Historical figure

Eratosthenes

276 BC – 194 BC

Geographer and head of the Library of Alexandria Hellenistic Greece Greece

Greek mathematician, astronomer, and geographer. As head of the library he calculated Earth's circumference by comparing shadow angles in Syene and Alexandria.

Sources on this figure

References taken from published articles that cover this person.

Journal
Alexandria: Library of Dreams Roger S. Bagnall · Proceedings of the American Philosophical Society 146(4) · 2002 Discussed in The Library of Alexandria and the Ambition to Gather All World Knowledge
Book
The Library of Alexandria: Centre of Learning in the Ancient World Roy MacLeod (ed.) · I.B. Tauris · 2000 Discussed in The Library of Alexandria and the Ambition to Gather All World Knowledge
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The Life and Fate of the Ancient Library of Alexandria Mostafa El-Abbadi · UNESCO · 1990 Discussed in The Library of Alexandria and the Ambition to Gather All World Knowledge
Book
The Vanished Library: A Wonder of the Ancient World Luciano Canfora · University of California Press · 1990 Discussed in The Library of Alexandria and the Ambition to Gather All World Knowledge

Articles covering Eratosthenes

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Ancient History Egypt

The Library of Alexandria and the Ambition to Gather All World Knowledge

Alexandria was founded by Alexander the Great in 331 BC on the Mediterranean coast of Egypt. After Alexander's death, his general Ptolemy took over Egypt and began…

sekitar 285 SM - 642 M 3 min read 35 Nov 8, 2026

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