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Magnesia Well Pump Room Building - Geograph , a fo ...
Magnesia may refer to: Chemistry and geology *Magnesium oxide **Periclase or magnesia, a natural mineral of magnesium oxide *Magnesian limestone (other) *Magnesium *Milk of magnesia, a suspension of magnesium hydroxide Geography *Magnesia (hypothetical city), a future colony of Knossos, imagined in Plato's ''Laws'' *Magnesia (regional unit), the southeastern area of Thessaly in central Greece *Ancient Magnesia, a historical region of Greece with borders differing from the modern regional unit *Magnesia ad Sipylum, a city of Lydia, now Manisa in Turkey **Battle of Magnesia, 190 BC, the concluding battle of the Roman–Seleucid War *Magnesia on the Maeander, an ancient Greek city in Anatolia *Magnesia Prefecture Magnesia Prefecture () was one of the prefectures of Greece. Its capital was Volos. It was established in 1899 from the Larissa Prefecture. The prefecture was disbanded on 1 January 2011 by the Kallikratis programme, and split into the regional ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnesium Oxide
Magnesium oxide (MgO), or magnesia, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of magnesium (see also oxide). It has an empirical formula of MgO and consists of a lattice of Mg2+ ions and O2− ions held together by ionic bonding. Magnesium hydroxide forms in the presence of water (MgO + H2O → Mg(OH)2), but it can be reversed by heating it to remove moisture. Magnesium oxide was historically known as magnesia alba (literally, the white mineral from Magnesia), to differentiate it from '' magnesia nigra'', a black mineral containing what is now known as manganese. Related oxides While "magnesium oxide" normally refers to MgO, the compound magnesium peroxide MgO2 is also known. According to evolutionary crystal structure prediction, MgO2 is thermodynamically stable at pressures above 116 GPa (gigapascals), and a semiconducting suboxide Mg3O2 is thermodynamically stable above 500 GPa. Because of its stability, MgO is used as a mod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Periclase
Periclase is a magnesium mineral that occurs naturally in contact metamorphic rocks and is a major component of most basic refractory bricks. It is a cubic form of magnesium oxide ( Mg O). In nature it usually forms a solid solution with wüstite (FeO) and is then referred to as ferropericlase or magnesiowüstite. It was first described in 1840 and named from the Greek περικλάω (to break around) in allusion to its cleavage. The type locality is Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy. The old term for the mineral is ''magnesia''. Stones from the Magnesia region in ancient Anatolia contained both magnesium oxide and hydrated magnesium carbonate as well as iron oxides (such as magnetite). Thus these stones, called ''Stones from Magnesia'' in antiquity, with their unusual magnetic properties were the reason the terms ''magnet'' and ''magnetism'' were coined. Periclase is usually found in marble produced by metamorphism of dolomitic lim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnesian Limestone (other)
The Magnesian Limestone is a suite of carbonate rocks in north-east England dating from the Permian period. The outcrop stretches from Nottingham northwards through Yorkshire and into County Durham where it is exposed along the coast between Hartlepool and South Shields. The term has now been discontinued in formal use though it appears widely in popular and scientific literature on the geology of northern England. The Magnesian Limestone is now incorporated within the Zechstein Group. In the southern part of its outcrop, the former 'Lower Magnesian Limestone' is now referred to as the 'Cadeby Formation'. Overlying this it is the 'Edlington Formation' (formerly the 'Middle Permian Marl') and above this the Brotherton Formation (formerly the 'Upper Magnesian Limestone'). In the north, the Lower Magnesian Limestone is now referred to as the Raisby Formation and the middle Magnesian Limestone as the Ford Formation. The Upper Magnesian Limestone is replaced by the Roker Formation (i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnesium
Magnesium is a chemical element; it has Symbol (chemistry), symbol Mg and atomic number 12. It is a shiny gray metal having a low density, low melting point and high chemical reactivity. Like the other alkaline earth metals (group 2 of the periodic table), it occurs naturally only in combination with other elements and almost always has an oxidation state of +2. It reacts readily with air to form a thin Passivation (chemistry), passivation coating of magnesium oxide that inhibits further corrosion of the metal. The free metal burns with a brilliant-white light. The metal is obtained mainly by electrolysis of magnesium Salt (chemistry), salts obtained from brine. It is less dense than aluminium and is used primarily as a component in strong and lightweight magnesium alloy, alloys that contain aluminium. In the cosmos, magnesium is produced in large, aging stars by the sequential addition of three Helium nucleus, helium nuclei to a carbon nucleus. When such stars explo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Milk Of Magnesia
Magnesium hydroxide is an inorganic compound with the chemical formula Mg(OH)2. It occurs in nature as the mineral brucite. It is a white solid with low solubility in water (). Magnesium hydroxide is a common component of antacids, such as milk of magnesia. Preparation Treating the solution of different soluble magnesium salts with alkaline water induces the precipitation of the solid hydroxide Mg(OH)2: :Mg2+ + 2 OH− → Mg(OH)2 As is the second most abundant cation present in seawater after , it can be economically extracted directly from seawater by alkalinisation as described here above. On an industrial scale, Mg(OH)2 is produced by treating seawater with lime (Ca(OH)2). A volume of of seawater gives about of Mg(OH)2. Ca(OH)2 ) is far more soluble than Mg(OH)2 ) and dramatically increases the pH value of seawater from 8.2 to 12.5. The less soluble precipitates because of the common ion effect due to the added by the dissolution of : : For seawater brines, pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnesia (hypothetical City) , a f ...
Magnesia may refer to: Chemistry and geology *Magnesium oxide **Periclase or magnesia, a natural mineral of magnesium oxide *Magnesian limestone (other) *Magnesium *Milk of magnesia, a suspension of magnesium hydroxide Geography * Magnesia (hypothetical city), a future colony of Knossos, imagined in Plato's ''Laws'' *Magnesia (regional unit), the southeastern area of Thessaly in central Greece *Ancient Magnesia, a historical region of Greece with borders differing from the modern regional unit *Magnesia ad Sipylum, a city of Lydia, now Manisa in Turkey **Battle of Magnesia, 190 BC, the concluding battle of the Roman–Seleucid War *Magnesia on the Maeander, an ancient Greek city in Anatolia *Magnesia Prefecture Magnesia Prefecture () was one of the prefectures of Greece. Its capital was Volos. It was established in 1899 from the Larissa Prefecture. The prefecture was disbanded on 1 January 2011 by the Kallikratis programme, and split into the regional ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laws (dialogue)
The ''Laws'' () is Plato's last and longest dialogue. The conversation depicted in the work's twelve books begins with the question of who is given the credit for establishing a civilization's laws. Its musings on the ethics of government and law have frequently been compared to Plato's more widely read ''Republic''. Some scholars see this as the work of Plato as an older man having failed in his effort to guide the rule of the tyrant Dionysius II of Syracuse. These events are alluded to in the '' Seventh Letter''. The text is noteworthy as the only Platonic dialogue not to feature Socrates. Setting Characters Unlike most of Plato's dialogues, Socrates does not appear in the ''Laws''. The conversation is instead led by an Athenian Stranger * An Athenian "Stranger" () * Cleinias of Knossos * Megillus of Sparta Summary The Athenian Stranger joins the other two on their religious pilgrimage from Knossos, on Crete to the cave of Zeus on Mount Ida. The entire dialogue takes p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnesia (regional Unit)
Magnesia (, ''Magnisía'', , Ancient Greek: ''Magnēsía'', deriving from the tribe name ''Magnetes'') is one of the regional units of Greece. It is part of the modern regions of Greece, region of Thessaly. Its capital is the city of Volos. About 70% of the population of Magnesia live in the Greater Volos area, which is the second-largest city in Thessaly and the third busiest commercial port in Greece. According to the most recent census (2021), the population stands at 177,448. The regional unit hosts 2,000,000 tourists annually. Magnesia is represented in the Greek Parliament by six seats. Its main agricultural products are wheat, cotton, tomatoes, grapes, olives, apples and honey. Geography A prominent geographic feature of Magnesia is the Pagasetic Gulf, a bay of the Aegean Sea. The Pelion mountain range closes off the Gulf on the east and south side, leaving only a narrow channel near Trikeri. The highest peak of the wooded Pelion is ''Pourianos Stavros'' or ''Xeforti'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ancient Magnesia
Anciently, Magnesia () was a region of Ancient Greece, eventually absorbed by ancient Thessaly. Originally inhabited by the Magnetes (Μάγνητες), Magnesia was the long and narrow slip of country between Mounts Mount Ossa (Greece), Ossa and Pelion on the west and the sea on the east, and extending from the mouth of the Pineios (Thessaly), Peneius on the north to the Pagasaean Gulf on the south. The Magnetes were members of the Amphictyonic League, and were settled in this district in the Homeric times, and mentioned in the ''Iliad''. The Thessalian Magnetes are said to have founded the Asiatic cities of Magnesia ad Sipylum and Magnesia on the Maeander.Aristot. ''ap. Athen.'' 4.173; Conon 29; The towns of Magnesia were: Aesonis, Aphetae, Boebe (Thessaly), Boebe, Casthanaea, Cercinium, Coracae, Demetrias, Eurymenae, Glaphyrae, Homole or Homolium, Iolcus, Magnesia, Thessaly, Magnesia, Meliboea (Magnesia), Meliboea, Methone (Thessaly), Methone, Mylae (Thessaly), Mylae, Nelia, Ol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnesia Ad Sipylum
Magnesia Sipylum ( or ; modern Manisa, Turkey) was a city of Lydia, situated about 65 km northeast of Smyrna (now İzmir) on the river Hermus (now Gediz) at the foot of Mount Sipylus. The city should not be confused with its older neighbor, Magnesia on the Maeander, both founded by colonists from the Greek region of Magnesia. History The first famous mention of the city is in 190 BC, when Antiochus the Great was defeated in the battle of Magnesia by the Roman consul Lucius Cornelius Scipio Asiaticus. It became a city of importance under Roman rule and, though nearly destroyed by an earthquake in the reign of Tiberius, was restored by that emperor and flourished through the Roman Empire. It was an important regional centre through the Byzantine Empire, and during the 13th-century interregnum of the Empire of Nicea. Magnesia housed the Imperial mint, the Imperial treasury, and served as the functional capital of the Empire until the recovery of Constantinople in 1261 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Magnesia
The Battle of Magnesia took place in either December 190 or January 189 BC. It was fought as part of the Roman–Seleucid War, pitting forces of the Roman Republic led by the Roman consul, consul Lucius Cornelius Scipio Asiaticus and the allied Kingdom of Pergamon under Eumenes II of Pergamum, Eumenes II against a Seleucid Empire, Seleucid army of Antiochus III the Great. The two armies initially camped northeast of Magnesia ad Sipylum in Asia Minor (modern-day Manisa, Turkey), attempting to provoke each other into a battle on favorable terrain for several days. When the battle finally began, Eumenes managed to throw the Seleucid left flank into disarray. While Antiochus' cavalry overpowered his adversaries on the right flank of the battlefield, his army's center collapsed before he could reinforce it. Modern estimates give 10,000 dead for the Seleucids and 5,000 killed for the Romans. The battle resulted in a decisive Roman-Pergamene victory, which led to the Treaty of Apamea t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnesia On The Maeander
Magnesia may refer to: Chemistry and geology *Magnesium oxide ** Periclase or magnesia, a natural mineral of magnesium oxide * Magnesian limestone (other) *Magnesium * Milk of magnesia, a suspension of magnesium hydroxide Geography * Magnesia (hypothetical city), a future colony of Knossos, imagined in Plato's ''Laws Law is a set of rules that are created and are law enforcement, enforceable by social or governmental institutions to regulate behavior, with its precise definition a matter of longstanding debate. It has been variously described as a Socia ...'' * Magnesia (regional unit), the southeastern area of Thessaly in central Greece * Ancient Magnesia, a historical region of Greece with borders differing from the modern regional unit * Magnesia ad Sipylum, a city of Lydia, now Manisa in Turkey ** Battle of Magnesia, 190 BC, the concluding battle of the Roman–Seleucid War * Magnesia on the Maeander, an ancient Greek city in Anatolia * Magnesia Prefecture [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
