

ERATOSTENES' EXPERIMENT
On Friday, September 22nd 2023 (the day of the autumn equinox), at astronomical noon at 1:02pm, our student in première will relive Eratosthenes’ historic experiment in the courtyard! Equipped with a gnomon (an astronomical instrument consisting of a vertical rod casting the Sun’s shadow on the ground), they’ll be able to determine the Earth’s circumference…
Reproduction of the Eratosthenes’ experiment all over the world (inside the AEFE-network) Year of Physics 2023-2024



