title: Huygens synchronization of two clocks.
abstract: The synchronization of two pendulum clocks hanging from a wall was first observed by Huygens during the XVII century. This type of synchronization is observed in other areas, and is fundamentally different from the problem of two clocks hanging from a moveable base. We present a model explaining the phase opposition synchronization of two pendulum clocks in those conditions. The predicted behaviour is observed experimentally, validating the model.
authors.affiliation: Center of Mathematical Analysis Geometry and Dynamical Systems, Department of Mathematics, Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal.
authors.forename: Henrique M
authors.initials: HM
authors.lastname: Oliveira
authors.affiliation: INESC-MN and IN, Av. Alves Redol 9, 1000-029 Lisboa, Portugal and Department of Physics, Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal.
authors.forename: Luís V
authors.initials: LV
authors.lastname: Melo