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Synesius
Synesius of Cyrene (; ; c. 373 – c. 414) was a Greek bishop of Ptolemais in ancient Libya, a part of the Western Pentapolis of Cyrenaica after 410. He was born of wealthy parents at Balagrae (now Bayda, Libya) near Cyrene between 370 and 375. Life While still a youth (in 393), he went with his brother Euoptius to Alexandria, where he became an enthusiastic Neoplatonist and disciple of Hypatia. Between 395 and 399, he spent some time in Athens. In 398 he was chosen as an envoy to the imperial court in Constantinople by Cyrene and the whole Pentapolis. He went to the capital on the occasion of the delivery of the ''aurum coronarium'' and his task was to obtain tax remissions for his country. In Constantinople he obtained the patronage of the powerful praetorian prefect Aurelianus. Synesius composed and addressed to Emperor Arcadius a speech entitled ''De regno'', full of topical advice as to the studies of a wise ruler, but also containing a bold statement that the emper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypatia Of Alexandria
Hypatia (born 350–370 – March 415 AD) was a Neoplatonist philosopher, astronomer, and mathematician who lived in Alexandria, Egypt: at that time a major city of the Eastern Roman Empire. In Alexandria, Hypatia was a prominent thinker who taught subjects including philosophy and astronomy, and in her lifetime was renowned as a great teacher and a wise counselor. Not the only fourth century Alexandrian female mathematician, Hypatia was preceded by Pandrosion. However, Hypatia is the first female mathematician whose life is reasonably well recorded. She wrote a commentary on Diophantus's thirteen-volume ''Arithmetica'', which may survive in part, having been interpolated into Diophantus's original text, and another commentary on Apollonius of Perga's treatise on conic sections, which has not survived. Many modern scholars also believe that Hypatia may have edited the surviving text of Ptolemy's ''Almagest'', based on the title of her father Theon's commentary on Book III ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ptolemais, Cyrenaica
Ptolemais (Greek: Πτολεμαΐς) was one of the five cities that formed the Pentapolis of Cyrenaica, the others being Cyrene, Euesperides (later known as Berenice, now Benghazi), Tauchira/Teuchira (later Arsinoe, and now Tocra), and Apollonia (now Susa). Its ruins are at a small village in modern Libya called Tolmeita (''Arabic'' طلميتة), after the ancient name.Jane Soames Nickerson (Biblo & Tannen Publishers 1968 ), p. 20 History 
The city was founded by and named after one of the rulers of the
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Hydrometer
A hydrometer or lactometer is an instrument used for measuring density or relative density of liquids based on the concept of buoyancy. They are typically Calibration, calibrated and Graduation (instrument), graduated with one or more scales such as specific gravity. A hydrometer usually consists of a sealed hollow glass tube with a wider bottom portion for buoyancy, a ballast such as lead or Mercury (element), mercury for stability, and a narrow stem with graduations for measuring. The liquid to test is poured into a tall container, often a graduated cylinder, and the hydrometer is gently lowered into the liquid until it floats freely. The point at which the surface of the liquid touches the stem of the hydrometer correlates to relative density. Hydrometers can contain any number of scales along the stem corresponding to properties correlating to the density. Hydrometers are calibrated for different uses, such as a lactometer for measuring the density (creaminess) of milk, a sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyrene, Libya
Cyrene, also sometimes anglicization of names, anglicized as Kyrene, was an ancient Greeks, ancient Greek Greek colonization, colony and ancient Romans, Roman Cities of the Roman Empire, city near present-day Shahhat in northeastern Libya in North Africa. It was part of the Pentapolis (North Africa), Pentapolis, an important group of five cities in the region, and gave the area its classical and early modern name Cyrenaica. Cyrene lies on a ridge of the Jebel Akhdar (Libya), Jebel Akhdar uplands. The archaeological remains cover several hectares and include several monumental temples, stoas, theatres, bathhouses, churches, and palatial residences. The city is surrounded by the Necropolis of Cyrene. Since 1982, it has been a UNESCO World Heritage Site. The city's port was Apollonia, Cyrenaica, Apollonia (Marsa Sousa), located about to the north. The city was attributed to Apollo and the legendary etymology, etymon Cyrene (mythology), Cyrene by the Greeks themselves but it was p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gainas
Gainas (Greek: Γαϊνάς) was a Gothic leader who served the Eastern Roman Empire as ''magister militum'' during the reigns of Theodosius I and Arcadius. He played an important role in the events in the eastern part of the empire by the end of the 4th century. Career Gainas began his military career as a common foot-soldier, but later commanded the barbarian contingent of Theodosius' army against the usurper Eugenius in 394. Under the command of Gainas, a man of "no lineage", was the young Alaric of the Balti dynasty. In 395, during the Revolt of Alaric I, Stilicho sent him with his troops, under the cover of strengthening the armies of the East, to depose the prefect Rufinus, who was hostile to Stilicho. Gainas murdered Rufinus, but the eunuch Eutropius, who was likewise Stilicho's enemy, gained power. Gainas remained mostly unrewarded by the influential eunuch, which increased his resentment. In 399 he finally rose in stature by replacing ''magister militum'' Leo. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goths
The Goths were a Germanic people who played a major role in the fall of the Western Roman Empire and the emergence of medieval Europe. They were first reported by Graeco-Roman authors in the 3rd century AD, living north of the Danube in what is now Ukraine, Moldova, and Romania. From here they conducted raids into Roman territory, and large numbers of them joined the Roman military. These early Goths lived in the regions where archaeologists find the Chernyakhov culture, which flourished throughout this region during the 3rd and 4th centuries. In the late 4th century, the lands of the Goths in present-day Ukraine were overwhelmed by a significant westward movement of Alans and Huns from the east. Large numbers of Goths subsequently concentrated upon the Roman border at the Lower Danube, seeking refuge inside the Roman Empire. After they entered the Empire, violence broke out, and Goth-led forces inflicted a devastating defeat upon the Romans at the Battle of Adrianople in 378. Ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudo-Democritus
Pseudo-Democritus is the name used by scholars for the anonymous authors of a number of Greek writings that were falsely attributed to the pre-Socratic philosopher Democritus ( 460–370 BC). Several of these writings, most notably the lost works ''On Sympathies and Antipathies'' and ''Artificial Substances'' (Greek: ), were probably written by the Pythagorean physician and pharmacologist Bolos of Mendes ( 3rd or 2d century BC). There are also a number of extant Greek alchemical writings attributed to Democritus, whose author has sometimes likewise been identified as Bolos of Mendes, but who is now thought to have been an anonymous author active during the second half of the first century AD, most likely c. 54–68 AD. These writings are some of the oldest alchemical works in existence, and have played an important role in defining alchemy as a discipline. In their original form, they probably consisted of a series of four books on dyeing: two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aurelianus (consul 400)
Aurelianus (Greek: Αύρηλιανός, 393–416) was a prominent politician of the Eastern Roman Empire. He was ''praefectus urbi'' of Constantinople from 393 to 394, Praetorian prefect of the East from 399 to 400, and consul in 400. In 400, Gothic rebels under Gainas forced the emperor Arcadius to give them Aurelianus, and he was exiled; he returned to Constantinople after the defeat of the Goths later that year. He served as Pretorian Prefect to the East a second time from 414 to 416. Biography Aurelianus was the son of the consul of 361, Taurus, and brother of Caesarius; he had a son called Taurus, Consul in 428. Aurelianus would become a well known and major Christian advocate later in life, and erected a church to protomartyr Stephen. Aurelianus was ''praefectus urbi'' of Constantinople between 393 and 394. When the Gothic ''magister militum'' Gainas rose to power at the court of Emperor Arcadius, he had all supporters of his enemy Eutropius removed; he chose ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dio Chrysostom
Dio Chrysostom (; ''Dion Chrysostomos''), Dio of Prusa or Cocceianus Dio (c. 40 – c. 115 AD), was a Greek orator, writer, philosopher and historian of the Roman Empire in the 1st century AD. Eighty of his ''Discourses'' (or ''Orations''; ) are extant, as well as a few letters, a mock essay ''Encomium on Hair'', and a few other fragments. His sobriquet ''Chrysostom'' comes from the Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ... , which literally means "golden-mouthed". Life He was born at Prusa (Bithynia), Prusa (now Bursa), in the Roman province of Bithynia (now part of northwestern Turkey). His father, Pasicrates, seems to have bestowed great care on his son Dio's education. At first he lived in Prusa, where he held important offices, composed speeches and other rheto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caesarius (consul 398)
Flavius Caesarius (Greek: Καισάριος; f''loruit'' 386–403) was a politician of the Eastern Roman Empire, who served under the emperors Theodosius I and Arcadius. Caesarius was ''magister officiorum'' (386-387), praetorian prefect of the East (395-397 and 400–403), and consul in 397. Biography Caesarius was the son of the Consul of 361, Taurus, and the elder brother of Aurelianus, with whom he contended for power. His devotion to his wife is noted by Sozomen. In 386 he is attested as ''magister officiorum''. As such, he was sent by Emperor Theodosius I to Antioch in 387, where the population had revolted against taxation. Caesarius, together with Ellobicus, then ''magister militum per Orientem'', held an inquiry. Caesarius paid particular attention for the situation of the citizens of Antioch and in his report to the Emperor pleaded for clemency for them. The Antiochian orator Libanius thanked him in an oration for this. Despite his merits, Caesarius was not appointe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyrenaica
Cyrenaica ( ) or Kyrenaika (, , after the city of Cyrene), is the eastern region of Libya. Cyrenaica includes all of the eastern part of Libya between the 16th and 25th meridians east, including the Kufra District. The coastal region, also known as ''Pentapolis'' ("Five Cities") in antiquity, was part of the Roman province of Crete and Cyrenaica, later divided into ''Libya Pentapolis'' and ''Libya Sicca''. During the Islamic period, the area came to be known as ''Barqa'', after the city of Barca. Cyrenaica became an Italian colony in 1911. After the 1934 formation of Italian Libya, the Cyrenaica province was designated as one of the three primary provinces of the country. During World War II, it fell under British military and civil administration from 1943 until 1951, and finally in the Kingdom of Libya from 1951 until 1963. The region that used to be Cyrenaica officially until 1963 has formed several shabiyat, the administrative divisions of Libya, since 1995. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astrolabe
An astrolabe (; ; ) is an astronomy, astronomical list of astronomical instruments, instrument dating to ancient times. It serves as a star chart and Model#Physical model, physical model of the visible celestial sphere, half-dome of the sky. Its various functions also make it an elaborate inclinometer and an analog computer, analog calculation device capable of working out several kinds of problems in astronomy. In its simplest form it is a metal disc with a pattern of wires, cutouts, and perforations that allows a user to calculate astronomical positions precisely. It is able to measure the horizontal coordinate system, altitude above the horizon of a celestial body, day or night; it can be used to identify stars or planets, to determine local latitude given local time (and vice versa), to survey, or to triangulation, triangulate. It was used in classical antiquity, the Islamic Golden Age, the European Middle Ages and the Age of Discovery for all these purposes. The astrolabe, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
