Eratosthenes experiment

Author: Eric VAYSSIE

Students from 30 schools measured the circumference of the Earth, reproducing Eratosthenes experiment during the lockdown drill.

  • An historical experiment
  • A hands on activity
  • A pedagogical project
  • Home activities during the lockdown drill

An historical experiment

It was in 205 B.C., the Greek astronomer Eratosthenes, at the time Director of the Great Library of Alexandria in Egypt, proposed a purely geometrical method to measure the circumference of the Earth. He used the observation of shadows made at two different places, Alexandria and Syene (now Aswan).

Historical measure
Continue reading