Eratosthenes discovery. The earth is round

Eratosthenes discovery. The earth is round

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Storyboard Description

This is the story of how Eratosthenes figured out that the earth is round

Storyboard Text

  • Hello. I am Eratosthenes  I am a poet, the inventor of prime numbers and I'm a scientist
  • Hmm. Is the Earth really flat?
  • Well there's only one way to find out!
  • Oh look! A well!
  • Wait. Is that the suns reflection? What if I measure the Shadow?
  • Aha! the shadow is a 50th of a circle and if its a 50th of a circle.... Than the distance around the world has to be 50 times the distance from Alexandria all the way back! and that leads to the equation of the measurement of the world which is. 500  X 50 = 25000!
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