The collision of droplets with a water surface is being actively developed in the interests of many applied problems—transfer of matter through the ocean-atmosphere boundary,underwater acoustic noise of the marine environment,measurement of precipitation intensity,various technologies,and much more.One of the research priorities is acoustic radiation,in particular,shock sound arising at the moment a drop contacts the surface.The impact of the drop is preceded by processes that affect the shape of the drop,because of which it noticeably deviates from the spherical one.As a result,the final(contact)velocity changes–one of the most important parameters of collision.The study of the listed factors is carried out in this work by means of broadband acoustic measurements and high-speed video recording.
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