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Wavy Water Entry

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On the right: a black and white image showing the cavity left when a hydrophobic sphere enters the water. The cavity has broken into two sections, one that is conical and reaches back up to the surface and another that is tear-dropped shaped and stretches behind the black sphere. Text reads, "Air is entrained by the sphere and a cavity is formed. The cavity closes below the surface, creating a deep seal."

Five black and white images of spheres entering the water from increasing heights. Text reads, "Increasing the drop height abruptly stops air entrainment and we transition from deep to surface seal."

Black and white image of a crown splash nearly sealed at the surface. Text reads, "Wavy water entry: it's just a phase" along with acknowledgements of funding and music.

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