Metronomes started randomly synchronize after a short period of time as they influence each other through the side-to-side motion of their shared base, a mechanical realization of the mathematical "Kuramoto model" discovered in 1975 https://t.co/i4t781VaQz https://video.twimg.com/ext_tw_video/1338773969382428672/pu/vid/1280x720/TgQObqE3yJ1Ors22.mp4