📁 Discoveries
87 Stories
Eureka moments and groundbreaking theorems
👤 Yu Xi
How a Bamboo Slip Broke the Static Sky
In 330 AD, astronomer Yu Xi used a bamboo rod and a charcoal line to prove the sky drifts one degre…
👤 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…
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