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Eratosthenes created a whole section devoted to the examination of Homer, and acquired original works of great tragic dramas of Aeschylus, Sophocles and Euripides. [6] Eratosthenes made several important contributions to mathematics and science, and was a friend of Archimedes. Around 255 BC, he invented the armillary sphere.
In more recent developments, geography has become a distinct academic discipline. 'Geography' derives from the Greek γεωγραφία – geographia, [1] literally "Earth-writing", that is, description or writing about the Earth. The first person to use the word geography was Eratosthenes (276–194 BC).
Eratosthenes (c. 276–194 BC) Scymnus (fl. 180s BC) Hipparchus (c. 190–120 BC) Agatharchides (2nd century BC) Posidonius (c. 135–51 BC) Pseudo-Scymnus (c. 90 BC) Diodorus Siculus (c. 90–30 BC) Alexander Polyhistor (1st century BC) Roman Empire period 15th century reconstruction of Ptolemy's map. Periplus of the Erythraean Sea; Strabo (63 ...
The angle between the sunbeam and a gnomon (vertical pole) at Alexandria allowed Eratosthenes to estimate Earth's circumference. Under the assumption that the Sun is very far away, the ancient Greek geographer Eratosthenes performed an experiment using the differences in the observed angle of the Sun from two different locations to calculate ...
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 ...
Eratosthenes's method was actually more complicated, as stated by the same Cleomedes, whose purpose was to present a simplified version of the one described in Eratosthenes's book. The method was based on several surveying trips conducted by professional bematists, whose job was to precisely measure the extent of the territory of Egypt for ...
World leaders have offered their condolences following the death of former US President Jimmy Carter, who passed away Sunday at the age of 100.
Then, Eratosthenes used these earth partitions to reference places on the map. He also divided Earth into five climatic regions which was proposed at least as early as the late sixth or early fifth century BC by Parmenides : a torrid zone across the middle, two frigid zones at extreme north and south, and two temperate bands in between. [ 30 ]