Freezing water drops

Milton van Dyke award-winning entry at the 2012 Gallery of Fluid Motion! In this video we show how a drop of water freezes into a pointy shape when deposited on a cold surface. The process of solidification can be observed very clearly due to the change in refraction when water turns into ice. The drop remains approximately spherical during most of the process, with a freezing front moving upwards and smoothly following the interface. However, at the final stage of freezing, when the last cap of liquid tur