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Anthemius Of Tralles
Anthemius of Tralles ( grc-gre, Ἀνθέμιος ὁ Τραλλιανός, Medieval Greek: , ''Anthémios o Trallianós''; – 533 558) was a Greek from Tralles who worked as a geometer and architect in Constantinople, the capital of the Byzantine Empire. With Isidore of Miletus, he designed the Hagia Sophia for Justinian I. Life Anthemius was one of the five sons of Stephanus of Tralles, a physician. His brothers were Dioscorus, Alexander, Olympius, and Metrodorus. Dioscorus followed his father's profession in Tralles; Alexander did so in Rome and became one of the most celebrated medical men of his time; Olympius became a noted lawyer; and Metrodorus worked as a grammarian in Constantinople. Anthemius was said to have annoyed his neighbor Zeno in two ways: first, by engineering a miniature earthquake by sending steam through leather tubes he had fixed among the joists and flooring of Zeno's parlor while he was entertaining friends and, second, by sim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anthemius Trallianus – Fragment D'un Ouvrage Grec D'Anthèmius Sur Des Paradoxes De Mècanique, 1777 – BEIC 4780621
Procopius Anthemius (died 11 July 472) was western Roman emperor from 467 to 472. Perhaps the last capable Western Roman Emperor, Anthemius attempted to solve the two primary military challenges facing the remains of the Western Roman Empire: the resurgent Visigoths, under Euric, whose domain straddled the Pyrenees; and the unvanquished Vandals, under Geiseric, in undisputed control of North Africa. Anthemius was killed by Ricimer, his own general of Gothic descent, who contested power with him. Early life Procopius Anthemius belonged to a noble family, the Procopii, which gave several high officers, both civil and military, to the Eastern Roman Empire. His mother Lucina was daughter of the influential Flavius Anthemius, Praetorian prefect of the East (404–415) and Consul in 405, and great-granddaughter of Flavius Philippus, praetorian prefect of the East in 346. His father was Procopius, ''magister militum per Orientem'' from 422 to 424, who was descended from the Procop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lightning
Lightning is a naturally occurring electrostatic discharge during which two electrically charged regions, both in the atmosphere or with one on the ground, temporarily neutralize themselves, causing the instantaneous release of an average of one gigajoule of energy. This discharge may produce a wide range of electromagnetic radiation, from heat created by the rapid movement of electrons, to brilliant flashes of visible light in the form of black-body radiation. Lightning causes thunder, a sound from the shock wave which develops as gases in the vicinity of the discharge experience a sudden increase in pressure. Lightning occurs commonly during thunderstorms as well as other types of energetic weather systems, but volcanic lightning can also occur during volcanic eruptions. The three main kinds of lightning are distinguished by where they occur: either inside a single thundercloud (intra-cloud), between two clouds (cloud-to-cloud), or between a cloud and the ground ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
470s Births
47, 47 or forty-seven may refer to: *47 (number) *47 BC * AD 47 * 1947 *2047 * '47 (brand), an American clothing brand * ''47'' (magazine), an American publication * 47 (song), a song by Sidhu Moose Wala *47, a song by New Found Glory from the album ''Not Without a Fight'' *"Forty Seven", a song by Karma to Burn from the album '' V'', 2011 * +47, the international calling code for Norway *4seven, a television channel *Agent 47, protagonist of the ''Hitman'' video game series *''47'', a young adult novel by Walter Mosley See also * List of highways numbered 47 * Channel 47 (other) * M47 (other), including "Model 47" (M47) * Forty-seven Ronin (other) * A47 (other) A47 may refer to: * Queen's Indian Defense, ''Encyclopaedia of Chess Openings'' code * Focke-Wulf A.47, a meteorological aircraft developed in Germany in 1931 ; roads * A47 road, a road connecting Birmingham and Lowestoft in England * A47 motorway ... * Capital Steez {{number dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anthemius (other)
Anthemius was Western Roman emperor from 467 to 472. Anthemius may also refer to: * Anthemius (praetorian prefect) ( 400–414), Praetorian Prefect of the East and grandfather of the Western Emperor * Anthemius Isidorus, Consul in 436 * Anthemiolus (after 453– 471), son of the Emperor, Roman general * Procopius Anthemius (emperor's son), son of the Emperor and Eastern Roman politician * Anthemius of Cyprus ( 488), archbishop * Anthemius of Tralles Anthemius of Tralles ( grc-gre, Ἀνθέμιος ὁ Τραλλιανός, Medieval Greek: , ''Anthémios o Trallianós''; – 533 558) was a Greek from Tralles who worked as a geometer and architect in Constantinople, the capi ... ( 474–before 558), architect of Hagia Sophia * Anthemius of Novgorod (13th century), a boy who lived in Novgorod and left his notes on the birch bark See also * Anthimus (other) {{hndis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dara (Mesopotamia)
Dara or Daras ( el, Δάρας, syr, ܕܪܐ) was an important East Roman fortress city in northern Mesopotamia on the border with the Sassanid Empire. Because of its great strategic importance, it featured prominently in the Roman-Persian conflicts (in 530, 540, 544, 573, and 604). The former archbishopric remains a multiple Catholic titular see. Today the Turkish village of Oğuz, Mardin Province, occupies its location. History Foundation by Anastasius During the Anastasian War in 502–506, the Roman armies fared poorly against the Sassanid Persians. According to the ''Syriac Chronicle'' of Zacharias of Mytilene, the Roman generals blamed their difficulties on the lack of a strong base in the area, as opposed to the Persians, who held the great city of Nisibis (which until its cession in 363 had served the same purpose for the Romans).Zacharias of Mytilene, ''Syriac Chronicle'', Book VII, Chapter VI Therefore, in 505, while the Persian King Kavadh I was distracted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hagia Sophia Mars 2013
Agia, ayia, aghia, hagia, haghia or AGIA may refer to: *''Agia'', feminine form of ''Agios'', 'saint' Geography * Agia, Cyprus * Agia, Chania, a town in Chania (regional unit), Crete, Greece *Agia, Larissa, Greece *Agia (Meteora), a rock in Thessaly, Greece * Agia, Parga, a town in Parga, Epirus Other uses *Saint Agia Aye (died c. 711) is a Belgian Catholic saint. She has been referred to also as Aia, Aya, Agia, and St. Austregildis. She is sometimes confused with another St. Agia, the mother of the French Saint Loup of Sens. Aye is revered by the Beguines ... (died c. 711), Belgian Catholic saint also known as Aye * Alaska Gasline Inducement Act, Alaskan State law * ''Agia'' (moth), a synonym of the moth genus ''Acasis'' See also * * * * {{disambig, geo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Book Of Optics
The ''Book of Optics'' ( ar, كتاب المناظر, Kitāb al-Manāẓir; la, De Aspectibus or ''Perspectiva''; it, Deli Aspecti) is a seven-volume treatise on optics and other fields of study composed by the medieval Arab scholar Ibn al-Haytham, known in the West as Alhazen or Alhacen (965–c. 1040 AD). The ''Book of Optics'' presented experimentally founded arguments against the widely held extramission theory of vision (as held by Euclid in his ''Optica''), and proposed the modern intromission theory, the now accepted model that vision takes place by light entering the eye.D. C. Lindberg (1976), ''Theories of Vision from al-Kindi to Kepler'', Chicago, Univ. of Chicago Press The book is also noted for its early use of the scientific method, its description of the camera obscura, and its formulation of Alhazen's problem. The book extensively affected the development of optics, physics and mathematics in Europe between the 13th and 17th centuries. Vision theory ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematics In Medieval Islam
Mathematics during the Golden Age of Islam, especially during the 9th and 10th centuries, was built on Greek mathematics (Euclid, Archimedes, Apollonius) and Indian mathematics ( Aryabhata, Brahmagupta). Important progress was made, such as full development of the decimal place-value system to include decimal fractions, the first systematised study of algebra, and advances in geometry and trigonometry. Arabic works played an important role in the transmission of mathematics to Europe during the 10th—12th centuries. Concepts Algebra The study of algebra, the name of which is derived from the Arabic word meaning completion or "reunion of broken parts", flourished during the Islamic golden age. Muhammad ibn Musa al-Khwarizmi, a Persian scholar in the House of Wisdom in Baghdad was the founder of algebra, is along with the Greek mathematician Diophantus, known as the father of algebra. In his book '' The Compendious Book on Calculation by Completion and Balancin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parabola
In mathematics, a parabola is a plane curve which is Reflection symmetry, mirror-symmetrical and is approximately U-shaped. It fits several superficially different Mathematics, mathematical descriptions, which can all be proved to define exactly the same curves. One description of a parabola involves a Point (geometry), point (the Focus (geometry), focus) and a Line (geometry), line (the Directrix (conic section), directrix). The focus does not lie on the directrix. The parabola is the locus (mathematics), locus of points in that plane that are equidistant from both the directrix and the focus. Another description of a parabola is as a conic section, created from the intersection of a right circular conical surface and a plane (geometry), plane Parallel (geometry), parallel to another plane that is tangential to the conical surface. The line perpendicular to the directrix and passing through the focus (that is, the line that splits the parabola through the middle) is called th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Directrix (conic Section)
In mathematics, a conic section, quadratic curve or conic is a curve obtained as the intersection of the surface of a cone with a plane. The three types of conic section are the hyperbola, the parabola, and the ellipse; the circle is a special case of the ellipse, though historically it was sometimes called a fourth type. The ancient Greek mathematicians studied conic sections, culminating around 200 BC with Apollonius of Perga's systematic work on their properties. The conic sections in the Euclidean plane have various distinguishing properties, many of which can be used as alternative definitions. One such property defines a non-circular conic to be the set of those points whose distances to some particular point, called a '' focus'', and some particular line, called a ''directrix'', are in a fixed ratio, called the '' eccentricity''. The type of conic is determined by the value of the eccentricity. In analytic geometry, a conic may be defined as a plane algebraic cu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apollonius Of Perga
Apollonius of Perga ( grc-gre, Ἀπολλώνιος ὁ Περγαῖος, Apollṓnios ho Pergaîos; la, Apollonius Pergaeus; ) was an Ancient Greek geometer and astronomer known for his work on conic sections. Beginning from the contributions of Euclid and Archimedes on the topic, he brought them to the state prior to the invention of analytic geometry. His definitions of the terms ellipse, parabola, and hyperbola are the ones in use today. Gottfried Wilhelm Leibniz stated “He who understands Archimedes and Apollonius will admire less the achievements of the foremost men of later times.” Apollonius worked on numerous other topics, including astronomy. Most of this work has not survived, where exceptions are typically fragments referenced by other authors like Pappus of Alexandria. His hypothesis of eccentric orbits to explain the apparently aberrant motion of the planets, commonly believed until the Middle Ages, was superseded during the Renaissance. The Apollon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ellipse
In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. It generalizes a circle, which is the special type of ellipse in which the two focal points are the same. The elongation of an ellipse is measured by its eccentricity e, a number ranging from e = 0 (the limiting case of a circle) to e = 1 (the limiting case of infinite elongation, no longer an ellipse but a parabola). An ellipse has a simple algebraic solution for its area, but only approximations for its perimeter (also known as circumference), for which integration is required to obtain an exact solution. Analytically, the equation of a standard ellipse centered at the origin with width 2a and height 2b is: : \frac+\frac = 1 . Assuming a \ge b, the foci are (\pm c, 0) for c = \sqrt. The standard parametric equation is: : (x,y) = (a\cos(t),b\sin(t)) \quad \text \quad 0\leq t\leq 2\pi. Ellipses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
