earth survey

More than 2,200 years ago, an ancient Greek scholar calculated the circumference of the Earth using a stick and the sun |

By WEB DESK TEAM

Comments Off on More than 2,200 years ago, an ancient Greek scholar calculated the circumference of the Earth using a stick and the sun |

July 20, 2026

2 Min Read

More than 2,200 years before satellites, GPS and space missions revealed the Earth’s true size, an ancient Greek scholar calculated the Earth’s circumference using only a stick, sunlight and basic geometry. Around 240 BC, Eratosthenes, chief…