Greeks - Earth Shape
Storyboard-Text
- Around 500 B.C.
- I think the Earth is round, not flat.
- Yes, I think so, too.
- Around 500 B.C.
- Pythagoras
- Earth is a spherical planet.
- My pupils and I proposed this idea.
- In 500 to 430 B.C.
- Anaxagoras
- The shadow reflected is circular.
- I observed the shadows casted by the Earth on the Moon during a lunar eclipse.
- And this supported Pythagoras' proposal.
- Around 340 B.C.
- As well as the shape of the Moon and the Sun.
- I listed here the arguments regarding the spherical Earth.
- Aristotle
- This list also includes the position of the North Star.
- Around 240 B.C.
- Eratosthenes
- I determined the size of the Earth by applying geometric principles.
- I observed the noonday sun in Alexandria and Syene, which are opposite of each other.
- It was me who gave the most accurate size of the Earth during our time.
- Around 240 B.C.
- Eratosthenes
- I measured the shadow casted by the vertical stick placed in these places.
- Then there is a difference between these shadows. Hence, I conclude that the Earth is curved.
- THE END
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