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
