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Hisashi Terao
Hisashi Terao (寺尾 寿, ''Terao Hisashi'') (1855-1923) was a Japanese astronomer and mathematician. He graduated from the Tokyo imperial University as well as from the University of Paris, and he was one of the founding members and the first principal of the The Tokyo Academy of Physics (now Tokyo University of Science). Notable students that studied under him include Shin Hirayama, Hisashi Kimura, and Kiyotsugu Hirayama. He is also called one of the first astronomers of the Meiji era. Biography Terao was born as the eldest son to Kiheita Terao, a samurai of the Fukuoka Domain in Haruyoshi village, Naka District, Chikuzen Province, Japan (now Nakasu, Hakata-ku, Fukuoka, Fukuoka Prefecture). He studied at the Shuyukan Han school (currently Fukuoka Prefectural Shuyukan High School) and went on in 1873 to stay in Tokyo where he took a course in French language at the Tokyo School of Foreign Studies (currently, Tokyo University of Foreign Studies) which he completed before enr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chikuzen Province
was an old province of Japan in the area that is today part of Fukuoka Prefecture in Kyūshū. It was sometimes called or , with Chikugo Province. Chikuzen bordered Buzen, Bungo, Chikugo, and Hizen Provinces. History The original provincial capital is believed to be near Dazaifu, although Fukuoka city has become dominant in modern times. At the end of the 13th century, Chikuzen was the landing point for a Mongol invasion force. But the main force was destroyed by a typhoon (later called kamikaze). In April 1336, Kikuchi Taketoshi attacked the Shoni clan stronghold at Dazaifu. At the time, the Shoni were allied with Ashikaga Takauji in his battles against Go-Daigo. The Shoni were defeated, which led to the suicide of several clan members, including their leader Shoni Sadatsune. In the Meiji period, the provinces of Japan were converted into prefectures. Maps of Japan and Chikuzen Province were reformed in the 1870s. At the same time, the province continued to exis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fukuoka Prefectural Shuyukan High School
is a co-educational public senior high school in Fukuoka, Fukuoka, Japan. Overview Founded as a Han school in 1784, Edo period, Shuyukan is one of the oldest high schools in Japan with a history of over 200 years. After the Meiji Restoration, it was transformed into an English vocational school where all subjects were taught in English. Today, it is considered to be among the elite schools in Japan with a number of graduates continuing their studies at prestigious universities in Japan. The name "Shuyu" was taken from a passage in "The Charge to Prince Weizi" from Shangshu, a history text from ancient China. The school logo ''Rokkosei'' (Six-Light-Star) is a reference to a poem by Shu Shunsui (1600–1682), and is shaped after the North Star. Just as the North Star remains in the same position, consistently pointing towards the North, the ''Rokkosei'' serves as a pilot star that will guide the students throughout their lives towards a certain direction with unwavering faith. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theta Function
In mathematics, theta functions are special functions of several complex variables. They show up in many topics, including Abelian varieties, moduli spaces, quadratic forms, and solitons. As Grassmann algebras, they appear in quantum field theory. The most common form of theta function is that occurring in the theory of elliptic functions. With respect to one of the complex variables (conventionally called ), a theta function has a property expressing its behavior with respect to the addition of a period of the associated elliptic functions, making it a quasiperiodic function. In the abstract theory this quasiperiodicity comes from the cohomology class of a line bundle on a complex torus, a condition of descent. One interpretation of theta functions when dealing with the heat equation is that "a theta function is a special function that describes the evolution of temperature on a segment domain subject to certain boundary conditions". Throughout this article, (e^)^ should b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elliptic Function
In the mathematical field of complex analysis, elliptic functions are a special kind of meromorphic functions, that satisfy two periodicity conditions. They are named elliptic functions because they come from elliptic integrals. Originally those integrals occurred at the calculation of the arc length of an ellipse. Important elliptic functions are Jacobi elliptic functions and the Weierstrass \wp-function. Further development of this theory led to hyperelliptic functions and modular forms. Definition A meromorphic function is called an elliptic function, if there are two \mathbb- linear independent complex numbers \omega_1,\omega_2\in\mathbb such that : f(z + \omega_1) = f(z) and f(z + \omega_2) = f(z), \quad \forall z\in\mathbb. So elliptic functions have two periods and are therefore also called ''doubly periodic''. Period lattice and fundamental domain Iff is an elliptic function with periods \omega_1,\omega_2 it also holds that : f(z+\gamma)=f(z) for every linear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meridian Circle
The meridian circle is an instrument for timing of the passage of stars across the local meridian, an event known as a culmination, while at the same time measuring their angular distance from the nadir. These are special purpose telescopes mounted so as to allow pointing only in the meridian, the great circle through the north point of the horizon, the north celestial pole, the zenith, the south point of the horizon, the south celestial pole, and the nadir. Meridian telescopes rely on the rotation of the sky to bring objects into their field of view and are mounted on a fixed, horizontal, east–west axis. The similar transit instrument, transit circle, or transit telescope is likewise mounted on a horizontal axis, but the axis need not be fixed in the east–west direction. For instance, a surveyor's theodolite can function as a transit instrument if its telescope is capable of a full revolution about the horizontal axis. Meridian circles are often called by these names, altho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sendai
is the capital Cities of Japan, city of Miyagi Prefecture, the largest city in the Tōhoku region. , the city had a population of 1,091,407 in 525,828 households, and is one of Japan's 20 Cities designated by government ordinance of Japan, designated cities. The city was founded in 1600 by the ''daimyō'' Date Masamune. It is nicknamed the ; there are Japanese zelkova trees lining many of the main thoroughfares such as and . In the summer, the Sendai Tanabata Festival, the largest Tanabata festival in Japan, is held. In winter, the trees are decorated with thousands of lights for the , lasting through most of December. On 11 March 2011, coastal areas of the city suffered catastrophic damage from a 2011 Tōhoku earthquake and tsunami, magnitude 9.0 offshore earthquake,UK Foreign Office 9.0 assessment [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of Education, Culture, Sports, Science And Technology
The , also known as MEXT or Monka-shō, is one of the eleven Ministries of Japan that composes part of the executive branch of the Government of Japan. Its goal is to improve the development of Japan in relation with the international community. The ministry is responsible for funding research under its jurisdiction, some of which includes: children's health in relation to home environment, delta-sigma modulations utilizing graphs, gender equality in sciences, neutrino detection which contributes to the study of supernovas around the world, and other general research for the future. History The Meiji government created the first Ministry of Education in 1871. In January 2001, the former Ministry of Education, Science, Sports and Culture and the former merged to become the present MEXT. Organization The Ministry of Education, Culture, Sports, Science and Technology currently is led by the Minister of Education, Culture, Sports, Science and Technology. Under that position i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caribbean Sea
The Caribbean Sea ( es, Mar Caribe; french: Mer des Caraïbes; ht, Lanmè Karayib; jam, Kiaribiyan Sii; nl, Caraïbische Zee; pap, Laman Karibe) is a sea of the Atlantic Ocean in the tropics of the Western Hemisphere. It is bounded by Mexico and Central America to the west and southwest, to the north by the Greater Antilles starting with Cuba, to the east by the Lesser Antilles, and to the south by the northern coast of South America. The Gulf of Mexico lies to the northwest. The entire area of the Caribbean Sea, the numerous islands of the West Indies, and adjacent coasts are collectively known as the Caribbean. The Caribbean Sea is one of the largest seas and has an area of about . The sea's deepest point is the Cayman Trough, between the Cayman Islands and Jamaica, at below sea level. The Caribbean coastline has many gulfs and bays: the Gulf of Gonâve, Gulf of Venezuela, Gulf of Darién, Golfo de los Mosquitos, Gulf of Paria and Gulf of Honduras. The Caribbean Sea has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martinique
Martinique ( , ; gcf, label=Martinican Creole, Matinik or ; Kalinago: or ) is an island and an overseas department/region and single territorial collectivity of France. An integral part of the French Republic, Martinique is located in the Lesser Antilles of the West Indies in the eastern Caribbean Sea. It has a land area of and a population of 364,508 inhabitants as of January 2019.Populations légales 2019: 972 Martinique INSEE One of the , it is directly north of Saint Lucia, northwest of |
Transit Of Venus
frameless, upright=0.5 A transit of Venus across the Sun takes place when the planet Venus passes directly between the Sun and a superior planet, becoming visible against (and hence obscuring a small portion of) the solar disk. During a transit, Venus can be seen from Earth as a small black dot moving across the face of the Sun. The duration of such transits is usually several hours (the transit of 2012 lasted 6 hours and 40 minutes). A transit is similar to a solar eclipse by the Moon. While the diameter of Venus is more than three times that of the Moon, Venus appears smaller, and travels more slowly across the face of the Sun, because it is much farther away from Earth. Transits of Venus are among the rarest of predictable astronomical phenomena. They occur in a pattern that generally repeats every 243 years, with pairs of transits eight years apart separated by long gaps of 121.5 years and 105.5 years. The periodicity is a reflection of the fact that the orbital periods ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris Observatory
The Paris Observatory (french: Observatoire de Paris ), a research institution of the Paris Sciences et Lettres University, is the foremost astronomical observatory of France, and one of the largest astronomical centers in the world. Its historic building is on the Left Bank of the Seine in central Paris, but most of the staff work on a satellite campus in Meudon, a suburb southwest of Paris. The Paris Observatory was founded in 1667. Construction was completed by the early 1670s and coincided with a major push for increased science, and the founding of the Royal Academy of Sciences. King Louis XIV's minister of finance organized a "scientific powerhouse" to increase understanding of astronomy, maritime navigation, and science in general. Through the centuries the Paris Observatory has continued in support of astronomical activities, and in the 21st century connects multiple sites and organizations, supporting astronomy and science, past and present. Constitution Administrat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celestial Mechanics
Celestial mechanics is the branch of astronomy that deals with the motions of objects in outer space. Historically, celestial mechanics applies principles of physics (classical mechanics) to astronomical objects, such as stars and planets, to produce ephemeris data. History Modern analytic celestial mechanics started with Isaac Newton's Principia of 1687. The name "celestial mechanics" is more recent than that. Newton wrote that the field should be called "rational mechanics." The term "dynamics" came in a little later with Gottfried Leibniz, and over a century after Newton, Pierre-Simon Laplace introduced the term "celestial mechanics." Prior to Kepler there was little connection between exact, quantitative prediction of planetary positions, using geometrical or arithmetical techniques, and contemporary discussions of the physical causes of the planets' motion. Johannes Kepler Johannes Kepler (1571–1630) was the first to closely integrate the predictive geom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
