Mixing of a cold droplet impacting on a hot film —

A composite video of visible and invisible Infrared showing that when a droplet at 19.7°C impacts on a hot film at 45.8°C, the droplet liquid only partially mixes. The infrared provides us with important information about the mixing processes needed to understand this phenomenon.

https://downloads.sms.cam.ac.uk/2718190/2718198.mp4