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Choe Han-gi
Choe Han-gi (; 1803 – 1877) was a Korean Confucian scholar and philosopher. He is known for integrating Eastern philosophy with Western science in pre-industrial Korea. Names His pen name was Hyegang (), and according to some sources, it is mentioned that he also used Paedong (). Early life Hyegang was born in Gaeseong (Kaesŏng), northwest of Seoul, in the Joseon Kingdom. His father was Choe Chihyeon of the Saknyeong Choe family, and his mother was a daughter of Han Kyŏng-ni of the Cheongju Han family. Hyegang was adopted by his uncle Hyegang Gwanghyeon sometime after his birth. His foster father and uncle, a bureaucrat, took him into his care after his father passed away when he was ten. Hyegang passed the saengwon examination, a civil service examination and in 1849 and later received the post as a Civil Servant. Han Kyŏng-ni, his maternal grandfather, and Kim Hŏn-gi (1774–1842) were popular Confucian scholars in Gaeseong (Kaesŏng), where Hyegang spent his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Choi (Korean Surname)
Choi is a Korean family surname. As of the South Korean census of 2015, there were around 2.3 million people by this name in South Korea or roughly 4.7% of the population. In English-speaking countries, it is most often anglicized ''Choi'', and sometimes also ''Chey'', ''Choe'' or ''Chwe''. Ethnic Koreans in the former USSR prefer the form ''Tsoi'' (''Tsoy'') especially as a transcription of the Cyrillic Цой. Origin *According to Samguk Sagi, the Gyeongju clan originates from chief Sobeoldori (소벌도리, 蘇伐都利) of Goheochon (고허촌, 高墟村), one of six villages that united to found Silla; The Gyeongju clan traces their origin back to Choi Chiwon (857–10th century), a noted Korean scholar, philosopher, and poet of the late Unified Silla period (668–935). *One theory of origin suggests that Haeju clan's progenitor Choi Choong (최충, 崔沖, 984–1068) was given the surname 崔 during the reign of Goryeo king Mokjong. *The progenitor of the Chungju cla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quantum Mechanics
Quantum mechanics is a fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles. It is the foundation of all quantum physics including quantum chemistry, quantum field theory, quantum technology, and quantum information science. Classical physics, the collection of theories that existed before the advent of quantum mechanics, describes many aspects of nature at an ordinary ( macroscopic) scale, but is not sufficient for describing them at small (atomic and subatomic) scales. Most theories in classical physics can be derived from quantum mechanics as an approximation valid at large (macroscopic) scale. Quantum mechanics differs from classical physics in that energy, momentum, angular momentum, and other quantities of a bound system are restricted to discrete values ( quantization); objects have characteristics of both particles and waves (wave–particle duality); and there are limit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korean Confucianists
Korean may refer to: People and culture * Koreans, ethnic group originating in the Korean Peninsula * Korean cuisine * Korean culture * Korean language **Korean alphabet, known as Hangul or Chosŏn'gŭl **Korean dialects and the Jeju language **See also: North–South differences in the Korean language Places * Korean Peninsula, a peninsula in East Asia * Korea, a region of East Asia * North Korea, the Democratic People's Republic of Korea * South Korea, the Republic of Korea Other uses * Korean Air, flag carrier and the largest airline of South Korea See also *Korean War, 1950–1953 war between North Korea and South Korea * Names of Korea, various country names used in international contexts *History of Korea The Lower Paleolithic era in the Korean Peninsula and Manchuria began roughly half a million years ago. Christopher J. Norton, "The Current State of Korean Paleoanthropology", (2000), ''Journal of Human Evolution'', 38: 803–825. The earlies ..., the history of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
19th-century Korean Philosophers
The 19th (nineteenth) century began on 1 January 1801 ( MDCCCI), and ended on 31 December 1900 ( MCM). The 19th century was the ninth century of the 2nd millennium. The 19th century was characterized by vast social upheaval. Slavery was abolished in much of Europe and the Americas. The First Industrial Revolution, though it began in the late 18th century, expanding beyond its British homeland for the first time during this century, particularly remaking the economies and societies of the Low Countries, the Rhineland, Northern Italy, and the Northeastern United States. A few decades later, the Second Industrial Revolution led to ever more massive urbanization and much higher levels of productivity, profit, and prosperity, a pattern that continued into the 20th century. The Islamic gunpowder empires fell into decline and European imperialism brought much of South Asia, Southeast Asia, and almost all of Africa under colonial rule. It was also marked by the collapse of the lar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gyeonggi Province
Gyeonggi-do (, ) is the most populous province in South Korea. Its name, ''Gyeonggi'', means "京 (the capital) and 畿 (the surrounding area)". Thus, ''Gyeonggi-do'' can be translated as "Seoul and the surrounding areas of Seoul". Seoul, the nation's largest city and capital, is in the heart of the area but has been separately administered as a provincial-level ''special city'' since 1946. Incheon, the nation's third-largest city, is on the coast of the province and has been similarly administered as a provincial-level ''metropolitan city'' since 1981. The three jurisdictions are collectively referred to as ''Sudogwon'' and cover , with a combined population of 25.5 million—amounting to over half of the entire population of South Korea. History Gyeonggi-do has been a politically important area since 18 BCE, when Korea was divided into three nations during the Three Kingdoms period. Ever since King Onjo, the founder of Baekje (one of the three kingdoms), founded the gov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suwon
Suwon (, ) is the capital and largest city of Gyeonggi-do, South Korea's most populous province which surrounds Seoul, the national capital. Suwon lies about south of Seoul. It is traditionally known as "The City of Filial Piety". With a population close to 1.3 million, it is larger than Ulsan, although it is not governed as a metropolitan city. Suwon has existed in various forms throughout Korea's history, growing from a small settlement to become a major industrial and cultural center. It is the only remaining completely walled city in South Korea. The city walls are one of the more popular tourist destinations in Gyeonggi Province. Samsung Electronics R&D center and headquarters are in Suwon. The city is served by three motorways, the national railway network, and the Seoul Metropolitan Subway. Suwon is a major educational center, home to eleven universities. Suwon is home to several football, baseball, basketball and volleyball teams, including four-time K League champ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ajou University
Ajou University () is a private research university located in Suwon, Gyeonggi Province, South Korea. It was founded in 1973 by an agreement between the governments of France and the Republic of Korea. Ajou University started as Ajou Engineering Junior College with the aim of exchanging technology and culture through education between France and South Korea. The name Ajou University contains the ideology of becoming the center of Asia in the 21st century, when Asia becomes the center of the world, and represents the Gyeonggi-do region. Ajou is located on a single campus with all details, research-oriented university hospitals, Techno Valley, Samsung Electronics headquarters, CJ Blossom Park, administrative town (Gyeonggi Provincial Office, Gyeonggi Provincial Council, Education Office, Gyeonggi Representative Library), and legal town (Suwon High Court, Suwon High Prosecutor's Office). Gyeonggi-do Province, administrative towns, legal towns and pharmacies have signed MOUs with Aj ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrochloric Acid
Hydrochloric acid, also known as muriatic acid, is an aqueous solution of hydrogen chloride. It is a colorless solution with a distinctive pungent smell. It is classified as a strong acid. It is a component of the gastric acid in the digestive systems of most animal species, including humans. Hydrochloric acid is an important laboratory reagent and industrial chemical. History In the early tenth century, the Persian physician and alchemist Abu Bakr al-Razi ( 865–925, Latin: Rhazes) conducted experiments with sal ammoniac ( ammonium chloride) and vitriol (hydrated sulfates of various metals), which he distilled together, thus producing the gas hydrogen chloride. In doing so, al-Razi may have stumbled upon a primitive method for producing hydrochloric acid, as perhaps manifested in the following recipe from his ("The Book of Secrets"): However, it appears that in most of his experiments al-Razi disregarded the gaseous products, concentrating instead on the color c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nitric Acid
Nitric acid is the inorganic compound with the formula . It is a highly corrosive mineral acid. The compound is colorless, but older samples tend to be yellow cast due to decomposition into oxides of nitrogen. Most commercially available nitric acid has a concentration of 68% in water. When the solution contains more than 86% , it is referred to as ''fuming nitric acid''. Depending on the amount of nitrogen dioxide present, fuming nitric acid is further characterized as red fuming nitric acid at concentrations above 86%, or white fuming nitric acid at concentrations above 95%. Nitric acid is the primary reagent used for nitration – the addition of a nitro group, typically to an organic molecule. While some resulting nitro compounds are shock- and thermally-sensitive explosives, a few are stable enough to be used in munitions and demolition, while others are still more stable and used as pigments in inks and dyes. Nitric acid is also commonly used as a strong oxidizi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulfuric Acid
Sulfuric acid ( American spelling and the preferred IUPAC name) or sulphuric acid ( Commonwealth spelling), known in antiquity as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with the molecular formula . It is a colorless, odorless and viscous liquid that is miscible with water. Pure sulfuric acid does not exist naturally on Earth due to its strong affinity to water vapor; it is hygroscopic and readily absorbs water vapor from the air. Concentrated sulfuric acid is highly corrosive towards other materials, from rocks to metals, since it is an oxidant with powerful dehydrating properties. Phosphorus pentoxide is a notable exception in that it is not dehydrated by sulfuric acid, but to the contrary dehydrates sulfuric acid to sulfur trioxide. Upon addition of sulfuric acid to water, a considerable amount of heat is released; thus the reverse procedure of adding water to the acid should not be performed since the heat released ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seonggyungwan University
Sungkyunkwan University (SKKU or simply ''Seongdae'', Hangul: 성균관대학교; Hanja: 成均館大學校) is a private comprehensive research university in South Korea. The institution traces its origins to the historic Sungkyunkwan, founded in 1398 and located in central Seoul. SKKU Official Brochure 2013 As the foremost educational institution of the Joseon, Joseon Dynasty, it was governed by the great code of the state administration Gyeongguk Daejeon, the great code [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
