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Published on 18 Dec 2007
Synchronisation of 5 coupled metronomes done in Lancaster University, Physics Dep (http://www.youtube.com/user/lancaster...), Nonlinear dynamics and medical physics group. Emails related to this video can be sent to: a.bahraminasabNOSPAM at gmail dot com.
Some explanation by 'shoonya' which I think is pretty good:
Here you go: metronomes (or "pendula") when on table, oscillate with random phases, since that is how they started and they are "uncoupled" (no energy/information flows from one to other so they do not "know" each other.) When they are all together on the cans, notice that the cans themselves oscillate little, providing coupling/information crossover. which forces "synchronization" in periodic systems (discovered by Huygens in 17th century). A useful book: "Synchronization: A Universal Concept in Nonlinear Sciences " by Arkady Pikovsky, Michael Rosenblum and Jurgen Kurths.