#drainage

The Indus Valley Civilization had one of the world’s earliest urban sanitation systems over 4,000 years ago. In cities like Harappa and Mohenjo-daro, many homes had bathroom areas and water-washed latrines connected to covered street drains.

We often rely on water draining through beds of grains, whether it's the soil foundation beneath a building or the sand-and-gravel-filter used in water treatment. But how does water move through these tortuous porous passages? (Video and image credit: J. Choi et al.)

“Flooded roof” (2006)

Water gifs from today

tried something new with my color settings :)

Videos are on YT.