Greek inventor and mathematician Hero of Alexandria is remembered for his iconic work on geometry, Metrica, which was lost for many years but was then discovered after 1896. His most significant contributions include the Heron’s formula to find the area of a triangle, the Hero engine, and a wind-harnessing machine.
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Hero of Alexandria
(Greek Mathematician and Engineer)
Birthdate: 0010 AD
Birthplace: Alexandria, Egypt
Died: 0070 AD
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Arion
(Poet)

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Birthplace: Greece
Often considered a mythical figure, Arion was a Greek poet and musician from Lesbos, and is considered to be the inventor of the dithyrambic form of poetry. Mythical versions state he was the son of Cyclon, or of Poseidon, and was saved from drowning by dolphins who were mesmerized by his music.
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Ctesibius of Alexandria
(Inventor, Mathematician)

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Birthdate: 0285 BC
Birthplace: Alexandria, Egypt
Died: 0222 BC
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