Kinetic exteriors were enthralling; precision bearings, well balanced arms

https://www.scribd.com/document/1058700139/Dormer-Design-for-100-Years-Copper-That-Doesn-t-Lie-to-Engineers-or-Owners-187935

Kinetic facades were fascinating; accuracy bearings, well balanced arms, and lightweight metals let panels react to wind and sun, combining engineering with ecological art.