Search results
Results from the WOW.Com Content Network
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.
However, Eratosthenes (c. 276 – c. 194/195 BC) was the first person to calculate the circumference of the Earth. Posidonius ( c. 135 – c. 51 BC ) also measured the diameters and distances of the Sun and the Moon as well as the Earth's diameter; his measurement of the diameter of the Sun was more accurate than Aristarchus', differing from ...
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 ...
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 ...
Furthermore, the fact that Eratosthenes' measure corresponds precisely to 252,000 stadia (according to Pliny) might be intentional, since it is a number that can be divided by all natural numbers from 1 to 10: some historians believe that Eratosthenes changed from the 250,000 value written by Cleomedes to this new value to simplify calculations ...
Eratosthenes calculated the Earth's circumference with great precision. [14] Since the distance from the Atlantic to India was roughly known, this raised the important question of what was in the vast region east of Asia and to the west of Europe. Crates of Mallus proposed that there were in fact four inhabitable land masses, two in each ...
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 ...
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 ...