Ευχές

. . Note for the animated GIF: The Kelvin-Helmholtz instability occurs when velocity shear is present in a single fluid or when two different fluids have a velocity difference across their interface. The Kelvin-Helmholtz instability is commonly found in nature between cloud layers. As shown in this numerical simulation, the instability produces a fractal-like pattern of eddies turning over on themselves.  (Source: Fuck Yeah Fluid Dynamics).

.  Merry Christmas and all the best in the New Year! Καλές γιορτές και ένα χαρούμενο, γεμάτο υγείο και δημιουργία καινούργιο χρόνο!