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Topic: Johannes Rydberg

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In the News (Sun 18 Aug 19)

  AllRefer.com - Johannes Robert Rydberg (Physics, Biography) - Encyclopedia
Johannes Robert Rydberg[yOO´hAnus rO´burt rUd´beryu] Pronunciation Key, 1854–1919, Swedish physicist.
Rydberg was a professor at Lund from 1901 to 1919.
Rydberg also wrote on the structure of the periodic table of the elements.
reference.allrefer.com /encyclopedia/R/RydbergJ.html   (180 words)

 Geometry.Net - Scientists: Rydberg Johannes
Johannes attended school in Halmstad which is in southwestern Sweden, on the eastern shore of the Kattegat, at the mouth of Nissan River.
Johannes Rydberg studied at Lund and wrote a dissertationon conic sections for his doctorate in mathematics in 1879.
Rydberg's most important work is on spectroscopy where he found a relatively simple expression relating the various lines in the spectra of the elements (1890).
www.geometry.net /scientists/rydberg_johannes.php   (1200 words)

 [No title]
Rydberg atoms occur in nature, but are delicate - a small disturbance can tear the distant electron from its orbit and leave behind the positively charged rump of the atom (ion).
The Rydberg electron is allowed tocontinue to absorb energy, so long as that energy is precisely of an amount that wil propel the electron to the next trajectory allowed by the interference pattern.
At low energies the orbits of Rydberg electrons are simple and predictable as the ellipses of the Bohr model, but as the energy increases the motion becomes more agitated, classical chaos suddenly sets in.
interzone.com /~cheung/SciNew.dir/Discover11.95.html   (2536 words)

 Johannes Robert Rydberg   (Site not responding. Last check: 2007-10-21)
johannes johannes brahms robert robert johnson robert jordan robert lenkiewicz robert louis robert mcneel robert mitchum robert iler robert hooke robert welch robert herder
Clara Schumann and Johannes Brahms The relationship between the widow of Robert Schumann and the bachelor is explored through a creative writing assignment.
Johannes Brahms (Austria) Herkunft und Kindheit, Konzertreisen, Kontakte zu Wagner, Clara und Robert Schumann, Klavierwerke, Sinfonien und Liedwerke, Wiener Jahre und Freundeskreis um Eduard Hanslick.
www.serebella.com /encyclopedia/article-Johannes_Robert_Rydberg.html   (312 words)

 Johannes Robert Rydberg Biography / Biography of Johannes Robert Rydberg World of Physics Biography
Johannes Rydberg was a Swedish physicist noted for his work in spectroscopy.
Rydberg's most important scientific contribution stemmed from his interest in understanding the periodic system of elements.
Rydberg's work also provided the foundation for the development of the structure theory of the atom.
www.bookrags.com /biography-johannes-robert-rydberg-wop   (347 words)

 Rydberg, Johannes Robert   (Site not responding. Last check: 2007-10-21)
Educated at the University of Lund, Rydberg received his bachelor's degree in 1875 and his doctorate in mathematics in 1879.
Rydberg is best known for his theoretical studies of spectral series.
Using wave numbers instead of wavelengths in his calculations, he was able to arrive at a relatively simple expression that related the various lines in the spectra of chemical elements.
www.phy.bg.ac.yu /web_projects/giants/rydberg.htm   (178 words)

 Rydberg, Johannes Robert   (Site not responding. Last check: 2007-10-21)
Rydberg began by classifying spectral lines into three types: principal (strong, persistent lines), sharp (weaker but well-defined lines), and diffuse (broader lines).
The formula expresses the wave number in terms of a constant common to all series (the Rydberg constant), two constants that are characteristic of the particular series, and an integer.
Rydberg then went on to produce another formula, which would express the frequency of every line in every series of an element.
cartage.org.lb /en/themes/Biographies/MainBiographies/R/Rydberg/1.html   (186 words)

 Johannes Robert Rydberg - spektroskopie | životopis
Rydberg zde získal v roce 1875 titul bakaláře.
V roce 1880 byl Johannes Robert Rydberg jmenován přednášejícím matematiky na univerzitě v Lundu.
V roce 1882 začal Johannes Robert Rydberg přednášet na univerzitě v Lundu fyziku.
www.converter.cz /fyzici/rydberg.htm   (178 words)

 Rydberg Constant History Summary   (Site not responding. Last check: 2007-10-21)
From this observation he was able to formulate the Rydberg equation, E = -R /(n-m)[sup2 ] where E is the energy of the line in wave numbers, R is the Rydberg constant, n is the principle quantum number and m is the quantum defect.
The quantum defect describes how much the Rydberg series departs from the behavior of the Rydberg states of atomic hydrogen and is directly related to the interaction of the excited electron with the leftover ion core.
The Rydberg series is a set of bound states of the excited electron for a given set of excited electron angular momentum quantum numbers and ion core state.
www.bookrags.com /history/physics/rydberg-constant-wop   (403 words)

 ► Rydberg formula: Encyclopedia topic   (Site not responding. Last check: 2007-10-21)
The fomula was invented by the Swedish physicist (physicist: A scientist trained in physics) Janne Rydberg (Janne Rydberg: johannes rydberg, commonly known as janne rydberg, (november 8, 1854 - december...
is the Rydberg constant (Rydberg constant: A wave number characteristic of the wave spectrum of each element) for hydrogen (hydrogen: A nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe).
By setting to 1 and letting run from 2 to infinity, the spectral lines known as the Lyman series (Lyman series: the lyman series is the series of transitions and resulting emission lines of the hydrogen...
www.absoluteastronomy.com /reference/rydberg_formula   (475 words)

 ► Johannes Rydberg: bio and encyclopedia article   (Site not responding. Last check: 2007-10-21)
[follow hyperlink for more...]), are called Rydberg atom (Rydberg atom: more facts about this subject) s, and a crater (crater: A bowl-shaped depression formed by the impact of a meteorite or bomb) on the moon is also named Rydberg in his honour.
Rydberg formula (Rydberg formula: the rydberg formula (rydberg-ritz formula) is used in atomic physics for determining...
Rydberg constant (Rydberg constant: A wave number characteristic of the wave spectrum of each element)
www.absoluteastronomy.com /reference/johannes_rydberg   (200 words)

 Learn more about Johannes Rydberg in the online encyclopedia.   (Site not responding. Last check: 2007-10-21)
Learn more about Johannes Rydberg in the online encyclopedia.
The physical constant known as the Rydberg constant is named after him, and a crater on the moon is also named Rydberg in his honour.
Rydberg formula, Rydberg constant, List of Swedish scientists''
www.onlineencyclopedia.org /j/jo/johannes_rydberg.html   (193 words)

 Blistering.com Review: Cult Of Luna - Salvation   (Site not responding. Last check: 2007-10-21)
Umeå’s (Sweden) experimental metal act Cult Of Luna have returned with the follow up to their highly acclaimed sophomore effort The Beyond from 2003 (Which followed their self titled debut in 2001), and while the overall identity of the group revealed on their two previous releases remains the same, there’s also some subtle changes too.
Beginning with gentle keyboards and atmospheric guitar notes, this slow building number gently builds and rises up in heaviness before introducing tribal rhymed drums and a groove that is clearly audible without the unnecessary extras of times past.
Rydberg’s vocals were always a bit buried under the music in past releases, but for the first time he can be heard clearly, while the multi layered riffing has been stripped back to it’s bare minimum.
www.blistering.com /fastpage/fpengine.php/link/1/templateid/7977/tempidx/4/menuid/2   (356 words)

 Johannes Robert Rydberg --  Britannica Concise Encyclopedia - The online encyclopedia you can trust!
Swedish physicist for whom the Rydberg constant in spectroscopy is named.
Danish pathologist Johannes Andreas Grib Fibiger was born in Silkeborg, Denmark.
One of the greatest 17th-century Dutch painters, Johannes Vermeer is known for his light-drenched genre pictures—scenes from everyday life.
www.britannica.com /ebc/article-9064544   (813 words)

 Geometry.Net - Scientists: Rydberg Johannes
Johannes Rydberg 's father was Sven Rydberg while his mother was Maria Anderson.
Johannes Rydberg studied at Lund and wrote a dissertation on conic sections for his doctorate in mathematics in 1879.
N Bohr, Rydberg's discovery of the spectral laws, in Proceedings of the Rydberg Centennial Conference on Atomic Spectroscopy, Acta Universitatis lundensis
www.geometry.net /detail/scientists/rydberg_johannes.html   (1443 words)

 Rydberg Constant History Summary   (Site not responding. Last check: 2007-10-21)
Ordinary atomic optical spectra suggest that the motion of the electrons in the outer part of an atom depend as much on the interactions between the electrons as on the attractive forces between the electrons and the atomic nucleus, both forces being of about the same magnitude.
In 1890, the Swedish spectroscopist Johannes Rydberg (1854- 1919) identified a general relationship between the spectra of hydrogen and those of many other atoms.
Because Rydberg's formula includes a term characteristic of the hydrogen spectra, the formula has been interpreted to mean that the spectra that obey it are representative of the last step of a process by which a neutral atom is built up by capturing and binding electrons to a nucleus, one at a time.
www.bookrags.com /history/chemistry/rydberg-constant-woc   (381 words)

 Balmer-Serie - Wikipedia
Bereits 1890 verallgemeinerte Johannes Rydberg die Formel von Balmer zur Rydberg-Formel :
Die Formel von Rydberg beschreibt das Wasserstoffspektrum recht genau.
Jedoch bei den meisten anderen Atomen liefert sie keine korrekten Ergebnisse.
de.wikipedia.org /wiki/Balmer-Serie   (694 words)

 Molecular Rydberg Dynamics   (Site not responding. Last check: 2007-10-21)
A simple theory relating the dynamics of [Rydberg] electrons to the long-range properties of the [Rydberg] molecular ionic core is developed for asymmetric top molecules in general and water in particular.
The effect of resonances between electronic and rotational motion in Rydberg molecules is investigated using multichannel quantum defect theory with special reference to the time-resolved wave packet experiments of Smith et al.
Johannes Rydberg of Halmstad, (scientist, 1854 to 1919, biography presented online by the University of St Andrews), not Viktor Rydberg of Jönköping (writer, 1828 to 1895).
www.tantallon.org.uk /thesis.html   (220 words)

 Johannes Rydberg - Bedeutung, Definition, Erklärung im netlexikon
Dezember 1919 in Lund) auch bekannt als Janne Rydberg, war ein schwedischer Physiker und ist hauptsächlich bekannt für die Aufstellung der Rydberg-Formel.
Sie gibt die Wellenlänge von elektromagnetischer Strahlung an, die ein Elektron in einem Atom beim Übergang zwischen zwei Energieniveaus emittiert.
Literatur von und über Johannes Rydberg im Katalog der DDB
www.lexikon-definition.de /Johannes-Rydberg.html   (132 words)

 Atomic Spectra
The purpose of this experiment is to experimentally determine the values of the wavelengths of light in the visible region of the hydrogen spectrum and calculate the values of n in the Rydberg equation for each of these spectral lines.
The first mathematical formulation of the hydrogen series was given in 1885 by Johann Balmer, a high school teacher in Basel, Switzerland.
This Rydberg equation corresponds to transitions in the Bohr atom model of
www.sonoma.edu /chemistry/chem115A/atomicspectra.html   (1029 words)

 Telegraph | Connected | A giant molecule stuns the scientists
These are called "butterfly Rydberg states", where butterfly refers to the shape and state refers to the way electrons are distributed around an atom or molecule.
Rydberg acknowledges pioneering work in the late 1800s by Johannes Rydberg that helped in the development of quantum mechanics.
This image shows the likelihood of finding an electron in orbit around the molecule (the peaks correspond to where it is most likely to be), calculated by the most successful theory in science, quantum mechanics.
www.telegraph.co.uk /connected/main.jhtml?view=DETAILS&grid=P8&targetRule=10&xml=/connected/2002/10/31/ecfmole31.xml&secureRefresh=true&_requestid=322902   (634 words)

 Johannes Rydberg - Definition up Erdmond.Com   (Site not responding. Last check: 2007-10-21)
, commonly known as ''Janne Rydberg'', (November_8, 1854 - December_28, 1919), was a Swedish physicist mainly known for devising the Rydberg_formula, which is used to predict the wavelengths of photons (of light and other electromagnetic_radiation) emitted by changes in the energy level of an electron in an atom.
The physical_constant known as the Rydberg_constant is named after him.
Excited atoms with very high values of the principal_quantum_number, represented by n in the Rydberg_formula, are called Rydberg_atoms, and a crater on the moon is also named ''Rydberg'' in his honour.
www.erdmond.com /Johannes_Rydberg.html   (142 words)

 spectral line series --  Britannica Concise Encyclopedia - Your gateway to all Britannica has to offer!
Johann Balmer, a Swiss mathematician, discovered (1885) that the wavelengths of the visible hydrogen lines can be expressed by a simple formula: the reciprocal wavelength (1/
The constant R is known as the Rydberg constant, after Johannes Robert Rydberg, a Swedish physicist, and, in the case of hydrogen, has a value of 109,677.58 reciprocal centimetres.
The value of this constant is based on the premise that the nucleus of the atom emitting light is...
concise.britannica.com /ebc/article-9069036   (1090 words)

 Rydberg constant - Art History Online Reference and Guide
Each chemical element has its own Rydberg constant, but most commonly referred to is the "infinity" constant.
Which gives the Rydberg constant for a certain atom with one electron with the rest mass
Measuring the Rydberg constant namely confirms the proportions of the values of the other five constants.
www.arthistoryclub.com /art_history/Rydberg_constant   (170 words)

 Quantum Chaos
Rydberg atoms inhabit the middle ground between the quantum and the classical worlds, and they are therefore ideal candidates for exploring Bohr's correspondence principle which connects boxes Q (quantum phenomena) and R (classic phenomenal.
If a Rydberg atom could be made to exhibit chaotic behavior in the classical sense, it might provide a clue as to the nature of quantum chaos and thereby shed light on the middle ground between boxes Q and P (chaotic phenomena.
Normally, an atom's energy levels are spaced at mathematically regular intervals, accounted for by aii empirical formula given 19th cent physicist Johannes Rydberg.
www.dhushara.com /book/quantcos/qchao/quantc.htm   (7426 words)

 Discover: The philosopher's atom - outer electron in Rydberg atoms exhibits both classical and quantum-mechanical ...
The focus of their attention has been a class of objects known as Rydberg atoms, named after nineteenth-century Swedish physicist Johannes Robert Rydberg.
The first hint of the way in which Rydberg atoms can mediate between the classical and quantum worlds appeared unexpectedly in 1969.
Frank Tomkins and William Garton at the Argonne National Laboratory near Chicago were investigating how light is absorbed as it shines through a bottle of barium gas.
findarticles.com /p/articles/mi_m1511/is_n11_v16/ai_17643255   (1449 words)

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