Search results
Results from the WOW.Com Content Network
Aristarchus of Samos (/ ˌ æ r ə ˈ s t ɑːr k ə s /; Greek: Ἀρίσταρχος ὁ Σάμιος, Aristarkhos ho Samios; c. 310 – c. 230 BC) was an ancient Greek astronomer and mathematician who presented the first known heliocentric model that placed the Sun at the center of the universe, with the Earth revolving around the Sun once a year and rotating about its axis once a day.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
Known for. Sieve of Eratosthenes. Founder of Geography. Eratosthenes of Cyrene (/ ɛrəˈtɒsθəniːz /; Greek: Ἐρατοσθένης [eratostʰénɛːs]; c. 276 BC – c. 195/194 BC) was an Ancient Greek polymath: a mathematician, geographer, poet, astronomer, and music theorist. He was a man of learning, becoming the chief librarian at the ...
Archimedes. Archimedes of Syracuse[a] (/ ˌɑːrkɪˈmiːdiːz / AR-kim-EE-deez; [2] c. 287 – c. 212 BC) was an Ancient Greek mathematician, physicist, engineer, astronomer, and inventor from the ancient city of Syracuse in Sicily. [3] Although few details of his life are known, he is regarded as one of the leading scientists in classical ...
The Antikythera mechanism was an analog computer from 150–100 BCE designed to calculate the positions of astronomical objects. Ancient Greek astronomy is the astronomy written in the Greek language during classical antiquity. Greek astronomy is understood to include the Ancient Greek, Hellenistic, Greco-Roman, and late antique eras.
Geographer. Hipparchus (/ hɪˈpɑːrkəs /; Greek: Ἵππαρχος, Hípparkhos; c. 190 – c. 120 BC) was a Greek astronomer, geographer, and mathematician. He is considered the founder of trigonometry, [1] but is most famous for his incidental discovery of the precession of the equinoxes. [2] Hipparchus was born in Nicaea, Bithynia, and ...
Posidonius, nicknamed "the Athlete" (Ἀθλητής), [8][9] was born around 135 BC. [10] He was born into a Greek family in Apamea, [11][12][13] a Hellenistic city on the river Orontes in northern Syria. [14] As historian Philip Freeman puts it: "Posidonius was Greek to the core". [12] Posidonius expressed no love for his native city, Apamea ...
The observations by Timocharis are among the oldest Greek records that can be assigned a specific date. They are only exceeded by records of the summer solstice of 432 BC, as noted by Euctemon and Meton. [ 5] Timocharis worked with Aristillus in an astronomical observatory that was most likely part of the Library of Alexandria.