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Here Eratosthenes described his famous story of the well in Syene, wherein at noon each summer solstice, the Sun's rays shone straight down into the city-center well. [22] This book would now be considered a text on mathematical geography. His third book of the Geography contained political geography. He cited countries and used parallel lines ...
Sieve of Eratosthenes: algorithm steps for primes below 121 (including optimization of starting from prime's square). In mathematics, the sieve of Eratosthenes is an ancient algorithm for finding all prime numbers up to any given limit.
1883 reconstruction of Eratosthenes' map [9] Eratosthenes (276–194 BCE) drew an improved world map, incorporating information from the campaigns of Alexander the Great and his successors. Asia became wider, reflecting the new understanding of the actual size of the continent. Eratosthenes was also the first geographer to incorporate parallels ...
On the Murder of Eratosthenes" is a speech by Lysias, one of the "Canon of Ten" Attic orators. The speech is the first in the transmitted Lysianic corpus and is therefore also known as Lysias 1 . The speech was given by a certain Euphiletos, defending himself against the charge that he murdered Eratosthenes, after he supposedly caught ...
Title page of the 1620 edition of Isaac Casaubon's Geographica, whose 840 page numbers prefixed by "C" are now used as a standard text reference.. The Geographica (Ancient Greek: Γεωγραφικά, Geōgraphiká; Latin: Geographica or Strabonis Rerum Geographicarum Libri XVII, "Strabo's 17 Books on Geographical Topics") or Geography, is an encyclopedia of geographical knowledge, consisting ...
Eratosthenes was the first person to advance geography towards becoming a scientific discipline. [58] Eratosthenes believed that the setting of the Homeric poems was purely imaginary and argued that the purpose of poetry was "to capture the soul", rather than to give a historically accurate account of actual events. [55]
The Method takes the form of a letter from Archimedes to Eratosthenes, [1] the chief librarian at the Library of Alexandria, and contains the first attested explicit use of indivisibles (indivisibles are geometric versions of infinitesimals).
The Catasterismi or Catasterisms (Greek Καταστερισμοί Katasterismoi, "Constellations" or "Placings Among the Stars" [1]) is a lost work by Eratosthenes of Cyrene. It was a comprehensive compendium of astral mythology including origin myths of the stars and constellations.