The term synchronization as used here describes how two or more coupled nonlinear oscillators adjust their (initially different) natural rhythms to a common frequency and constant relative phase. (watertechbyrie.com)
«We can tune the intensity and the relative phase of three different frequencies,» says Stefan Haessler, «this brings us close to the «perfect wave», which can be calculated in numerical simulations.» (sciencedaily.com)
We demonstrated an experimental technique based on stimulated light scattering to continuously sample the relative phase of two spatially separated Bose - Einstein condensates of atoms. (science.sciencemag.org)