The 1.7 mile (2.73 km) tunnel in downtown Seattle will house a double-decker highway
Well there’s two things I never thought I’d mention in the same sentence
“It’s like riding a bicycle in three dimensions” – Richard M. Browning, Daedalus project
Precision spring making at its finest
Marble Mountain consists of 25 modular sections and measures 12′ wide, 8′ deep and 8′ tall with 32 possible paths for 300+ marbles
Do you want black holes? Because this is how you get black holes.
This hand cranked music box uses 2,000 marbles to power a kick drum, bass, vibraphone and more