Biruni – Guine-Bissau

December 30, 2014
Al-Biruni developed a formula in the 11th century to measure the earth’s circumference
400 × 400

Commemorative stamp issued by Guinea-Bissau marking Al-Biruni's scientific contributions (Image: web.olivet.edu)

Commemorative stamp issued by Guinea-Bissau marking Al-Biruni’s scientific contributions (Image: web.olivet.edu)

Commemorative stamp issued by Guinea-Bissau marking Al-Biruni’s scientific contributions (Image: web.olivet.edu)

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