Rubbing the rim of one wineglass produces a tone, and induces oscillations on other wineglasses due to their coupling. This simple experiment demonstrates phase locking between coupled oscillators and the relation between the required coupling and the frequency detuning.
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November 01 2009
Coupling between two singing wineglasses
Ana K. R. Musalem;
Tal Arane, Ana K. R. Musalem, Moti Fridman; Coupling between two singing wineglasses. Am. J. Phys. 1 November 2009; 77 (11): 1066–1067. https://doi.org/10.1119/1.3119175
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