I am so happy to have found this forum. I am trying to understand a concept about frequency entrainment. I remember reading many times that two different, but similar vibrating bodies can lock into a constructive interference regarding their frequencies, however I thought that their amplitudes were completely independant of that. However recently, a self proclaimed physics affcianado told me that when two similar vibrating bodies come into contact, the higher amplitude vibrating body will cause the more “quiet” vibrating body to take on its amplitude. In other words, the louder vibration wins. Is this correct? If so, is there a name for this phenom?