Eratosthenes Festivity 2011
21 June 2011 - 21 June 2011

Eratosthenes festivity is an annual event organized by the the Planetarium Science Center (PSC)  on 21 June every year since 2003; the day of Summer Solstice in Alexandria and Aswan. Eratosthenes, the Greek scientist and the third librarian of the Ancient Library of Alexandria, was the first scientist who measure the circumference of the Erath before 2000 years ago in these two cities.


Eratosthenes Festivity 2011 started with a lecture entitled “Eratosthenes the Man and the History of Measuring the Circumference of the Earth” given by Dr. Shaymaa El Sherif, Head of Unit, Francophone Library department, Bibliotheca Alexandrina, and Dr. Omar Fikry, Head, Planetarium Section, Bibliotheca Alexandrina. The lecture explained the history of Eratosthenes and how he measured the circumference of the Earth.

After that, around 450 children in Alexandria applicant Eratosthenes method at noon at the Bibliotheca Alexandrina Plaza followed by a videoconference between Alexandria, Aswan, American University in Cairo, Spain and France to compare the measurement results.

Other partner was Greek schools in Cairo and Greece who participated in this event. In Aswan, the program included a lecture entitled “the Sun” given by Mr. Ayman Ibrahim, a senior specialist Astronomy Center Planetarium and astronomy workshop and a contest.


Greek School in Cairo

Greek School in Cairo

Greek School in Cairo

France Measurment

To view France measurments, please click here
To view Greek School in Egypt measurments, please click here
To view Greece measurments_ High School of Drama, please click here 
To view Greece measurments, please click here

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