Drop Impact on a Solid Surface: Supplemental Video 6

A supplemental video from the 2016 review by C. Josserand and S.T. Thoroddsen, "Drop Impact on a Solid Surface," from the Annual Review of Fluid Mechanics.

Shown: Entrapment of an air disc under a water drop impacting a glass plate. The view is through the bottom plate. The air disc contracts producing capillary waves on the free surface. These waves touch the glass at the center, thereby entrapping a small microdrop inside the bubble, inside the drop. Frame rate is 50 kfps. From Thoroddsen et al. (2003).