21. Historický úvod - Hendrik Antoon Lorentz Hendrik Antoon Lorentz (18. 7. 1853 4. 2. 1928). Zakladatel elektronovéteorie studoval na univerzite v holandském Leidenu, kde http://www.upol.cz/resources/ktf/joch/huvod/lorentz.html

Historický úvod pøedchozí Obsah další Klasika ... Vznik a vývoj - Lorentz - Einstein Hendrik Antoon Lorentz Zakladatel elektronové teorie studoval na univerzitì v holandském Leidenu, kde ve 22 letech obhájil disertaèní práci s takovým úspìchem, že za tøi roky byla pro nìj zaøízena nová katedra teoretické fyziky. Šlo o práci týkající se odrazu a lomu svìtla z hlediska Maxwellovy teorie, jež pøedznamenala jeho celoživotní zamìøení. Narozdíl od Maxwella však záhy dospìl k názoru, že k popisu elektrických, magnetických a optických jevù samotná koncepce pole nestaèí, ale že je tøeba pøihlížet i k elektrickým vlastnostem látky, tvoøené elektrony. V práci z roku 1892 je dán nový obsah Maxwellovým rovnicím, pøièemž vektory elektrického posunutí a magnetické indukce mají mikroskopický, statistický význam. K tìmto Maxwellovým - Lorentzovým rovnicím pøistupuje nový fundamentální vztah pro tzv. Lorentzovu sílu, které podléhá elektrický náboj v elektromagnetickém poli. Jestliže se èástice s nábojem pohybuje souèasnì v elektrickém a magnetickém poli, pùsobí na ni jak síla elektrická F e , tak síla magnetická F m . Výslednice obou sil je Lorentzova síla F l F e F m . Samotný tento vztah má mnoho významných aplikací, napøíklad pøi výkladu Haalova jevu èi pøi výpoètu pohybu èástic v urychlovaèích. Lorentz se dále zabýval elektromagnetickou teorií a roku 1875 vysvìtlil vzorce pro itenzitu pøi odrazu a lomu.

22. WIEM: Lorentza-Fitzgeralda Skrócenie (encyklopedia.pl)Category World Polska Leksykon Encyklopedia encyklopedia.pl L...... Powiazania. Relatywistyczne efekty, Wzglednosci teoria szczególna, Podrózdo gwiazd, Lorentza transformacja, lorentz hendrik Antoon, wiecej ». http://wiem.onet.pl/wiem/00b285.html

wiem.onet.pl napisz do nas losuj: has³a multimedia Fizyka Lorentza-Fitzgeralda skrócenie widok strony znajd¼ podobne poka¿ powi±zane Lorentza-Fitzgeralda skrócenie, Lorentza-Fitzgeralda kontrakcja , efekt relatywistyczny ( teoria wzglêdno¶ci ) polegaj±cy na skracaniu siê d³ugo¶ci poruszaj±cych siê przedmiotów w kierunku równoleg³ym do wektora prêdko¶ci. Je¶li w spoczywaj±cym wzglêdem danego cia³a uk³adzie odniesienia cia³o ma d³ugo¶æ x o , to gdy porusza siê z prêdko¶ci± v, jego d³ugo¶æ równa jest gdzie c - prêdko¶æ ¶wiat³a w  pró¿ni Istnienie takiego efektu postulowa³ w 1891 fizyk angielski Georg Francis Fitzgerald (1851-1901) dla wyja¶nienia negatywnego wyniku do¶wiadczenia Michelsona-Morleya . Koncepcje t± rozwin±³ w latach 1892-1893 H.A. Lorentz Lorentza transformacja Zobacz równie¿ Inercjalny uk³ad odniesienia Powi±zania Relatywistyczne efekty Wzglêdno¶ci teoria szczególna Podró¿ do gwiazd Lorentza transformacja ... do góry Encyklopedia zosta³a opracowana na podstawie Popularnej Encyklopedii Powszechnej Wydawnictwa Fogra

23. Science Center Virtuale - Fl Translate this page Lorentz, Hendrik Antoon lorentz hendrik Antoon Lorentz (1853-1928), unodei principali ispiratori della teoria della relatività di Einstein. http://www.torinoscienza.it/personaggi/fl

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. Faggin Federico Faggin Federico Faggin (1941-) ¨ il padre dei moderni microprocessori. Fermat Pierre de Fermat (1601-1665) matematico francese del Seicento Fermi Enrico Fermi il pi¹ grande fisico teorico-sperimentale del Novecento Ferraris Galileo Ferraris (1847-1897) elettrotecnico, studi² i motori a correnti alternate e fond² a Torino la prima scuola italiana per ingegneri elettrotecnici Franklin Rosalind Franklin Rosalind Franklin (1920-1958) Freud Sigmund Freud Il padre della psicoanalisi (1856-1939) Friedmann Aleksandr Aleksandrovich Friedmann L'uomo che scopr¬ l'espansione dell'Universo Gamow George Gamow Genio e umorismo dalla cosmologia alle proteine Germain Sophie Germain Matematica francese (1776-1831), diede importanti contributi alla teoria dei numeri e alla teoria dell’elasticit . Gilbert Walter Gilbert Fisico statunitense, vincitore del premio Nobel per i suoi studi dei messaggeri e del codice genetico.

24. Encyclopædia Britannica Encyclopædia Britannica. lorentz, hendrik Antoon. Encyclopædia Britannica Article http://www.britannica.com/eb/article?eu=50129

25. Lorentz Brief biography. http://turnbull.dcs.st-and.ac.uk/~history/Mathematicians/Lorentz.html

Hendrik Antoon Lorentz Born: 18 July 1853 in Arnhem, Netherlands Died: 4 Feb 1928 in Haarlem, Netherlands Click the picture above to see eight larger pictures Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Hendrik Lorentz attended primary school in Arnhem until he was 13 years of age when he entered the new High School there. He entered the University of Leiden in 1870 but, in 1872, he returned to Arnhem to take up teaching evening classes. He worked for his doctorate while holding the teaching post. Lorentz refined Maxwell 's electromagnetic theory in his doctoral thesis The theory of the reflection and refraction of light presented in 1875. He was appointed professor of mathematical physics at Leiden University in 1878. He remained in this post until he retired in 1912 when Ehrenfest was appointed to his chair. After retiring from this chair, Lorentz was appointed director of research at the Teyler Institute, Haarlem. He retained an honorary position at Leiden, where he continued to lecture. Before the existence of electrons was proved, Lorentz proposed that light waves were due to oscillations of an electric charge in the atom. Lorentz developed his mathematical theory of the electron for which he received the Nobel Prize in 1902.

26. Lorentz Biography of hendrik lorentz (18531928) hendrik lorentz attended primary school in Arnhem until he was 13 years of age when he entered the new High School there. http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Lorentz.html

Hendrik Antoon Lorentz Born: 18 July 1853 in Arnhem, Netherlands Died: 4 Feb 1928 in Haarlem, Netherlands Click the picture above to see eight larger pictures Show birthplace location Previous (Chronologically) Next Biographies Index Previous (Alphabetically) Next Main index Hendrik Lorentz attended primary school in Arnhem until he was 13 years of age when he entered the new High School there. He entered the University of Leiden in 1870 but, in 1872, he returned to Arnhem to take up teaching evening classes. He worked for his doctorate while holding the teaching post. Lorentz refined Maxwell 's electromagnetic theory in his doctoral thesis The theory of the reflection and refraction of light presented in 1875. He was appointed professor of mathematical physics at Leiden University in 1878. He remained in this post until he retired in 1912 when Ehrenfest was appointed to his chair. After retiring from this chair, Lorentz was appointed director of research at the Teyler Institute, Haarlem. He retained an honorary position at Leiden, where he continued to lecture. Before the existence of electrons was proved, Lorentz proposed that light waves were due to oscillations of an electric charge in the atom. Lorentz developed his mathematical theory of the electron for which he received the Nobel Prize in 1902.

27. References For Lorentz References for hendrik lorentz. Biography in Dictionary of Scientific Biography(New York 19701990). OW Richardson, hendrik Antoon lorentz, J. London Math. http://www-gap.dcs.st-and.ac.uk/~history/References/Lorentz.html

References for Hendrik Lorentz Biography in Dictionary of Scientific Biography (New York 1970-1990). Biography in Encyclopaedia Britannica. Books: G L de Haas-Lorentz, H A Lorentz, Impressions of his Life and Work (Amsterdam, 1957). Articles: T Hirosige, Origins of Lorentz' Theory of Electrons and the Concept of the Electromagnetic Field, Historical Studies in the physical Sciences J A Kox, Hendrik Antoon Lorentz, the Ether and the General Theory of Relativity, Archive for History of Exact Science O W Richardson, Hendrik Antoon Lorentz, J. London Math. Soc. Main index Birthplace Maps Biographies Index History Topics ... Anniversaries for the year JOC/EFR October 1997 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/Lorentz.html

28. Hendrik A. Lorentz - Biography In this way, when in 1866 the first highschool (HBS) at Arnhem was opened, HendrikLorentz, as a gifted pupil, was ready to be placed in the 3rd form. http://www.nobel.se/physics/laureates/1902/lorentz-bio.html

Hendrik Antoon Lorentz was born at Arnhem, The Netherlands, on July 18, 1853, as the son of nursery-owner Gerrit Frederik Lorentz and his wife Geertruida van Ginkel. When he was four years old, his mother died, and in 1862 his father married Luberta Hupkes. In those days the grade school did not only have school hours in the morning and in the afternoon, but also in the evening, when teaching was more free (in a sense resembling the Dalton method). In this way, when in 1866 the first highschool (H.B.S.) at Arnhem was opened, Hendrik Lorentz, as a gifted pupil, was ready to be placed in the 3rd form. After the 5th form and a year of study of the classics, he entered the University of Leyden From the start of his scientific work, Lorentz took it as his task to extend James Clerk Maxwell's theory of electricity and of light. Already in his doctor's thesis, he treated the reflection and refraction phenomena of light from this standpoint which was then quite new. His fundamental work in the fields of optics and electricity has revolutionized contemporary conceptions of the nature of matter. In 1878, he published an essay on the relation between the velocity of light in a medium and the density and composition thereof. The resulting formula, proposed almost simultaneously by the Danish physicist Lorenz, has become known as the Lorenz-Lorentz formula.

29. Physics 1902 radiation phenomena . hendrik Antoon lorentz, Pieter Zeeman. 1/2 ofthe prize, 1/2 of the prize. the Netherlands, the Netherlands. Leiden http://www.nobel.se/physics/laureates/1902/

The Nobel Prize in Physics 1902 "in recognition of the extraordinary service they rendered by their researches into the influence of magnetism upon radiation phenomena" Hendrik Antoon Lorentz Pieter Zeeman 1/2 of the prize 1/2 of the prize the Netherlands the Netherlands Leiden University Leiden, the Netherlands Amsterdam University Amsterdam, the Netherlands b.1853 d.1928 b.1865 d.1943 The Nobel Prize in Physics 1902 Presentation Speech Hendrik A. Lorentz Biography ... Swedish Nobel Stamps The 1902 Prize in: Physics Chemistry Physiology or Medicine Literature ... Peace Find a Laureate: Last modified June 16, 2000 The Official Web Site of The Nobel Foundation

30. Lorentz, Hendrik Antoon lorentz, hendrik Antoon , 1853 1928 , Dutch physicist, a pioneer in formulating the relations between electricity, http://www.infoplease.com/cgi-bin/id/A0830307

The # 1 wireless color security cam! Ultimate home movie ! Genuine Indian and Asian astrology reports and consultations by reputed Vedic Astrologers. Step-by-step guide to finding money for a growing business All Infoplease All Almanacs General Entertainment Sports Biographies Dictionary Encyclopedia Infoplease Home Almanacs Atlas Dictionary ... Fact Monster Kids' reference Info:Daily Fun facts Homework Center Newsletter You've got info! Help Site Map Visit related sites from: Family Education Network Encyclopedia Lorentz, Hendrik Antoon u O n l O Pronunciation Key Lorentz, Hendrik Antoon , Dutch physicist, a pioneer in formulating the relations between electricity, magnetism, and light. He was one of the first to postulate the existence of electrons. On this he based his explanation of the Zeeman effect (a change in spectrum lines in a magnetic field), for which he shared with Pieter Zeeman the 1902 Nobel Prize in Physics. He extended the hypothesis of G. F. Fitzgerald, an Irish physicist, that the length of a body contracts as its speed increases (see Lorentz contraction The Theory of Electrons (1909) and Problems of Modern Physics Loren, Sophia

31. Lorentz, Hendrik Antoon lorentz, hendrik Antoon. hendrik Antoon lorentz. By courtesy of theNobelstiftelsen. (b. July 18, 1853, Arnhem, Neth.d. Feb. 4, 1928 http://www.britannica.com/nobel/micro/356_61.html

Lorentz, Hendrik Antoon Hendrik Antoon Lorentz By courtesy of the Nobelstiftelsen (b. July 18, 1853, Arnhem, Neth.d. Feb. 4, 1928, Haarlem), Dutch physicist and joint winner (with Pieter Zeeman ) of the Nobel Prize for Physics in 1902 for his theory of electromagnetic radiation, which, confirmed by findings of Zeeman, gave rise to Albert Einstein's special theory of relativity. Lorentz' electron theory was not, however, successful in explaining the negative results of the Michelson-Morley experiment , an effort to measure the velocity of the Earth through the hypothetical luminiferous ether by comparing the velocities of light from different directions. In an attempt to overcome this difficulty he introduced in 1895 the idea of local time (different time rates in different locations). Lorentz arrived at the notion that moving bodies approaching the velocity of light contract in the direction of motion. The Irish physicist George Francis FitzGerald had already arrived at this notion independently ( see Lorentz-FitzGerald contraction , and in 1904 Lorentz extended his work and developed the Lorentz transformations . These mathematical formulas describe the increase of mass, shortening of length, and dilation of time that are characteristic of a moving body and form the basis of Einstein's special theory of relativity. In 1912 Lorentz became director of research at the Teyler Institute, Haarlem, though he remained honorary professor at Leiden, where he gave weekly lectures.

32. Lorentz, Hendrik Antoon (1853-1928) -- From Eric Weisstein's World Of Scientific lorentz, hendrik Antoon (18531928), Dutch physicist who was convertedfrom Helmholtz's electromagnetic theory by Hertz's experiments http://scienceworld.wolfram.com/biography/Lorentz.html

Branch of Science Physicists Nationality Dutch ... Physics Prize Lorentz, Hendrik Antoon (1853-1928) Dutch physicist who was converted from Helmholtz's electromagnetic theory by Hertz's experiments, which he felt were "the greatest triumph that Maxwell's theory has achieved." Using the Maxwellian framework, he proposed a universal theory of physics based purely on the concepts of electromagnetism The fundamental postulates, which were completely independent of mechanical principles, were presented in "Versuch einer Theorie der elektrischen und optischen Erscheinungen in between Körpern" ("Inquiry into a Theory of Electrical and Optical Phenomena in Moving Bodies," 1905). Independently of Fitzgerald , Lorentz he suggested the null result of the Michelson-Morley experiment resulted from a contraction of the arms of the interferometer in the direction of the Earth's motion. Lorenz Zeeman Additional biographies: MacTutor (St. Andrews) Bonn References Brown, L. M. (Ed.). Renormalization: From Lorentz to Landau (And Beyond). New York: Springer-Verlag, 1995. Lorentz, H. A. "Ueber die Grundlagen der Elektrodynamik für bewegter Körper."

33. Lorentz, Hendrik Antoon encyclopediaEncyclopedia lorentz, hendrik Antoon, hen'druk än'tOnlO'rents Pronunciation Key. lorentz, hendrik Antoon , 1853–1928 http://www.infoplease.com/ce5/CE031250.html

The # 1 wireless color security cam! Ultimate home movie ! Genuine Indian and Asian astrology reports and consultations by reputed Vedic Astrologers. Step-by-step guide to finding money for a growing business All Infoplease All Almanacs General Entertainment Sports Biographies Dictionary Encyclopedia Infoplease Home Almanacs Atlas Dictionary ... Fact Monster Kids' reference Info:Daily Fun facts Homework Center Newsletter You've got info! Help Site Map Visit related sites from: Family Education Network Encyclopedia Lorentz, Hendrik Antoon u O n l O Pronunciation Key Lorentz, Hendrik Antoon , Dutch physicist, a pioneer in formulating the relations between electricity, magnetism, and light. He was one of the first to postulate the existence of electrons. On this he based his explanation of the Zeeman effect (a change in spectrum lines in a magnetic field), for which he shared with Pieter Zeeman the 1902 Nobel Prize in Physics. He extended the hypothesis of G. F. Fitzgerald, an Irish physicist, that the length of a body contracts as its speed increases (see Lorentz contraction The Theory of Electrons (1909) and Problems of Modern Physics Loren, Sophia

34. Lorentz, Hendrik Antoon encyclopediaEncyclopedia lorentz, hendrik Antoon, hen'druk än'tOnlO'rents Pronunciation Key. lorentz, hendrik Antoon , 1853–1928 http://www.factmonster.com/ce5/CE031250.html

Encyclopedia Lorentz, Hendrik Antoon u O n l O Pronunciation Key Lorentz, Hendrik Antoon , Dutch physicist, a pioneer in formulating the relations between electricity, magnetism, and light. He was one of the first to postulate the existence of electrons. On this he based his explanation of the Zeeman effect (a change in spectrum lines in a magnetic field), for which he shared with Pieter Zeeman the 1902 Nobel Prize in Physics. He extended the hypothesis of G. F. Fitzgerald, an Irish physicist, that the length of a body contracts as its speed increases (see Lorentz contraction The Theory of Electrons (1909) and Problems of Modern Physics Loren, Sophia Lorentz contraction AD AD AD AD AD Print this page Cite this page Awards and Press Link to Fact Monster Add Fact Monster search ... Privacy

35. Lorentz, Hendrik Antoon. The Columbia Encyclopedia, Sixth Edition. 2001 The Columbia Encyclopedia, Sixth Edition. 2001. lorentz, hendrik Antoon.(h n´dr k än´t nl ´r nts) (KEY) , 1853–1928, Dutch http://www.bartleby.com/65/lo/Lorentz.html

Select Search All Bartleby.com All Reference Columbia Encyclopedia World History Encyclopedia World Factbook Columbia Gazetteer American Heritage Coll. Dictionary Roget's Thesauri Roget's II: Thesaurus Roget's Int'l Thesaurus Quotations Bartlett's Quotations Columbia Quotations Simpson's Quotations English Usage Modern Usage American English Fowler's King's English Strunk's Style Mencken's Language Cambridge History The King James Bible Oxford Shakespeare Gray's Anatomy Farmer's Cookbook Post's Etiquette Bulfinch's Mythology Frazer's Golden Bough All Verse Anthologies Dickinson, E. Eliot, T.S. Frost, R. Hopkins, G.M. Keats, J. Lawrence, D.H. Masters, E.L. Sandburg, C. Sassoon, S. Whitman, W. Wordsworth, W. Yeats, W.B. All Nonfiction Harvard Classics American Essays Einstein's Relativity Grant, U.S. Roosevelt, T. Wells's History Presidential Inaugurals All Fiction Shelf of Fiction Ghost Stories Short Stories Shaw, G.B. Stein, G. Stevenson, R.L. Wells, H.G. Reference Columbia Encyclopedia PREVIOUS NEXT ... BIBLIOGRAPHIC RECORD The Columbia Encyclopedia, Sixth Edition. Lorentz, Hendrik Antoon

36. Lorentz, Hendrik. The American Heritage® Dictionary Of The English Language: Fo lorentz, hendrik. The American Heritage® Dictionary of the English LanguageFourth Edition. 2000. 2000. lorentz, hendrik. SYLLABICATION Lo·rentz. http://www.bartleby.com/61/23/L0252350.html

Select Search All Bartleby.com All Reference Columbia Encyclopedia World History Encyclopedia World Factbook Columbia Gazetteer American Heritage Coll. Dictionary Roget's Thesauri Roget's II: Thesaurus Roget's Int'l Thesaurus Quotations Bartlett's Quotations Columbia Quotations Simpson's Quotations English Usage Modern Usage American English Fowler's King's English Strunk's Style Mencken's Language Cambridge History The King James Bible Oxford Shakespeare Gray's Anatomy Farmer's Cookbook Post's Etiquette Bulfinch's Mythology Frazer's Golden Bough All Verse Anthologies Dickinson, E. Eliot, T.S. Frost, R. Hopkins, G.M. Keats, J. Lawrence, D.H. Masters, E.L. Sandburg, C. Sassoon, S. Whitman, W. Wordsworth, W. Yeats, W.B. All Nonfiction Harvard Classics American Essays Einstein's Relativity Grant, U.S. Roosevelt, T. Wells's History Presidential Inaugurals All Fiction Shelf of Fiction Ghost Stories Short Stories Shaw, G.B. Stein, G. Stevenson, R.L. Wells, H.G. Reference American Heritage Dictionary Lorelei ... BIBLIOGRAPHIC RECORD The American Heritage Dictionary of the English Language: Fourth Edition. Lorentz, Hendrik

37. Hendrik Antoon Lorentz (1853 - 1928) Translate this page lorentz encontrou uma fórmula que foi descoberta quase ao mesmo tempo por umoutro físico, o dinamarquês Ludwig Valentin lorentz. hendrik, longe de se http://br.geocities.com/saladefisica9/biografias/lorentz.htm

Biografias Hendrik Antoon Lorentz background E como precursor do criador da teoria da relatividade, destaca-se Hendrik A. Lorentz. O (Leiden) honoris causa (multiplets), triplet triplet triplet normal de Lorentz e, spin. Salienta-se na obra do pesquisador a descoberta da chamada Lorentz, a de Lorentz. www.saladefisica.cjb.net

38. Biografias De Físicos Translate this page Johann. L. LANDAU, Lev Davidovich. lorentz, hendrik Antoon. M. MARCONI,Guglielmo MAXWELL, James Clerk MICHELSON, Albert Abraham. MILLIKAN http://br.geocities.com/saladefisica9/

Biografias A ARISTARCO ARQUIMEDES B BECQUEREL, Antoine Henri BELL, Alexander Graham BERNOULLI, Daniel BOHR, Niels Henrik David ... BROGLIE, Louis de C CAVENDISH, Henry CELSIUS, Anders COULOMB, Charles Augustin de CURIE, Pierre e Marie D DOPPLER, Christian Johann E EDISON, Thomas Alva EINSTEIN, Albert F FAHRENHEIT, Gabriel Daniel FARADAY, Michael FIZEAU, Armand Hyppolyte Louis FRANKLIN, Benjamin G GALILEI, Galileu GALVANI, Luigi GAUSS, Carl Friedrich GILBERT, William ... GUTENBERG, Johannes H HEISENBERG, Werner Karl HERTZ, Heinrich Rudolf HIPARCO HOOKE, Robert ... HUYGENS, Christiaan J, K JOULE, James Prescott KELVIN, Lord (William Thomson) KEPLER. Johann L LANDAU, Lev Davidovich LORENTZ, Hendrik Antoon M MARCONI, Guglielmo MAXWELL, James Clerk MICHELSON, Albert Abraham MILLIKAN, Robert Andrews ... MORSE, Samuel Finley Breese N, O NEWTON, Isaac OERSTED, Hans Christian OHM, Georg Simon P PASCAL, Blaise PLANCK, Max K. E. Ludwig R ROENTGEN, Wilhelm Konrad RUTHERFORD, Ernest S SNELL, Willebrord van Roijen STEVIN, Simon T TALES TESLA, Nikola THOMSON, Joseph John TORRICELLI, Evangelista V VAN DE GRAAFF, Robert Jemison

39. Lorentz, Hendrik Antoon lorentz, hendrik Antoon (18531928). Dutch physicist, winner (withhis pupil Pieter Zeeman) of a Nobel prize in 1902 for his work http://www.cartage.org.lb/en/themes/Biographies/MainBiographies/L/Lorentz/1.html

Lorentz, Hendrik Antoon Dutch physicist, winner (with his pupil Pieter Zeeman) of a Nobel prize in 1902 for his work on the Zeeman effect, in which a magnetic field splits spectral lines. Lorentz spent most of his career trying to develop and improve Scottish scientist James Clerk Maxwell's electromagnetic theory. He also attempted to account for the anomalies of the Michelson-Morley experiment by proposing (independently of Irish physicist George Fitzgerald) that moving bodies contracted in their direction of motion. He took the matter further with his method of transforming space and time coordinates, later known as Lorentz transformations, which prepared the way for Albert Einstein's theory of relativity. Lorentz was born in Arnhem and studied at Leiden, where he became professor of theoretical physics at the age of 24. In 1912 he became director of the Teyler Institute in Haarlem.

40. Pieter Zeeman & Hendrik Antoon Lorentz Themes Arts SciPhilately Modern Physics Part I Pieter Zeemanand hendrik Antoon lorentz. Used with permission of Maiken http://www.cartage.org.lb/en/themes/Arts/scistamp/modphys1/08.html

Themes Arts Sci-Philately Moder ... n Physics Part I Pieter Zeeman and Hendrik Antoon Lorentz Used with permission of Maiken Naylor, University at Buffalo, Buffalo, NY, USA, http://ublib.buffalo.edu/libraries/units/sel/exhibits/stamps Pieter Zeeman (1865-1943) and Hendrik Antoon Lorentz (1853-1928) shared the 1902 Nobel prize in physics for the investigation and explanation of the Zeeman effect: when a spectral source is placed in a magnetic field, the emission lines are found to be first broadened and then split into components as the magnetic field strength increases, and the emitted light is polarized. Lorentz' theoretical work on the electromagnetic theory of light assumed that charged particles called electrons carry currents or transport electric charge, and their vibrations are the cause of electromagnetic waves. The effect of a magnetic field on the light emitted and spectroscopically analyzed conformed to Lorentz' theory, confirming the electromagnetic wave nature of light.

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