यूनानी गणितज्ञ और खगोलविद जिन्होंने पृथ्वी की परिधि और चंद्रमा और सूर्य (276-19 4 ईसा पूर्व (276-194 ईसा पूर्व) की दूरी का अनुमान लगाया

Noun:

इरेटोस्थेनेज,

eratosthenes's Usage Examples:

Eratosthenes (276-196 B.C.) used most probably a solstitial armilla for measuring the obliquity of the ecliptic. Hipparchus (160-125 B.C.) probably used an armillary sphere of four rings.

Lessing' in 1773, which purports to have been sent by Archimedes to the mathematicians at Alexandria in a letter to Eratosthenes.

is ascribed to Eratosthenes, a contemporary of Justinian, while reference is frequently made to the views of Munatius, who lived in the time of Herodes Atticus, and Amarantus, a contemporary of Galen.

Eratosthenes (c. 200 B.C.), however, gives a picturesque origin to the problem.

The founder of the mathematical school was the celebrated Euclid (Eucleides); among its scholars were Archimedes; Apollonius of Perga, author of a treatise on Conic Sections; Eratosthenes, to whom we owe the first measurement of the earth; and Hipparchus, the founder of the epicyclical theory of the heavens, afterwards called the Ptolemaic system, from its most famous expositor, Claudius Ptolemaeus.

It was upon a map based upon such a source that Eratosthenes (276-196 B.C.) measured the distance between Syene and Alexandria which he required for his determination of the length of a degree.

Ptolemy Euergetes (247-222 B.C.) rendered the greatest service to geography by the protection and encouragement of Eratosthenes, whose labours gave the first ap proximate knowledge of the true size of the spherical The .

His geography was based more immediately on the work of his predecessor, Marinus of Tyre, and on that of Hipparchus, the follower and critic of Eratosthenes.

Varro was also the author of a Cosmographia, or Chorographia, a geographical poem imitated from the Greek of Eratosthenes or of Alexander of Ephesus, surnamed Lychnus; and of an Ephemeris, a hexameter poem on weather-signs after Aratus, from which Virgil has borrowed.

24) followed Eratosthenes rather than Aristotle, but with sympathies which went out more to the human interests than the mathematical basis of geography.

eratosthenes's Meaning':

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