THE FULL COLLECTION
Engineering
2 Things in Engineering. Select a category or move through the pages.
Long Now FoundationThe 10,000-year clock
Inside a West Texas mountain, an immense mechanical clock is being assembled to keep time for 10,000 years. Sunlight corrects its long-term drift, while visitors supply energy for displays and chimes.
University of Oxford Department of PhysicsThe Clarendon Dry PileInstalled at Oxford in 1840, two dry-pile batteries still drive a suspended metal sphere back and forth between a pair of bells at roughly two swings per second.