LAUSR

Abstract According to modern physics, there are three main differences between the Doppler effect in optics and the Doppler effect in acoustics: (i) difference in which relative velocity is more important; (ii) difference in the transverse Doppler effect; (iii) difference in the frequency observed by a stationary observer when the source is moving vs. the frequency observed by a moving observer when the source is stationary. All three of these differences are examined in this paper and, in the end, it will be shown that the Doppler effect is the same for both - optics and acoustics.