📁 Discoveries
2 Stories
Eureka moments and groundbreaking theorems
👤 Eratosthenes
Measuring the Earth with a Stick and Sand
How Eratosthenes measured Earth's circumference in 240 BC using shadows, geometry, and a stick in t…
👤 Duke of Zhou
How an 8-Foot Pole Built a Capital
Discover how the Duke of Zhou used an 8-foot bamboo pole and sunlight to align the Western Zhou cap…