In a previous post I shared a video on mixing and unmixing of fluids. This time I share with you an image I took of my coffee. With some milk fluid dynamics created amazing vortices. Following it is an animation of the time evolution of the vortices.
“Milk vortices” by Astrobob – Own work. Licensed under CC BY-SA 4.0 via Commons.
![[Image] Archimedes' screw](https://elmerehbi.files.wordpress.com/2013/12/450px-img_1729_gemaal_met_schroef_van_archimedes_bij_kinderdijk.jpg?w=360&h=480)
Ibrahim El Merehbi 