Eratosthenes

Speech parts

1. Eratosthenes - Noun

2. Eratosthenes - Proper noun

Meaning

Greek mathematician and astronomer who estimated the circumference of the earth and the distances to the Moon and sun (276-194 BC)

Examples

According to Macrobious, Eratosthenes made the diameter of the Sun to be about 27 times that of the Earth. Source: Internet

Archimedes dedicated his book The Method to Eratosthenes, knowing his love for learning and mathematics. Source: Internet

Eratosthenes, then thirty years old, accepted Ptolemy's invitation and traveled to Alexandria, where he lived for the rest of his life. Source: Internet

As head of the library Eratosthenes tutored the children of Ptolemy, including Ptolemy IV Philopator who became the fourth Ptolemaic pharaoh. Source: Internet

Archimedes was Eratosthenes' friend and he, too, worked on the war instrument with mathematics. Source: Internet

Astronomy main Aristarchus of Samos published work on how to determine the sizes and distances of the Sun and the Moon, and Eratosthenes used this work to figure the size of the Earth. Source: Internet

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