Eratosthenes de cyrene biography of nancy
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Ancient Thebes - LAST REVIEWED: 19 September 2024
- LAST MODIFIED: 23 June 2021
- DOI: 10.1093/obo/9780195389661-0362
- LAST REVIEWED: 19 September 2024
- LAST MODIFIED: 23 June 2021
- DOI: 10.1093/obo/9780195389661-0362
Aravantinos, Vassilios. 2010. The Archaeological Museum of Thebes. Athens: The John S. Latsis Public Benefit Foundation.
A lavishly illustrated guide to the renovated (and spectacular) local museum, this work walks through the history and remains of Thebes (and Boiotia) chronologically and succinctly. It covers prehistory through the Byzantine period (as well as a discussion of myth) in fifteen sections. With both Greek and English editions, the book is available in a free online version via the John S. Latsis Public Benefit Foundation.
Archaeological Museum of Thebes.
A very useful online source available in both Greek and English, this site gives illustrated overviews of the many sites, periods, and finds pertaining to Thebes throughout time.
Bernardini, Paolo Angeli, ed. 2000. Presenza e funzione della città di Tebe nella cultura Greca. Pisa, Italy: Istituti Editoriali e Poligrafici Internazionali.
The publication of a 1997 conference, this work contains a diverse series of papers demonstrating the wide range of Theban studies and includes chapters on the archaeology of the 1990s, an
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Eratosthenes, or rather Eratosthenes of Cyrene (275-194BC), was an ancient Greek scientific writer, mathematician, astronomer and poet (basically a polymath). Born in Cyrene (modern Libya), he was educated at Alexandria and Athens, eventually becoming entrusted with the care of the library at Alexandria. Circa 200BC he developed an algorithm for finding all prime numbers up to a specified integer known as the “Sieve of Eratosthenes.” Myth suggests he inscribed the series of odd numbers on parchment, and then cutting out the composite numbers, the parchment with all its holes resembled a sieve, hence the reason why the algorithm is named EratosthenesSieve. However Eratosthenes also invented the Julian calendar, and calculated the circumference of the Earth.
Eratosthenes surmised that in Aswan (Syene) on June 21, the sun would be directly overhead and cast no shadow. At the same moment, the sun would cast shadows in Alexandria, about 600 miles north of Aswan. So at noon on June 21, 230BC, Eratosthenes measured the height of a pole, and the length of its shadow in Alexandria. He found that angle ∠1 measured about 7.2°. Based on the idea that the sun’s rays are parallel, and that “alternate interior angles of parallel lines are congruent”, then ∠1 ≅