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There are special days, special places , when and where the sun casts no shadow at noon. This was the first Eratosthenes experiment between Alexandria and Aswan, 2200 years ago.
There are special days, special places , when and where the sun casts no shadow at noon. This was the first Eratosthenes experiment between Alexandria and Aswan, 2200 years ago.
May newsletter with results by continent and countries, With table of results, photo, and geometric figures
4 continents, 13 countries, 30 schools, 70 measurements
Amazing videoconference for the Eratosthenes workshop of Open Mathematics in Ben Arous (Tunisia). All the measures were made just before the videoconference and we had a live calculation of the circumference of the Earth with partners from Europe, Africa, Asia and America
8 schools from Greece, Italy, France and India observed the Mercury transit
April newsletter with results by continent and countries, With table of results, photo, and geometric figures
3 continents, 9 countries, 27 schools, 65 measurements
20 schools from Asia, Africa, Europe and South America participated to the videoconference
March newsletter with results by continent and countries,

With table of results, photo, and geometric figures

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