ラス・メドゥラス Las Médulas 水力採鉱 Hydraulic mining

流体機械 Hydroulic machinery 流体力学 Fluid dynamics, Hydrodynamics ヘロン Hero of Alexandria

al-jazari [THE MATERIAL CULTURE OF AL-ANDALUS]

The river stream controled loom


Tinguely


[aqua graffiti]


[Steve Hollinger] YoyTube


[casualprofanity]