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Ukichiro Nakaya
was a Japanese physicist and science essayist known for his work in glaciology and low-temperature sciences. He is credited with making the first artificial snowflakes. Life and research Nakaya was born near the Katayamazu hot springs in Kaga, Ishikawa Prefecture, near the area depicted in '' Hokuetsu Seppu'', an encyclopedic work published in 1837 that contains 183 sketches of natural snowflake crystals – the subject that became Nakaya's life work. Nakaya later wrote that his father wanted him to be a potter and sent him to live with a potter while he was in primary school. His father died after he finished primary school, but Nakaya's first scientific paper, written in 1924 for the inaugural issue of the proceedings of the Physics Department of Tokyo Imperial University, was devoted to Japanese Kutani porcelain. Nakaya was inspired to study physics in high school by the nebular hypotheses of Kant and Laplace and by the works of Hajime Tanabe. He majored in experiment ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaga, Ishikawa
is a city located in southwestern Ishikawa Prefecture, Japan. , the city had an estimated population of 67,793 in 29054 households, and a population density of 290 persons per km². The total area of the city was . Geography Kaga is located in the extreme southwestern corner of Ishikawa Prefecture in the Hokuriku region of Japan and is bordered by the Sea of Japan to the west and Fukui Prefecture to the south. Parts of the coastal areas of the city are within the borders of the Echizen-Kaga Kaigan Quasi-National Park. Neighbouring municipalities *Ishikawa Prefecture ** Komatsu *Fukui Prefecture ** Awara ** Katsuyama **Sakai Climate Kaga has a humid continental climate (Köppen ''Cfa'') characterized by mild summers and cold winters with heavy snowfall. The average annual temperature in Kaga is 14.2 °C. The average annual rainfall is 2499 mm with September as the wettest month. The temperatures are highest on average in August, at around 26.8 °C, and lowes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kutani Ware
is a style of Japanese porcelain traditionally supposed to be from Kutani, now a part of Kaga, Ishikawa, in the former Kaga Province. It is divided into two phases: ''Ko-Kutani'' (old Kutani), from the 17th and early 18th centuries, and ''Saikō-Kutani'' from the revived production in the 19th century. The more prestigious ''Ko-Kutani'' wares are recognised by scholars to be a complex and much mis-represented group, very often not from Kutani at all. Kutani ware, especially in the ''Ko-Kutani'' period, is marked by vivid dark colors that epitomize lavish aesthetics. It is theorized that the long, harsh and grey winters of the Hokuriku region led to a desire among people living there for ceramic ware to show strong and bold colours. The classical five colours style is known as ''gosai-de'' (五彩手) which includes green, blue, yellow, purple, and red. The designs are bold and normally depict landscapes, the beauty of nature, and people, and cover most of the surface of each ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hokkaido University
, or , is a Japanese national university in Sapporo, Hokkaido. It was the fifth Imperial University in Japan, which were established to be the nation's finest institutions of higher education or research. Hokkaido University is considered one of the top universities in Japan and was ranked 5th in THE Japan University Rankings. It was also selected as a "Top Type" university by the Japanese government's Top Global University Project. The main campus is located in downtown Sapporo, just north of Sapporo Station, and stretches approximately 2.4 kilometers northward. History The history of the university dates to the formal incorporation of Yezo as Hokkaido into the Japanese realm. Director of the Hokkaidō Development Commission Kuroda Kiyotaka, having traveled to America in 1870, looked to the American model of settling the new lands. Upon return he brought General Horace Capron, a commissioner of agriculture who pushed for the adoption of new agricultural practices and crops ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
X-ray
An X-ray, or, much less commonly, X-radiation, is a penetrating form of high-energy electromagnetic radiation. Most X-rays have a wavelength ranging from 10 picometers to 10 nanometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz ( to ) and energies in the range 145 eV to 124 keV. X-ray wavelengths are shorter than those of UV rays and typically longer than those of gamma rays. In many languages, X-radiation is referred to as Röntgen radiation, after the German scientist Wilhelm Conrad Röntgen, who discovered it on November 8, 1895. He named it ''X-radiation'' to signify an unknown type of radiation.Novelline, Robert (1997). ''Squire's Fundamentals of Radiology''. Harvard University Press. 5th edition. . Spellings of ''X-ray(s)'' in English include the variants ''x-ray(s)'', ''xray(s)'', and ''X ray(s)''. The most familiar use of X-rays is checking for fractures (broken bones), but X-rays are also used in other ways. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Owen Willans Richardson
Sir Owen Willans Richardson, FRS (26 April 1879 – 15 February 1959) was a British physicist who won the Nobel Prize in Physics in 1928 for his work on thermionic emission, which led to Richardson's law. Biography Richardson was born in Dewsbury, Yorkshire, England, the only son of Joshua Henry and Charlotte Maria Richardson. He was educated at Batley Grammar School and Trinity College, Cambridge, where he gained First Class Honours in Natural Sciences. He then got a DSc from University of London in 1904. After graduating in 1900, he began researching the emission of electricity from hot bodies at the Cavendish Laboratory in Cambridge, and in October 1902 he was made a fellow at Trinity. In 1901, he demonstrated that the current from a heated wire seemed to depend exponentially on the temperature of the wire with a mathematical form similar to the Arrhenius equation. This became known as Richardson's law: "If then the negative radiation is due to the corpuscles coming out of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrostatic Discharge
Electrostatic discharge (ESD) is a sudden and momentary flow of electric current between two electrically charged objects caused by contact, an short circuit, electrical short or dielectric breakdown. A buildup of static electricity can be caused by tribocharging or by electrostatic induction. The ESD occurs when differently-charged objects are brought close together or when the dielectric between them breaks down, often creating a visible electric spark, spark. ESD can create spectacular electric sparks (lightning, with the accompanying sound of thunder, is a large-scale ESD event), but also less dramatic forms which may be neither seen nor heard, yet still be large enough to cause damage to sensitive electronic devices. Electric sparks require a field strength above approximately 40 kV/cm in air, as notably occurs in lightning strikes. Other forms of ESD include corona discharge from sharp electrodes and brush discharge from blunt electrodes. ESD can cause harmful effects of imp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torahiko Terada
was a Japanese physicist and author who was born in Tokyo. He was a professor at Tokyo Imperial University, a researcher at RIKEN, and worked on a wide range of topics in physics. He was also a professor at the Earthquake Research Institute. As an author, he studied under Natsume Sōseki, who was a teacher at his high school in Kumamoto. His pseudonym for his literature-related work was Fuyuhiko Yoshimura. He is best known for his numerous essays on a wide variety of topics ranging from science to manga. Biography Torahiko Terada was born in 1878 in the Tokyo Kojimachi District. He was named "Torahiko" because he was born under the Year of the Tiger. While in high school in Kumamoto, the young Torahiko studied under Natsume Sōseki and science teacher Takuro Tamaru. It was the influence of both men whom Terada attributed his inspiration to seriously pursue studies of science and literature during the course of his life. In 1897, Terada met and courted student Natsuko Saka ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Experimental Physics
Experimental physics is the category of disciplines and sub-disciplines in the field of physics that are concerned with the observation of physical phenomena and experiments. Methods vary from discipline to discipline, from simple experiments and observations, such as Galileo's experiments, to more complicated ones, such as the Large Hadron Collider. Overview Experimental physics encompasses all the disciplines of physics that are concerned with data acquisition, data-acquisition methods, and the detailed conceptualization (beyond simple thought experiments) and realization of laboratory experiments. It is often contrasted with theoretical physics, which is more concerned with predicting and explaining the physical behaviour of nature than the acquisition of empirical data. Although experimental and theoretical physics are concerned with different aspects of nature, they both share the same goal of understanding it and have a symbiotic relationship. The former provides data a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Academic Major
An academic major is the academic discipline to which an undergraduate student formally commits. A student who successfully completes all courses required for the major qualifies for an undergraduate degree. The word ''major'' (also called ''concentration'', particularly at private colleges) is also sometimes used administratively to refer to the academic discipline pursued by a graduate student or postgraduate student in a master's or doctoral program. An academic major typically involves completion of a combination of required and elective courses in the chosen discipline. The latitude a student has in choosing courses varies from program to program. An academic major is administered by select faculty in an academic department. A major administered by more than one academic department is called an ''interdisciplinary major''. In some settings, students may be permitted to design their own major, subject to faculty approval. In the United States, students are usually not requir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hajime Tanabe
was a Japanese philosopher of science, particularly of mathematics and physics. In 1947 he became a member of the Japan Academy, and in 1950 he received the Order of Cultural Merit. Tanabe was a key member of what has become known in the West as the Kyoto School, alongside philosophers Kitaro Nishida and Keiji Nishitani. While the latter philosophers have received recognition in Western academia, Tanabe's writing has received less notice. Nishida, the figure who is considered the originator of this school, was Tanabe's teacher. Philosophers of this school received opprobrium for their perceived active role in the Japanese militarist regime. However, their participation in resistance to the political environment has been documented widely by James Heisig. Tanabe especially has fallen under scrutiny for his political activities, though scholarship provides some mitigation of the harsher stigma surrounding his career. Biography Tanabe was born on February 3, 1885 in Tokyo to a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pierre-Simon Laplace
Pierre-Simon, marquis de Laplace (; ; 23 March 1749 – 5 March 1827) was a French scholar and polymath whose work was important to the development of engineering, mathematics, statistics, physics, astronomy, and philosophy. He summarized and extended the work of his predecessors in his five-volume ''Mécanique céleste'' (''Celestial Mechanics'') (1799–1825). This work translated the geometric study of classical mechanics to one based on calculus, opening up a broader range of problems. In statistics, the Bayesian interpretation of probability was developed mainly by Laplace. Laplace formulated Laplace's equation, and pioneered the Laplace transform which appears in many branches of mathematical physics, a field that he took a leading role in forming. The Laplacian differential operator, widely used in mathematics, is also named after him. He restated and developed the nebular hypothesis of the origin of the Solar System and was one of the first scientists to sugges ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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