Eratosthenes Experiment. Astropalia island. The angle of the shadow on the spotlight.
Calculating the Earth's circumference on top of the roof of the Gymnasium of Astypalaia and the Venetian castle standing in the background. Shadow & light. The Aegean sea & the deep blue sky. Eratosthenes & Astropalia.
A few words about the connection of Astypalaia (Astropalia) with astronomy and Eratosthenes.