What Archimedes Did Two Thousand Years Before Newton
He used balance points to discover the volumes of curved solids, then proved them with strict geometry. The Greeks called it forbidden. He called it the Method.
Read the story →A century
3rd century BC
3 stories from this century.
The Librarian Who Measured the Earth With a Shadow
Around 240 BC the chief librarian at Alexandria measured the planet's circumference using two shadows and a piece of arithmetic. He was off by about two percent.
Read the story →The Lighthouse That Outlived Its Own Civilization
For sixteen hundred years the Pharos of Alexandria threw light over a sea. Three earthquakes finished what nothing else could.
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