Authors: Enrique Soto and Roberto Zenit

Centro de Ciencias Aplicadas y Desarrollo Tecnológico and Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México Ciudad Universitaria (México)

This fluid dynamics video is an entry for the Gallery of Fluid Motion for the 66th Annual Meeting of the Fluid Dynamics Division of the American Physical Society. We show the curious behaviour of a light ball interacting with a liquid jet. For certain conditions, a ball can be suspended into a slightly inclined liquid jet. We studied this phenomenon using a high speed camera. The visualizations show that the object can be ‘juggled’ for a variety of flow conditions. A simple calculation showed that the ball remains at a stable position due to a Bernoulli-like effect. The phenomenon is very stable and easy to reproduce.


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