Tag Archives: Eratosthenes

Eratosthenes Measures the Earth

How do you measure the circumference of the Earth? It’s not like you can take out a meter stick and lay it end to end hundreds of thousands of times. Today with satellite technology and GPS we can easily complete this task and get an extremely precise answer: 40,075.017 kilometers. But how might a Greek … Continue reading Eratosthenes Measures the Earth Continue reading

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