Notes on ancient Greeks' struggles with mixture separation and some modern applications.
References:
1. "Percy Jackson's Greek Heroes" by Rick Riordan.
2. Osmotic power:
https://www.bbc.com/future/article/20150610-blue-energy-how-mixing-water-can-create-electricity
https://en.wikipedia.org/wiki/Osmotic_power
3. Capacitive mixing:
Hatzell et al., Energy Environ. Sci. 7 (2014) 1159
