Eudoxus of CnidusEudoxus of Cnidus (ˈjuːdəksəs; Εὔδοξος ὁ Κνίδιος, Eúdoxos ho Knídios; 408-355 BC) was an ancient Greek astronomer, mathematician, scholar, and student of Archytas and Plato. All of his original works are lost, though some fragments are preserved in Hipparchus' commentary on Aratus's poem on astronomy. Sphaerics by Theodosius of Bithynia may be based on a work by Eudoxus. Eudoxus was born and died in Cnidus (also spelled Knidos), which was a city on the southwest coast of Asia Minor.
TriremeA trireme(ˈtraɪriːm ; derived from Latin: trirēmis "with three banks of oars"; cf. Greek triērēs, literally "three-rower") was an ancient vessel and a type of galley that was used by the ancient maritime civilizations of the Mediterranean Sea, especially the Phoenicians, ancient Greeks and Romans. The trireme derives its name from its three rows of oars, manned with one man per oar. The early trireme was a development of the penteconter, an ancient warship with a single row of 25 oars on each side (i.e.
IoniansThe Ionians (aɪˈoʊniənz; Ἴωνες, Íōnes, singular Ἴων, Íōn) were one of the four major tribes that the Greeks considered themselves to be divided into during the ancient period; the other three being the Dorians, Aeolians, and Achaeans. The Ionian dialect was one of the three major linguistic divisions of the Hellenic world, together with the Dorian and Aeolian dialects. When referring to populations, "Ionian" defines several groups in Classical Greece. In its narrowest sense, the term referred to the region of Ionia in Asia Minor.
OvidPublius Ovidius Naso (ˈpuːbliʊs ɔˈwɪdiʊs ˈnaːso; 21 March 43 BC – AD 17/18), known in English as Ovid (ˈɒvɪd ), was a Roman poet who lived during the reign of Augustus. He was a younger contemporary of Virgil and Horace, with whom he is often ranked as one of the three canonical poets of Latin literature. The Imperial scholar Quintilian considered him the last of the Latin love elegists. Although Ovid enjoyed enormous popularity during his lifetime, the emperor Augustus exiled him to Tomis, the capital of the newly-organised province of Moesia, on the Black Sea, where he remained for the last nine or ten years of his life.
Roman provinceThe Roman provinces (Latin: provincia, pl. provinciae) were the administrative regions of Ancient Rome outside Roman Italy that were controlled by the Romans under the Roman Republic and later the Roman Empire. Each province was ruled by a Roman appointed as governor. For centuries it was the largest administrative unit of the foreign possessions of ancient Rome. With the administrative reform initiated by Diocletian, it became a third level administrative subdivision of the Roman Empire, or rather a subdivision of the imperial dioceses (in turn subdivisions of the imperial prefectures).
IoniaIonia (aɪˈoʊniə) was an ancient region on the western coast of Anatolia, to the south of present-day Izmir, Turkey. It consisted of the northernmost territories of the Ionian League of Greek settlements. Never a unified state, it was named after the Ionians who had settled in the region before the Archaic period. Ionia proper comprised a narrow coastal strip from Phocaea in the north near the mouth of the river Hermus (now the Gediz), to Miletus in the south near the mouth of the river Maeander, and included the islands of Chios and Samos.
Darius IIIDarius III (𐎭𐎠𐎼𐎹𐎺𐎢𐏁 ; Δαρεῖος ; c. 380 – 330 BC) was the last Achaemenid King of Kings of Persia, reigning from 336 BC to his death in 330 BC. Contrary to his predecessor Artaxerxes IV Arses, Darius was a distant member of the Achaemenid dynasty. During his early career, he was reportedly an obscure figure among his peers and first rose to prominence during the Cadusian expedition of Artaxerxes III in the 350s BC. As a reward for his bravery, he was given the Satrapy of Armenia.
ScythiansThe Scythians (ˈsɪθiən or ˈsɪðiən) or Scyths (ˈsɪθ, but note Scytho- (ˈsaɪθʊ) in composition) and sometimes also referred to as the Pontic Scythians, were an ancient Eastern Iranic equestrian nomadic people who had migrated during the 9th to 8th centuries BC from Central Asia to the Pontic Steppe in modern-day Ukraine and Southern Russia, where they remained established from the 7th century BC until the 3rd century BC. Skilled in mounted warfare, the Scythians replaced the Agathyrsi and the Cimmerians as the dominant power on the western Eurasian Steppe in the 8th century BC.
ColchisIn classical antiquity and Greco-Roman geography, Colchis ('kɒlkɪs; Κολχίς) was an exonym for the Georgian polity of Egrisi (ეგრისი) located on the eastern coast of the Black Sea, centered in present-day western Georgia. Its population, the Colchians, are generally thought to have been an early Kartvelian-speaking tribe ancestral to contemporary western Georgians, namely Svans and Zans. According to David Marshall Lang: "one of the most important elements in the modern Georgian nation, the Colchians were probably established in the Caucasus by the Middle Bronze Age.
GearA gear is a rotating circular machine part having cut teeth or, in the case of a cogwheel or gearwheel, inserted teeth (called cogs), which mesh with another (compatible) toothed part to transmit (convert) torque and speed. The basic principle behind the operation of gears is analogous to the basic principle of levers. A gear may also be known informally as a cog. Geared devices can change the speed, torque, and direction of a power source.
