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Rydberg Lake
Rydberg may refer to: People *Gerda Rydberg (1858–1928), Swedish artist better known as Gerda Tirén *Jan Rydberg, (1923-2015), Swedish chemist who worked on nuclear chemistry and recycling at Chalmers University of Technology *Johannes Rydberg (1854–1919), Swedish physicist and deviser of the Rydberg formula *Kaisu-Mirjami Rydberg (1905–1959), Finnish journalist and politician *Per Axel Rydberg (1860–1931), Swedish-American botanist *Sam Rydberg (1885–1956), Swedish composer * Viktor Rydberg (1828–1895), Swedish author, poet, and mythographer *Viktor Crus Rydberg (1995—), Swedish ice hockey player Physics * Rydberg constant, a constant related to atomic spectra * Rydberg formula, a formula describing wavelengths * Rydberg atom, an excited atomic state *Rydberg molecule, an electronically excited chemical substance *Rydberg unit of energy (symbol Ry), derived from the Rydberg constant Places * Rydberg (crater) Rydberg is a lunar impact crater that is located on the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerda Tirén
Gerda Maria Tirén, née Rydberg (11 January 1858, Stockholm - 9 October 1928, Länna Parish, Uppland) was a Swedish painter and illustrator. She did landscapes from France and Sweden, children's portraits, and Genre art, genre scenes. Her illustrations were often featured in the magazine (Santa Claus). Biography Her father, Carl Henrik Rydberg (1820-1902) was a writer and journalist. Her mother, Emma (1820-1899), was the granddaughter of portrait painter and sculptor Jonas Forsslund. She studied at the Konstfack, Technical School in Stockholm and at the Royal Swedish Academy of Fine Arts. Thanks to a scholarship, she was able to study in Paris and at the artists' colony in Grez-sur-Loing. In 1884, she married the painter, Johan Tirén, who she had met in Paris; most likely at a private art academy operated by Edvard Perséus. They had four children: Nils Tirén, Nils and Stina Tirén, Stina, who also became artists, Karin (1887-1951) and Elisabet (1890-1937). Johan's younge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jan Rydberg
Jan Rydberg (1923–2015) was a Sweden, Swedish academic who spent much of his working life at Chalmers University of Technology. He was known for his work on solvent extraction which he did while working in the Nuclear Chemistry section at Chalmers. Education He obtained his masters (MS) in Stockholm in chemistry, physics, mathematics and psychology in 1947. The topic of his thesis was "Studies of complex formation by means of a liquid-liquid distribution method." and this was defended in Stockholm in 1955, this was a thesis on the Solvent Extraction of metals using acetylacetone. His first scientific paper was on the subject of the complexes formed from thorium and acetylacetonate anions. This work was done using short-lived radioactive thorium-234 obtained from uranium-238. At the solvent extraction conference (ISEC 2008) was awarded the “Carl Hanson Award” for his outstanding contribution to solvent extraction. He was one of the founding editors of the journal ''Solvent E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johannes Rydberg
Johannes (Janne) Robert Rydberg (; 8 November 1854 – 28 December 1919) was a Swedish physicist mainly known for devising the Rydberg formula, in 1888, which is used to describe the wavelengths of photons (of visible light and other electromagnetic radiation) emitted by changes in the energy level of an electron in a hydrogen atom. Biography Rydberg was born 8 November 1854 in Halmstad in southern Sweden, the only child of Sven Rydberg and Maria Anderson Rydberg. When he was 4 years old his father died, and the family was forced to live on a small income. In 1873 he graduated from Halmstads elementärläroverk, where he received high grades in maths and physics. Later that year he enrolled in Lund University, and two years later he was awarded his bachelor's degree. In 1879 he was awarded his Doctor of Philosophy with his dissertation "Konstruktioner af kägelsnitt i 3- och 4-punktskontakt". Rydberg began his career as an amanuensis in the institution. He became a docent i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kaisu-Mirjami Rydberg
Karin Aino Mirjami (Kaisu-Mirjami) Rydberg (April 27, 1905 in Mäntsälä – August 31, 1959 in Helsinki) was a Finnish journalist, writer and politician. Politically she began her career in the Social Democratic Party, but later joined the Communist Party. Rydberg used the aliases 'Karin Alm', 'Eino Jalas' and 'Utelias'. Biography She was born to Väinö Riippa and Iida Forsbacka. In 1931 she married Martti Rydberg. In 1939 Rydberg became a member of parliament as a sitting MP, Hannes Ryömä, died. In the parliament, she joined the splinter Socialist Parliamentary Group. As the other members of the Socialist Parliamentary Group, she was arrested and jailed in August 1941. Rydberg was freed on November 4, 1944. She was elected to parliament in the 1945 election, as a candidate of the Finnish People's Democratic League. In the spring the same year, she joined the Communist Party.Leppänen, Veli-Pekka. ''Ohranasta oppositioon. Kommunistit Helsingissä 1944–1951'' (SKP:n He ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Per Axel Rydberg
Per Axel Rydberg (July 6, 1860 – July 25, 1931) was a Swedish-born, American botanist who was the first curator of the New York Botanical Garden Herbarium. Biography Per Axel Rydberg was born in Odh, Västergötland, Sweden and emigrated to the United States in 1882. From 1884 to 1890, he taught mathematics at Luther Academy in Wahoo, Nebraska, while he studied at the University of Nebraska. He graduated from the University of Nebraska–Lincoln (B.S. in 1891) and (M.A. in 1895). He earned his graduate degree from Columbia University (Ph.D. in 1898). After he graduated, Rydberg received a commission from the United States Department of Agriculture to undertake a botanical exploration of western Nebraska. He received another one in 1892 to explore the Black Hills of South Dakota, and in 1893 he was in the Sand Hills, again in western Nebraska. During this time he continued to teach at the Luther Academy. In 1900 Rydberg conducted field work in southeast Colorado. In 1901 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sam Rydberg
Sam Hjalmar Rydberg (27 October 1885 – 25 March 1956) was a Swedish composer. Biography Sam Rydberg was born in Nyköping, Sweden, in 1885. He started as a military musician at age 13 as a drummer at the Södermanland Regiment. After that he became a part of the military band of the Svea Engineer Corps 1906-1935 and after 1928 as the head of the band. The instrument he played was soprano cornet. He composed many types of music but is most known for his marches. He is also the composer that has most marches that is official marches of regiments in the Swedish Armed Forces The Swedish Armed Forces ( sv, Försvarsmakten, "the Defense Force") is the government agency that forms the armed forces of Sweden, tasked with the defense of the country as well as with promoting Sweden's wider interests, supporting internati ... and is sometimes referred as ''the Swedish march king''. List of marches *''Avanti'' *''Avanti per Patria'' *''Defiladmarsch'' *Den svenske underofficer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viktor Rydberg
Abraham Viktor Rydberg (; 18 December 182821 September 1895) was a Swedish writer and a member of the Swedish Academy, 1877–1895. "Primarily a classical idealist", Viktor Rydberg has been described as "Sweden's last Romantic" and by 1859 was "generally regarded in the first rank of Swedish novelists." Biography Viktor Rydberg was of humble parentage. One biographer notes that: "He had a hard struggle to satisfy the thirst for learning which was a leading passion of his life, but he finally attained distinction in several fields of scholarship." He was the son of a soldier turned prison guard, Johan Rydberg, and a midwife, Hedvig Düker. Viktor Rydberg had two brothers and three sisters. In 1834 his mother died during a cholera epidemic. Her death broke the spirit of his father, who yielded to hypochondria and alcoholism, contributing towards his loss of employment and the family's apartment, forcing authorities to board young Viktor out to a series of foster homes, one of w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viktor Crus Rydberg
Victor Crus Rydberg (born March 21, 1995) is a Swedish ice hockey player. He is currently playing with the Kalmar HC of the Hockeyettan (Division.1). He previously played originally with Linköpings in the Swedish J20 SuperElit and Elitserien. Rydberg was selected by the New York Islanders in the 5th round (136th overall) of the 2013 NHL Entry Draft. Playing career He made his Elitserien debut playing with Linköpings HC during the 2012–13 Elitserien season. After his first major junior North American season in 2013–14 with the Plymouth Whalers of the Ontario Hockey League, Rydberg joined Islanders' affiliate, the Bridgeport Sound Tigers on an amateur try-out for the remainder of the year on March 31, 2014. At the conclusion of his major junior career with the Whalers, Cruc Rydberg returned to Sweden in signing with HockeyAllsvenskan club, HC Vita Hästen HC Vita Hästen is a Swedish hockey club, based in Norrköping, which was founded following the bankruptcy of a prev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rydberg Constant
In spectroscopy, the Rydberg constant, symbol R_\infty for heavy atoms or R_\text for hydrogen, named after the Swedish physicist Johannes Rydberg, is a physical constant relating to the electromagnetic spectra of an atom. The constant first arose as an empirical fitting parameter in the Rydberg formula for the hydrogen spectral series, but Niels Bohr later showed that its value could be calculated from more fundamental constants via his Bohr model. Before the redefinition of the SI base units in , R_\infty and the electron spin ''g''-factor were the most accurately measured physical constants. The constant is expressed for either hydrogen as R_\text, or at the limit of infinite nuclear mass as R_\infty. In either case, the constant is used to express the limiting value of the highest wavenumber (inverse wavelength) of any photon that can be emitted from an atom, or, alternatively, the wavenumber of the lowest-energy photon capable of ionizing an atom from its ground state. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rydberg Formula
In atomic physics, the Rydberg formula calculates the wavelengths of a spectral line in many chemical elements. The formula was primarily presented as a generalization of the Balmer series for all atomic electron transitions of hydrogen. It was first empirically stated in 1888 by the Swedish physicist Johannes Rydberg, then theoretically by Niels Bohr in 1913, who used a primitive form of quantum mechanics. The formula directly generalizes the equations used to calculate the wavelengths of the hydrogen spectral series. History In 1880, Rydberg worked on a formula describing the relation between the wavelengths in spectral lines of alkali metals. He noticed that lines came in series and he found that he could simplify his calculations using the wavenumber (the number of waves occupying the unit length, equal to 1/''λ'', the inverse of the wavelength) as his unit of measurement. He plotted the wavenumbers (''n'') of successive lines in each series against consecutive integers w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rydberg Atom
A Rydberg atom is an excited atom with one or more electrons that have a very high principal quantum number, ''n''. The higher the value of ''n'', the farther the electron is from the nucleus, on average. Rydberg atoms have a number of peculiar properties including an exaggerated response to electric and magnetic fields, long decay periods and electron wavefunctions that approximate, under some conditions, classical orbits of electrons about the nuclei. The core electrons shield the outer electron from the electric field of the nucleus such that, from a distance, the electric potential looks identical to that experienced by the electron in a hydrogen atom. In spite of its shortcomings, the Bohr model of the atom is useful in explaining these properties. Classically, an electron in a circular orbit of radius ''r'', about a hydrogen nucleus of charge +'' e'', obeys Newton's second law: : \mathbf=m\mathbf \Rightarrow = where ''k'' = 1/(4π ε0). Orbital momentum is quantiz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rydberg Molecule
A Rydberg molecule is an electronically excited chemical species. Electronically excited molecular states are generally quite different in character from electronically excited atomic states. However, particularly for highly electronically excited molecular systems, the ionic core interaction with an excited electron can take on the general aspects of the interaction between the proton and the electron in the hydrogen atom. The spectroscopic assignment of these states follows the Rydberg formula, named after the Swedish physicist Johannes Rydberg, and they are called Rydberg states of molecules. Rydberg series are associated with partially removing an electron from the ionic core. Each Rydberg series of energies converges on an ionization energy threshold associated with a particular ionic core configuration. These quantized Rydberg energy levels can be associated with the quasiclassical Bohr atomic picture. The closer you get to the ionization threshold energy, the higher the prin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
