Eratosthenes

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Related to Erastothenes: Eratosthenes Sieve

E·ra·tos·the·nes

 (ĕr′ə-tŏs′thə-nēz′) Third century bc.
Greek mathematician, astronomer, and geographer who devised a map of the world, estimated the circumference of the earth and the distance to the moon and the sun, and constructed a method for finding prime numbers.

Eratosthenes

(ˌɛrəˈtɒsθɪˌniːz)
n
(Biography) ?276–?194 bc, Greek mathematician and astronomer, who calculated the circumference of the earth by observing the angle of the sun's rays at different places

Er•a•tos•the•nes

(ˌɛr əˈtɒs θəˌniz)

n.
276?–195? B.C., Greek mathematician and astronomer at Alexandria.

E·ra·tos·the·nes

(ĕr′ə-tŏs′thə-nēz′)
Third century b.c. Greek mathematician and astronomer. He is best known for making an accurate estimate of the circumference of the Earth by measuring the angle of the sun's rays at two different locations at the same time. Eratosthenes also invented a method for listing the prime numbers that are less than any given number.
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Noun1.Eratosthenes - Greek mathematician and astronomer who estimated the circumference of the earth and the distances to the Moon and sun (276-194 BC)
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21) There was no other choice but to portray Socrates' actions by utilizing the standard device, in the diegesis, of a command from on high --such as might have been delivered in the form of an injunction from the laws themselves (a la the approach of Lysias in On the Murder of Erastothenes and Demosthenes in Against Neaira) or from a god (such as Apollo's command in Aeschylus' Oresteia to Orestes to slay Clytemnestra).
Erastothenes was a Hellenistic astronomer who discerned that the Earth was round.
It was in the library's predecessor, when Alexandria was one of the greatest cities on Earth, that Euclides devised his geometry, Archimedes developed his principles and Erastothenes calculated the circumference of the Earth with such astonishing accuracy.