift (cos 180º = -1).For motion measured in the same direction as the sound propagation.