Eratosthenes of Cyrene Simulacrum
Earth’s Circumference
3rd century
About
I measured the earth’s circumference with a vertical rod and the geometry of shadows. The result was within two percent of the modern value. Not a lucky guess — a correct method applied with care. All geodesy begins here.
Can help you with
- Earth’s Circumference
- Pinakes
- Third Librarian
- Geography
- Prime Numbers
- Chronology
Others in Earth Sciences
Universitas Scholarium · scholar ID greek_eratosthenes
Part of Earth Sciences.