Experiment causes water droplets to float on top of a pool

The video above contains images derived from a fluid dynamics survey. More specifically, he presents a feat performed by physicists Pablo Cabrera-Garcia and Roberto Zenit of the Universidad Nacional Autónoma de México - who used a high-speed camera, a pool, water, and a speaker to perform a very interesting experiment.

Normally, as we drop a drop of water into a container containing the same liquid, the drop will hit the surface, make a small leap and, when dropped again, will mix with the rest of the water.

However, if we put the container (in the case of the above experiment, a pool) in contact with a speaker - which causes the liquid to vibrate constantly - the droplet will not mix with the rest of the water. In this case, it will jump at first and then levitate on top of the liquid surface.

And this is the procedure that the video produced by physicists Cabrera-Garcia and Zenit presents. At the beginning of the recording, the natural action of the water droplet - which collides with the surface of the liquid, bounces and “dilutes” is shown. However, the curious reaction of the drops in contact with a vibrating surface is soon presented. It is worth checking!

Source: Physics Central