Definitions for eratosthenesˌɛr əˈtɒs θəˌniz
This page provides all possible meanings and translations of the word eratosthenes
Greek mathematician and astronomer who estimated the circumference of the earth and the distances to the Moon and sun (276-194 BC)
Eratosthenes of Cyrene was a Greek mathematician, geographer, poet, astronomer, and music theorist. He was the first person to use the word "geography" in Greek and he invented the discipline of geography as we understand it. He invented a system of latitude and longitude. He was the first person to calculate the circumference of the earth by using a measuring system using stades, or the length of stadiums during that time period. He was the first to calculate the tilt of the Earth's axis. He may also have accurately calculated the distance from the earth to the sun and invented the leap day. He also created the first map of the world incorporating parallels and meridians within his cartographic depictions based on the available geographical knowledge of the era. In addition, Eratosthenes was the founder of scientific chronology; he endeavoured to fix the dates of the chief literary and political events from the conquest of Troy. According to an entry in the Suda, his contemporaries nicknamed him beta, from the second letter of the Greek alphabet, because he supposedly proved himself to be the second best in the world in almost every field.
The Nuttall Encyclopedia
surnamed the Philologist, a philosopher of Alexandria, born at Cyrene, 276 B.C.; becoming blind and tired of life, he starved himself to death at the age of 80; he ranks high among ancient astronomers; measured the obliquity of the ecliptic, and estimated the size of the earth (276-194 B.C.).
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"eratosthenes." Definitions.net. STANDS4 LLC, 2015. Web. 5 Jul 2015. <http://www.definitions.net/definition/eratosthenes>.