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Saturday, September 19, 2015

Eratosthenes experiment

Source: wikipedia
On Wednesday, at local noon, each school in different countries will conduct the Eratosthenes experiment.

Eratosthenes  of  Cyrene (276 aC – 195/194 aC) was a Greek mathematician, geographer, poet, astronomer, and music theorist. He was a man of learning, becoming the chief librarian at the Library of Alexandria. He invented the discipline of Geography, including the terminology used today. He is best known for being the first person to calculate the circumference of the Earth, which he did by applying a measuring system using stadia, a standard unit of measure during that time period. His calculation was remarkably accurate. He was also the first to calculate the tilt of the Earth's axis (again with remarkable accuracy).

To conduct the experiment and exchange data with other schools please go to this website:

You can also participate in the photo contest.

Be part of the Galileo Teacher Program (connecting teachers in all countries).

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