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1790s In Denmark
Year 179 ( CLXXIX) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Aurelius and Veru (or, less frequently, year 932 ''Ab urbe condita''). The denomination 179 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman empire * The Roman fort Castra Regina ("fortress by the Regen river") is built at Regensburg, on the right bank of the Danube in Germany. * Roman legionaries of Legio II ''Adiutrix'' engrave on the rock of the Trenčín Castle (Slovakia) the name of the town ''Laugaritio'', marking the northernmost point of Roman presence in that part of Europe. * Marcus Aurelius drives the Marcomanni over the Danube and reinforces the border. To repopulate and rebuild a devastated Pannonia, Rome allows the first German colonists to enter territory cont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roman Numerals
Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers are written with combinations of letters from the Latin alphabet, each letter with a fixed integer value, modern style uses only these seven: The use of Roman numerals continued long after the decline of the Roman Empire. From the 14th century on, Roman numerals began to be replaced by Arabic numerals; however, this process was gradual, and the use of Roman numerals persists in some applications to this day. One place they are often seen is on clock faces. For instance, on the clock of Big Ben (designed in 1852), the hours from 1 to 12 are written as: The notations and can be read as "one less than five" (4) and "one less than ten" (9), although there is a tradition favouring representation of "4" as "" on Roman numeral clocks. Other common uses include year numbers on monuments and buildings and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marcomanni
The Marcomanni were a Germanic people * * * that established a powerful kingdom north of the Danube, somewhere near modern Bohemia, during the peak of power of the nearby Roman Empire. According to Tacitus and Strabo, they were Suebian. Origin It is believed their name may derive from Proto-Germanic ''*markō'' "border, boundary" (hence the English ''march'' or ''mark'', meaning "frontier, border", as in the Welsh marches and the kingdom of Mercia) and ''*mann-'' (pl. ''*manniz'') "man", ''*Markōmanniz'', which would have been rendered in Latinised form as ''Marcomanni''. The Marcomanni first appear in historical records as confederates of the Suebi of Ariovistus fighting against Julius Caesar in Gaul (now France) after they had crossed the Rhine from what is now southern Germany. The exact position of their lands at the time is not known. The fact that their name existed before the Romans had territory near the Danube or Rhine raises the question of which border they lived ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liu Bei
Liu Bei (, ; ; 161 – 10 June 223), courtesy name Xuande (), was a warlord in the late Eastern Han dynasty who founded the state of Shu Han in the Three Kingdoms period and became its first ruler. Although he was a distant relative of the Han imperial family, Liu Bei's father died when he was a child and left his family impoverished. To help his mother, he sold shoes and straw mats. When he reached the age of fifteen, his mother sent him to study under Lu Zhi. In his youth, Liu Bei was known as ambitious and charismatic. He gathered a militia army to fight the Yellow Turbans. Liu Bei fought bravely in many battles and grew famous for his exploits. Later, he participated in the coalition against Dong Zhuo, following this joined his childhood friend Gongsun Zan and fought under him against Yuan Shao. Later he was sent to help Tao Qian against Cao Cao. Thanks to the support of the influential Mi and Chen families along with Tao Qian's last will, Liu Bei inherited the Xu Pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pang Tong
Pang Tong () (179–214), courtesy name Shiyuan, was a key adviser to the warlord Liu Bei in the late Eastern Han dynasty of China. In his youth, Pang Tong was disregarded because he was plain looking, however Sima Hui highly esteemed him calling him the "Crown of Scholars in Jing Province". He studied under him along with Zhuge Liang, Xu Shu and Xiang Lang and was given the nickname of "Fledgling Phoenix". Because of his friendly attitude, he worked as an appraiser in Nan Commandery. When reviewing someone, he would prioritize their virtue over their abilities and would encourage them to help others. He briefly served Zhou Yu and befriended Lu Ji, Gu Shao and Quan Cong before joining Liu Bei after the latter became the provincial governor in 210. Under the recommendation of both Lu Su and Zhuge Liang, Liu Bei appointed him to Assistant Officer and promoted him to Military Adviser Generals of the Household. He advised Liu Bei to take over Yi Province accompanied him on his camp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liu Hui
Liu Hui () was a Chinese mathematician who published a commentary in 263 CE on ''Jiu Zhang Suan Shu (The Nine Chapters on the Mathematical Art).'' He was a descendant of the Marquis of Zixiang of the Eastern Han dynasty and lived in the state of Cao Wei during the Three Kingdoms period (220-280 CE) of China. His major contributions as recorded in his commentary on ''The Nine Chapters on the Mathematical Art'' include a proof of the Pythagorean theorem, theorems in solid geometry, an improvement on Archimedes's approximation of , and a systematic method of solving linear equations in several unknowns. In his other work, ''Haidao Suanjing (The Sea Island Mathematical Manual)'', he wrote about geometrical problems and their application to surveying. He probably visited Luoyang, where he measured the sun's shadow. Mathematical work Liu Hui expressed mathematical results in the form of decimal fractions that utilized metrological units (i.e., related units of length with base 10 s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nine Chapters On The Mathematical Art
''The Nine Chapters on the Mathematical Art'' () is a Chinese mathematics book, composed by several generations of scholars from the 10th–2nd century BCE, its latest stage being from the 2nd century CE. This book is one of the earliest surviving mathematical texts from China, the first being '' Suan shu shu'' (202 BCE – 186 BCE) and ''Zhoubi Suanjing'' (compiled throughout the Han until the late 2nd century CE). It lays out an approach to mathematics that centres on finding the most general methods of solving problems, which may be contrasted with the approach common to ancient Greek mathematicians, who tended to deduce propositions from an initial set of axioms. Entries in the book usually take the form of a statement of a problem, followed by the statement of the solution and an explanation of the procedure that led to the solution. These were commented on by Liu Hui in the 3rd century. History Original book The full title of ''The Nine Chapters on the Mathemat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and borders fourteen countries by land, the most of any country in the world, tied with Russia. Covering an area of approximately , it is the world's third largest country by total land area. The country consists of 22 provinces, five autonomous regions, four municipalities, and two Special Administrative Regions (Hong Kong and Macau). The national capital is Beijing, and the most populous city and financial center is Shanghai. Modern Chinese trace their origins to a cradle of civilization in the fertile basin of the Yellow River in the North China Plain. The semi-legendary Xia dynasty in the 21st century BCE and the well-attested Shang and Zhou dynasties developed a bureaucratic political system to serve hereditary monarchies, or dyna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
