|
Vilho Väisälä
Vilho Väisälä (; September 28, 1889 – August 12, 1969) was a Finnish meteorologist and physicist, and founder of Vaisala Oyj. After graduation in mathematics in 1912, Väisälä worked for the Finnish Meteorological Institute in ''aerological measurements'', specializing in the research of the higher troposphere. At the time the measurements were conducted by attaching a thermograph to a kite. In 1917 he published his dissertation in mathematics ''Ensimmäisen lajin elliptisen integralin käänteisfunktion yksikäsitteisyys'' (The single-valuedness of the inverse function of the elliptic integral of the first kind). His dissertation was the first and still is the only mathematical doctoral thesis written in the Finnish language.Lehto, Olli: Oman tien kulkijat. Helsinki: Otava, 2004. . Page 101 Väisälä participated in development of radiosonde, a device attached to a balloon and launched to measure air in the higher atmosphere. In 1936 he started his own compan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helsinki
Helsinki () is the Capital city, capital and most populous List of cities and towns in Finland, city in Finland. It is on the shore of the Gulf of Finland and is the seat of southern Finland's Uusimaa region. About people live in the municipality, with million in the Helsinki capital region, capital region and million in the Helsinki metropolitan area, metropolitan area. As the most populous List of urban areas in Finland by population, urban area in Finland, it is the country's most significant centre for politics, education, finance, culture, and research. Helsinki is north of Tallinn, Estonia, east of Stockholm, Sweden, and west of Saint Petersburg, Russia. Helsinki has significant History of Helsinki, historical connections with these three cities. Together with the cities of Espoo, Vantaa and Kauniainen—and surrounding commuter towns, including the neighbouring municipality of Sipoo to the east—Helsinki forms a Helsinki metropolitan area, metropolitan are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yrjö Väisälä
Yrjö Väisälä (; 6 September 1891 – 21 July 1971) was a Finnish astronomer and physicist. His main contributions were in the field of optics. He was also active in geodetics, astronomy and optical metrology. He had an affectionate nickname of ''Wizard of Tuorla'' (Observatory/Optics laboratory), and a book with the same title in Finnish describes his works. His discoveries include 128 asteroids and 3 comets. His brothers were mathematician Kalle Väisälä (1893–1968) and meteorologist Vilho Väisälä (1889–1969). His daughter Marja Väisälä (1916–2011) was an astronomer and discoverer of minor planets. Väisälä was a fervent supporter of Esperanto, presiding over the ''Internacia Scienca Asocio Esperantista'' ("International Association of Esperanto Scientists") in 1968. Optician He developed several methods for measuring the quality of optical elements, as well as a lot of practical methods of manufacturing said elements. This allowed the construc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Finnish Esperantists
Finnish may refer to: * Something or someone from, or related to Finland * Culture of Finland * Finnish people or Finns, the primary ethnic group in Finland * Finnish language, the national language of the Finnish people * Finnish cuisine See also * Finish (other) * Finland (other) * Suomi (other) Suomi means ''Finland'' in Finnish. Suomi may also refer to: *Finnish language Finnish (endonym: or ) is a Finnic languages, Finnic language of the Uralic languages, Uralic language family, spoken by the majority of the population in Finla ... * {{disambiguation Language and nationality disambiguation pages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Academic Staff Of The University Of Helsinki
An academy (Attic Greek: Ἀκαδήμεια; Koine Greek Ἀκαδημία) is an institution of tertiary education. The name traces back to Plato's school of philosophy, founded approximately 386 BC at Akademia, a sanctuary of Athena, the goddess of wisdom and Skills, skill, north of Ancient Athens, Athens, Greece. The Royal Spanish Academy defines academy as scientific, literary or artistic society established with public authority and as a teaching establishment, public or private, of a professional, artistic, technical or simply practical nature. Etymology The word comes from the ''Academy'' in ancient Greece, which derives from the Athenian hero, ''Akademos''. Outside the city walls of Athens, the Gymnasium (ancient Greece), gymnasium was made famous by Plato as a center of learning. The sacred space, dedicated to the goddess of wisdom, Athena, had formerly been an olive Grove (nature), grove, hence the expression "the groves of Academe". In these gardens, the philos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Finnish Meteorologists
Finnish may refer to: * Something or someone from, or related to Finland * Culture of Finland * Finnish people or Finns, the primary ethnic group in Finland * Finnish language, the national language of the Finnish people * Finnish cuisine See also * Finish (other) * Finland (other) * Suomi (other) Suomi means ''Finland'' in Finnish. Suomi may also refer to: *Finnish language Finnish (endonym: or ) is a Finnic languages, Finnic language of the Uralic languages, Uralic language family, spoken by the majority of the population in Finla ... * {{disambiguation Language and nationality disambiguation pages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brunt–Väisälä Frequency
In atmospheric dynamics, oceanography, asteroseismology and geophysics, the Brunt–Väisälä frequency, or buoyancy frequency, is a measure of the stability of a fluid to vertical displacements such as those caused by convection. More precisely it is the frequency at which a vertically displaced parcel will oscillate within a statically stable environment. It is named after David Brunt and Vilho Väisälä. It can be used as a measure of atmospheric stratification. Derivation for a general fluid Consider a parcel of water or gas that has density \rho_0. This parcel is in an environment of other water or gas particles where the density of the environment is a function of height: \rho = \rho (z). If the parcel is displaced by a small vertical increment z', ''and it maintains its original density so that its volume does not change,'' it will be subject to an extra gravitational force against its surroundings of: \rho_0 \frac = - g \left rho (z)-\rho (z+z')\right/math> where g is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joensuu
Joensuu (; ; ) is a city in Finland and the regional capital of North Karelia. It is located in the eastern interior of the country and in the Finnish Lakeland. The population of Joensuu is approximately , while the sub-region has a population of approximately . It is the most populous municipality in Finland, and the ninth most populous urban area in the country. Joensuu was founded in 1848 by the Russian Emperor Nicholas I. The city is located on the northern shore of Lake Pyhäselkä, the northern part of Lake Saimaa, at the mouth of the River Pielinen. The nearest major city, Kuopio in North Savonia, is located to the west. From Joensuu, the distance to Lappeenranta, the capital of South Karelia, is along Highway 6. As is typical of cities in Eastern Finland, Joensuu is monolingually Finnish. Along with Kuopio, Joensuu is one of major urban, economic, and cultural hubs of Eastern Finland. Joensuu is a student city with a subsidiary of the University of Eastern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Congress Of Esperanto
The World Esperanto Congress (, UK) is an annual Esperanto convention. It has the longest tradition among international Esperanto conventions, with an almost unbroken run for 119 years. The congresses have been held since August 5, 1905, every year, except during World War I, World War II, and the COVID-19 pandemic. Since the 1920s, the Universal Esperanto Association has been organizing these congresses. These congresses take place every year and, over the 30 years from 1985 through 2014, have gathered an average of about 2,000 participants (since World War II it has varied from 800 to 6,000, depending on the venue). The average number of countries represented is about 60. Some specialized organizations also gather a few hundred participants in their annual meetings. The World Congress usually takes place in the last week of July or first week of August, beginning and ending on a Saturday (8 days in total). For many years ILERA has operated an amateur radio station during the con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Esperanto Movement
The Esperanto movement, less commonly referred to as Esperantism (), is a movement to disseminate the use of the planned international language Esperanto.See the definition in theDeklaracio pri la Esenco de la Esperantismo ("Bulonja Deklaracio", 1905) The movement does not aim to supplant national languages but merely to supplement them. The movement is sometimes used to describe all speakers of Esperanto including their culture. Politics Esperanto has been placed in a few proposed political situations. The most popular of these is the former minor party '' Europe–Democracy–Esperanto'', which aims to establish Esperanto as the official language of the European Union. Grin's Report, published in 2005 by François Grin found that the use of the English language as the ''lingua franca'' within the European Union costs billions annually and significantly benefits English-speaking countries The English-speaking world comprises the 88 countries and territories in which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Esperanto
Esperanto (, ) is the world's most widely spoken Constructed language, constructed international auxiliary language. Created by L. L. Zamenhof in 1887 to be 'the International Language' (), it is intended to be a universal second language for international communication. He described the language in ''Dr. Esperanto's International Language'' (), which he published under the pseudonym . Early adopters of the language liked the name and soon used it to describe his language. The word translates into English as 'one who hopes'. Within the range of constructed languages, Esperanto occupies a middle ground between "naturalistic" (imitating existing natural languages) and ''Constructed language#A priori and a posteriori languages, a priori'' (where features are not based on existing languages). Esperanto's vocabulary, syntax and semantics derive predominantly from languages of the Indo-European languages, Indo-European group. A substantial majority of its vocabulary (approximat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kalle Väisälä
Kalle is a masculine given name of North Germanic origin, a variation of Karl. In Sweden, people named Karl are commonly nicknamed Kalle. The name is also found in Finland and Estonia. Notable people with the name include: Given name *Kalle Anttila (1887–1975), Finnish freestyle and Greco-Roman wrestler and Olympic medalist *Kalle Bask (born 1982), Finnish sailor and Olympic competitor * Kalle Björklund (born 1953), Swedish footballer *Kalle Brink (born 1975), Swedish professional golfer * Kalle Coster (born 1982), Dutch sailor and Olympic medalist * Kalle Dalin (born 1975), Swedish orienteering competitor * Kalle Eerola (born 1983), Finnish professional football midfielder * Kalle Eller (1940–2023), Estonian poet, publisher, neopagan and writer * Kalle Grünthal (born 1960), Estonian politician *Kalle Hakala (1880-1947), Finnish politician *Kalle Havulinna (1924–2016), Finnish professional ice hockey player * Kalle Jalkanen (1907–1941), Finnish cross-country skier a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
