1. Johann Jakob Balmer Johann Jakob balmer johann Jakob Balmer wurde am 1.Mai 1825 in Lausen im Baselland geboren. Er starb am 12.März 1898 in Basel. http://www.chemie.uni-bremen.de/stohrer/biograph/balmer.htm

Johann Jakob Balmer Niels Bohr

2. Johann Jakob Balmer - Encyclopedia Article From Britannica.com Johann Jakob Balmer b. May 1, 1825, Lausanne, Switz. d. March 12, 1898, Basel Swiss mathematician who discovered a formula basic to the development of atomic theory and the field of atomic spectroscopy. Search Johann Jakob Balmer at Britannica.com for the Web's best sites, news and magazine articles, and related products. http://www.britannica.com/seo/j/johann-jakob-balmer

Search Johann Jakob Balmer at Britannica.com for the Web's best sites, news and magazine articles, and related products. To view the complete article, sign up for Britannica's premium service - Balmer, Johann Jakob b. May 1, 1825, Lausanne, Switz. d. March 12, 1898, Basel Swiss mathematician who discovered a formula basic to the development of atomic theory and the field of atomic spectroscopy. A secondary-school teacher in Basel from 1859 until his death, Balmer also lectured (1865-90) on geometry at the University of Basel. In 1885 he announced Need more? Complete articles are available to premium service members. Information on site licenses is also available. About Us Advertise With Us Syndication International Publishing ... Help

3. Johann Jakob Balmer Johann Jakob Balmer. Born 1 May 1825 Johann Balmer's doctorate fromBasel was for a dissertation on the cycloid. He taught in Basel http://physics.rug.ac.be/Fysica/Geschiedenis/Mathematicians/Balmer.html

Johann Jakob Balmer Born: 1 May 1825 in Lausanne, Basel-Land, Switzerland Died: 12 March 1898 in Basel, Switzerland Johann Balmer 's doctorate from Basel was for a dissertation on the cycloid. He taught in Basel all his life both as a school teacher and as a university lecturer at the University of Basel. His main field of interest was geometry. However Balmer is best remembered for his work on spectral series and his formula, given in 1885, for the wavelengths of the spectral lines of the hydrogen atom. The reason why the formula holds was not understood until the work of Niels Bohr in 1913. Bron: http://www-history.mcs.st-andrews.ac.uk/history/Mathematicians/Balmer.html

4. Balmer Johann Jakob Balmer. Johann Balmer's father was also named Johann Jakob Balmerand he was a Chief Justice. Johann's mother was Elizabeth Rolle Balmer. http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Balmer.html

Johann Jakob Balmer Born: 1 May 1825 in Lausen, Basel-Land, Switzerland Died: 12 March 1898 in Basel, Switzerland Click the picture above to see a larger version Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Johann Balmer 's father was also named Johann Jakob Balmer and he was a Chief Justice. Johann's mother was Elizabeth Rolle Balmer. Johann was the eldest of his parents sons. He attended his first school in Liestal, a town which had just became the capital of the half canton of Basel-Landschaft. Then, for his secondary education, he studied at a school in Basel where he excelled in mathematics and decided to study that topic at university. For his university studies in mathematics Balmer attended the University of Karlsruhe and the University of Berlin. His course of studies led to a doctorate which he received from the University of Basel in 1849 for a dissertation on the cycloid. Balmer taught in Basel all his life. From 1859 until his death in 1898 he was a school teacher of mathematics at a secondary school for girls in the city. From 1865 until 1890 he was also a university lecturer in mathematics at the University of Basel where his main field of interest was geometry. He married Christine Pauline Rinck in 1868 when he was 43 years old and they had six children. However, despite being a mathematics teacher and lecturer all his life, Balmer is best remembered for his work on spectral series and his formula, given in 1885, for the wavelengths of the spectral lines of the hydrogen atom. This was set out in one of only two papers which he wrote on spectra of the elements, the second being in 1897. It is surprising to realise that Balmer was sixty years old when he wrote the paper for which he is famous on the spectral lines of the hydrogen atom and that he was seventy-two when he wrote his only other work on this topic. But for his work on what amounts to a problem in physics, Balmer would be unknown today within the history of mathematics since he made no contribution to geometry of special significance despite it being the topic of interest throughout his life.

5. Johann Jacob Balmer Johann Jacob Balmer (18251898) Note on the Spectral Lines of Hydrogen Annalen der Physik und Chemie 25, 80-5 (1885) as translated and published by Henry A. Boorse Lloyd Motz, The World of the Atom, Vol. http://maple.lemoyne.edu/faculty/giunta/balmer.html

Johann Jacob Balmer (1825-1898) Note on the Spectral Lines of Hydrogen Annalen der Physik und Chemie The World of the Atom, Vol. 1 (New York: Basic Books, 1966) with omissions filled in by Carmen Giunta] We may call this number the fundamental number of hydrogen; and if corresponding fundamental numbers can be found for the spectral lines of other elements, we may accept the hypothesis that relations which can be expressed by some function exist between these fundamental numbers and the corresponding atomic weights. The wavelengths of the first four hydrogen lines are obtained by multiplying the fundamental number h = 3645.6 in succession by the coefficients 9/5; 4/3; 25/21; and 9/8. At first it appears that these four coefficients do not form a regular series; but if we multiply the numerators in the second and the fourth terms by 4 a consistent regularity is evident and the coefficients have for numerators the numbers 3 and for denominators a number that is less by 4. For several reasons it seems to me probable that the four coefficients which have just been given belong to two series, so that the second series includes the terms of the first series; hence I have finally arrived at the present formula for the coefficients in the more general form: m /(m -n ) in which m and n are whole numbers.

6. Famous Chemists Johann Jakob balmer johann Balmer was born May 1, 1825 and he died on March 12, 1898. Johann Balmer's father was also named Johann Jakob Balmer and he was a Chief Justice. Johann's mother was Elizabeth Rolle Balmer. http://www.sanbenito.k12.tx.us/district/webpages2002/judymedrano/famous%20chemis

Famous Chemists Johann Jakob Balmer Johann Balmer was born May 1, 1825 and he died on March 12, 1898. Johann Balmer's father was also named Johann Jakob Balmer and he was a Chief Justice. Johann's mother was Elizabeth Rolle Balmer. Johann was the eldest of his parent's sons. He attended his first school in Liestal, a town which had just became the capital of the half canton of Basel-Landschaft. He married Christine Pauline Rinck in 1868 when he was 43 years old and they had six children. Balmer is best remembered for his work on spectral series and his formula, given in 1885, for the wavelengths of the spectral lines of the hydrogen atom. This was set out in one of only two papers which he wrote on spectra of the elements, the second being in 1897. It is surprising to realize that Balmer was sixty years old when he wrote the paper for which he is famous on the spectral lines of the hydrogen atom and that he was seventy-two when he wrote his only other work on this topic. Balmer's famous formula is hm m n In his paper in 1885 Balmer suggested that giving n other small integer values would give the wavelengths of other series produced by the hydrogen atom. Indeed this prediction turned out to be correct and these series of lines were later observed. The reason why the formula holds was not understood in Balmer's lifetime and had to wait until the theoretical work of Niels Bohr in 1913.

7. Johann Jacob Balmer Johann Jacob Balmer (18251898). Note on the Spectral Lines of Hydrogen.Annalen der Physik und Chemie 25, 80-5 (1885) as translated http://webserver.lemoyne.edu/faculty/giunta/balmer.html

Johann Jacob Balmer (1825-1898) Note on the Spectral Lines of Hydrogen Annalen der Physik und Chemie The World of the Atom, Vol. 1 (New York: Basic Books, 1966) with omissions filled in by Carmen Giunta] We may call this number the fundamental number of hydrogen; and if corresponding fundamental numbers can be found for the spectral lines of other elements, we may accept the hypothesis that relations which can be expressed by some function exist between these fundamental numbers and the corresponding atomic weights. The wavelengths of the first four hydrogen lines are obtained by multiplying the fundamental number h = 3645.6 in succession by the coefficients 9/5; 4/3; 25/21; and 9/8. At first it appears that these four coefficients do not form a regular series; but if we multiply the numerators in the second and the fourth terms by 4 a consistent regularity is evident and the coefficients have for numerators the numbers 3 and for denominators a number that is less by 4. For several reasons it seems to me probable that the four coefficients which have just been given belong to two series, so that the second series includes the terms of the first series; hence I have finally arrived at the present formula for the coefficients in the more general form: m /(m -n ) in which m and n are whole numbers.

8. Famous People Luis Ampère André Maria Anderson Carl Anderson Philip Ångström Anders AppletonEdward Archimédes Aristoteles Avogadro Amedeo, balmer johann Bardeen John http://www.aldebaran.cz/famous/list_abc.html

A B C Adams John Airy George Alferov Zhores Alfven Hannes ... Odkazy

9. Johann Jakob Balmer Johann Jakob Balmer (1825 1898) Balmer's doctorate from Basel wasfor a dissertation on the cycloid. He taught in Basel all his http://gifted.kaist.ac.kr:7777/html/internet/echide/science/www.kcsnet.or.kr/edu

Johann Jakob Balmer (1825 - 1898) Balmer's doctorate from Basel was for a dissertation on the cycloid. He taught in Basel all his life both as a school teacher and as a university lecturer at the University of Basel. His main field of interest was geometry. However Balmer is best remembered for his work on spectral series and his formula, given in 1885, for the wavelengths of the spectral lines of the hydrogen atom. The reason why the formula holds was not understood until the work of Niels Bohr in 1913. Back to the famous scientist list

10. Mathematiker Mit Bb Translate this page B. Itsfine-Profi Bannerexchange Itsfine-Profi Bannerexchange. balmer johannJakob (1825 - 1898, Lausanne). Banach Stefan (1892 - 1945, Lwów). http://homepages.compuserve.de/thweidenfeller/mathematiker/b.html

B Balmer Johann Jakob (1825 - 1898, Lausanne) Banach Stefan (1892 - 1945, Lwów) Barbier Joseph Emile (1839 - 1889, St Hilare-Cotter) Bernoulli Jakob (1654 - 1705, Basel) ... zurück

11. Physiciens De A à Z Translate this page 1, balmer johann (Bâle) 1825-1898. Il recherche les formules mathématiques quidécrivent le mieux les spectres lumineux émis par les décharges gazeuses. http://www.ifrance.com/scientix/pages/B.htm

Aurélie 03/2000 tout public A C D E ... G l est la longueur d'onde ( m); R une constante qui s'appellera plus tard la constante de Rydberg n un nombre entier. Raies de Balmer retour Barkla Charles (Edimbourg) 1877-1944 prix Nobel de physique en 1917 retour Barlow Peter (Londres) 1776-1862 roue de Barlow retour Becquerel Henri (Paris) 1852-1908 Le Becquerel Bell Alexander (Edimbourg) 1847- 1942 Il permet de calculer la vitesse du fluide en fonction de la pression. retour Biot Jean Baptiste (Paris) 1774-1862 loi de Biot et Savart retour Bode Johann (Berlin) 1747-1826 loi de Titius-Bode retour Bohr Niels (Copenhague) 1885-1962 prix Nobel de physique en 1922 atomes de Bohr p retour Boltzmann Ludwick (Vienne) 1844-1906 constante de Boltzmann Une mole de gaz parfait contient N (n bre JK loi de distribution de Maxwell-Boltzmann N i i retour relation de Bragg n l =2d sin( q l est la longueur d'onde des RX d : distance entre deux plans atomiques dans un cristal q n nombre entier retour

12. Premi Nobel Per La Chimica balmer johann Jakob;Bequerel Henri Antoine; Bequerel Henri Antoine; Bergius Friedrich; http://www.itchiavari.org/chimica/tabelle/biografie.html

Biografie di Chimici Alder Kurt Anfinsen Christian B Arrhenius Svante August Aston Francis William ... Home Page Istituto tecnico statale commerciale e per geometri di Chiavari (Genova - Italia)

13. Virtual Encyclopedia Of Mathematics paul gustav heinrich backus john bacon roger baer reinhold baire renélouis bakerhenry frederick ball walter william rouse balmer johann jakob banach stefan http://www.lacim.uqam.ca/~plouffe/Simon/supermath.html

Super-Index of Biographies of Mathematicians abel niels henrik abraham bar hiyya ha-nasi abraham max abu kamil shuja ibn aslam ibn muhammad ... zygmund antoni This index was automatically generated using a new tagging program written by Simon Plouffe at LaCIM

14. Science Center Virtuale - Ae Translate this page Balmer, Johann Jakob balmer johann Jakob Balmer (1825-1898), fisico sperimentaleautore di importanti lavori nel campo della spettroscopia. http://www.torinoscienza.it/personaggi/ae

il progetto promotori redazione architettura ... recensioni personaggi parole cronologie dossier sperimentare ... attiva chi siamo approfondimenti divertirsi esplora La vita e le opere di alcuni tra i personaggi storici che hanno influenzato lo sviluppo della scienza e della tecnologia. Abbott Edwin Abbott Abbott Agnesi Maria Gaetana Agnesi Matematica milanese (1718-1799), si occup² di analisi matematica e di geometria. Amaldi Edoardo Amaldi Fisico italiano (1908-1989) Amp¨re Andr© Marie Amp¨re Andr© Maria Amp¨re (1775-1836), fisico francese, scopritore di molte propriet  dei campi elettrici e magnetici. Antinori Severino Antinori Il medico italiano che vuole realizzare la clonazione umana Arrhenius Svante Arrhenius Chimico-Fisico Balmer Johann Jakob Balmer Johann Jakob Balmer (1825-1898), fisico sperimentale autore di importanti lavori nel campo della spettroscopia. Bethe Hans Albrecht Bethe Hans Albrecht Bethe (1906-), il fisico teorico al quale dobbiamo la spiegazione del funzionamento del Sole come fonte di energia. Bohr Niels Bohr Niels Bohr (1885-1962), fisico teorico danese creatore della scuola di Copenhagen.

15. References For Balmer References for johann balmer. Biography in Dictionary of Scientific Biography (NewYork 19701990). Articles H balmer, johann Jakob balmer 1. Mai 1825 bis 12. http://www-gap.dcs.st-and.ac.uk/~history/References/Balmer.html

References for Johann Balmer Biography in Dictionary of Scientific Biography (New York 1970-1990). Biography in Encyclopaedia Britannica. Articles: Elem. Math. L Hartmann, Johann Jakob Balmer, Main index Birthplace Maps Biographies Index History Topics ... Anniversaries for the year JOC/EFR July 2000 School of Mathematics and Statistics University of St Andrews, Scotland The URL of this page is: http://www-history.mcs.st-andrews.ac.uk/history/References/Balmer.html

16. Balmer, Johann Jakob Translate this page 28/11/02 No 4. balmer, johann Jakob. 1.5.1825 Lausen, 12.3.1898 Basel,ref., von Lausen und Basel. Sohn des johann Jakob, Landwirts http://www.snl.ch/dhs/externe/protect/textes/D28774.html

Balmer, Johann Christoph Balmer, Josef Anton No 4 Balmer, Johann Jakob 1.5.1825 Lausen, 12.3.1898 Basel, ref., von Lausen und Basel. Sohn des Johann Jakob, Landwirts, Ziegeleibesitzers und Oberrichters. Bruder des Johann Christoph ( -> No 3 /(m - n Archive -UBB, Nachlass Literatur NDB 1, 565 f. -H. Balmer, «Johann Jakob B.», in Elemente der Mathematik 16, 1961, 49-60 -L. Banet, «Balmer's Manuscripts and the Construction of his Series», in American Journal of Physics 38, 1970, 821-828 DSB 1, 425 f. -H. Reis, 100 Jahre Balmerformel, 1985 Peter Diehl Alle Urheberrechte dieser elektronischen Publikation sind beim Historischen Lexikon der Schweiz, Bern. Für alle elektronisch publizierten Texte gelten dieselben Regeln wie für eine gedruckte Veröffentlichung. Balmer, Johann Christoph Balmer, Josef Anton

17. Balmer Biography of johann balmer (18251898) johann's mother was Elizabeth Rolle balmer. johann was the eldest of his parents sons. http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Balmer.html

Johann Jakob Balmer Born: 1 May 1825 in Lausen, Basel-Land, Switzerland Died: 12 March 1898 in Basel, Switzerland Click the picture above to see a larger version Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Johann Balmer 's father was also named Johann Jakob Balmer and he was a Chief Justice. Johann's mother was Elizabeth Rolle Balmer. Johann was the eldest of his parents sons. He attended his first school in Liestal, a town which had just became the capital of the half canton of Basel-Landschaft. Then, for his secondary education, he studied at a school in Basel where he excelled in mathematics and decided to study that topic at university. For his university studies in mathematics Balmer attended the University of Karlsruhe and the University of Berlin. His course of studies led to a doctorate which he received from the University of Basel in 1849 for a dissertation on the cycloid. Balmer taught in Basel all his life. From 1859 until his death in 1898 he was a school teacher of mathematics at a secondary school for girls in the city. From 1865 until 1890 he was also a university lecturer in mathematics at the University of Basel where his main field of interest was geometry. He married Christine Pauline Rinck in 1868 when he was 43 years old and they had six children. However, despite being a mathematics teacher and lecturer all his life, Balmer is best remembered for his work on spectral series and his formula, given in 1885, for the wavelengths of the spectral lines of the hydrogen atom. This was set out in one of only two papers which he wrote on spectra of the elements, the second being in 1897. It is surprising to realise that Balmer was sixty years old when he wrote the paper for which he is famous on the spectral lines of the hydrogen atom and that he was seventy-two when he wrote his only other work on this topic. But for his work on what amounts to a problem in physics, Balmer would be unknown today within the history of mathematics since he made no contribution to geometry of special significance despite it being the topic of interest throughout his life.

18. Balmer, Johann (1825-1898) -- From Eric Weisstein's World Of Scientific Biograph Branch of Science " Mathematicians Branch of Science " Physicists Nationality " Swiss balmer, johann (18251898) Swiss mathematician and physicist who explained the visible spectral lines of hydrogen spectrum (involving electron drops to the n' = http://www.treasure-troves.com/bios/Balmer.html

Branch of Science Mathematicians Branch of Science Physicists ... Swiss Balmer, Johann (1825-1898) Swiss mathematician and physicist who explained the visible spectral lines of hydrogen spectrum (involving electron drops to the n ' = 2 energy level) in 1885 with the Balmer formula where is the wavelength and n Additional biographies: MacTutor (St. Andrews) Bonn Author: Eric W. Weisstein

19. Balmer, Johann (1825-1898) -- From Eric Weisstein's World Of Scientific Biograph Alphabetical Index. About this site. Branch of Science , Mathematicians v. Branchof Science , Physicists v. Nationality , Swiss v. balmer, johann (18251898), http://scienceworld.wolfram.com/biography/Balmer.html

Branch of Science Mathematicians Branch of Science Physicists ... Swiss Balmer, Johann (1825-1898) Swiss mathematician and physicist who explained the visible spectral lines of hydrogen spectrum (involving electron drops to the n ' = 2 energy level) in 1885 with the Balmer formula where is the wavelength and n Additional biographies: MacTutor (St. Andrews) Bonn Author: Eric W. Weisstein

20. Balmer Formula -- From Eric Weisstein's World Of Physics This entry contributed by Dana Romero. In 1885, johann balmer discovered a formulafor the series of discrete spectral lines emitted by atomic hydrogen. http://scienceworld.wolfram.com/physics/BalmerFormula.html

Modern Physics Quantum Physics Quantum Mechanics Quantum Numbers ... Romero Balmer Formula This entry contributed by Dana Romero In 1885, Johann Balmer discovered a formula for the series of discrete spectral lines emitted by atomic hydrogen . These had been observed for many years previously, with many unsuccessful attempts to describe them mathematically. The Balmer formula is given by for n = 3, 4, ... (the principal quantum number ), where is the wavelength of the light emitted and R is a constant now known as the Rydberg constant . If is measured in meters, For n = 3, the Balmer formula gives a wavelength is 656.3 nm, which is known as the Hydrogen-alpha line. Since the Balmer formula, other series have been found, most notably the Lyman, Paschen, and Brackett series, each describing different electron transitions of orbiting electrons in the hydrogen atom . Each of these formulas is a special case of the general equation which can be derived classically using the Bohr model of the hydrogen atom. Balmer Lines Bohr Model Hydrogen Atom Hydrogen Lines ... Rydberg Constant References Young, H. D.; Freedman, R. A.; Sandin, T. R.; and Ford, A. L.

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