Fluid mechanics guys are nuts, I can’t believe people can write the mathematical equations that govern stuff like this, it’s easily the most impressive and understated area of physics imo.

As a consequence of the incompressibility of the flow and Darcy’s law, the pressure fields must be harmonic…

Every time I start to feel complacent with my ignorance of complex analysis, another harmonic function pops out of the woodwork.

“An example of viscous fingering in a Hele-Shaw cell.”

haha

Wow. That’s why liquid glue looks like this when you remove the things you glue. Interesting.