61. REGIERUNGonline Translate this page walther bothe, einer von nur sieben Doktoranden Max-Plancks, lebte und arbeitetesein ganzes Leben lang in Deutschland, abgesehen von langer russischer http://www.bundesregierung.de/artikel,-782710/Walther-Bothe-Deutscher-Physik.htm

Textversion English Français Kontakt ... Impressum nav_items = [ [['Homepage', '/',1],['Bundesregierung', '/-,414/Bundesregierung.htm'],['Politikthemen', '/-,415/Politikthemen.htm'],['Nachrichten', '/-,417/Nachrichten.htm'],['Reden / Interviews', '/-,11635/Reden-Interviews.htm'],['Pressekonferenzen', '/-,11931/Pressekonferenzen.htm'],['Gesetze', '/-,418/Gesetze.htm'],['Publikationen / Fotos', '/-,11647/Publikationen-Fotos.htm'],['E-Magazine', '/-,11813/E-Magazine.htm'],['Kontakt', '/-,419/Kontakt.htm'],['Impressum', '/-,11624/Impressum.htm']] ]; Bundesregierung Walther Bothe: Deutscher Physik-Nobelpreisträger von 1954 fnWriteClipImage("/images/bpa/structure/clipping.gif","782710","Walther Bothe: Deutscher Physik-Nobelpreisträger von 1954"); Foto: picture-alliance / akg-images Physik-Nobelpreisträger Walther Bothe Artikel versenden Zur Druckansicht Text größer Text kleiner Kontext Deutsche Physik-Nobelpreisträger Walther Bothe, einer von nur sieben Doktoranden Max-Plancks, lebte und arbeitete sein ganzes Leben lang in Deutschland, abgesehen von langer russischer Kriegsgefangenschaft im Ersten Weltkrieg. Seine Entdeckungen, zuletzt als Direktor eines Max-Planck-Instituts, trugen zum Verständnis zahlreicher kernphysikalischer Phänomene bei. Walther Bothe wurde am 8. Januar 1895 in Oranienburg geboren. Er studierte zwischen 1908 und 1912 Physik, Mathematik und Chemie an der Universität Berlin und promovierte 1914 bei Max Planck. Nach seinem Studium arbeitete er bis 1930 an der Physikalisch-Technischen Reichsanstalt Berlin und wurde außerordentlicher Professor an der Berliner Universität.

62. Famous People In The Great War bothe, walther, German, soldier on the Eastern Front; taken prisoner by theRussians and spent 5 years in captivity in Siberia, physicist who won a Nobel http://www.greatwar.nl/famous/famouspeople.html

THE HERITAGE OF THE GREAT WAR Famous and Notorious Personalities What did Daddy do in the Great War ? By Rob Ruggenberg Below you will find a list of more than 300 persons who played a role in the First World War. We left most of the generals and politicians out. The people on this list were all extraordinary. Some of their roles may look small and insignificant, and some of them were rather unknown at that time - but in the years to come the world was going to hear from them. Even dead they had a message that came through. All these people were wounded, scratched, insulted, loved, disappointed, satisfied, challenged, brutalized, robbed from their ideals or otherwise shaped by the experiences they had during the Great War. And as they, for their part, shaped the remaining era of the 20th Century, one can hardly overestimate the influence of that war on our present-day world. Pictures above: Propaganda encouraged fathers to leave their family and to play a role in the Great War. Left: a German poster. Right: British poster.

63. The Science Bookstore - Chronology 1925 AD, walther bothe and Hans Geiger demonstrate that energy and mass areconserved in atomic processes. 1925 AD, Wolfgang Pauli formulates the exclusion http://www.thesciencebookstore.com/chron.asp?pg=31

64. Walther Bothe - Wikipedia, The Free Encyclopedia walther bothe. This is NOT the Wikipedia The content is from the Wikipedia Nobel Prize biography walther bothe and the Early Years of the KWImF http://www.usindexlist.de/keyword/Walther_Bothe.php

Not logged in Log in Help Walther Bothe This is NOT the Wikipedia - The content is from the Wikipedia Walther Wilhelm Georg Bothe January 8 February 8 ) was a German physicist who won a Nobel Prize in Physics for 1954 (along with Max Born ) for his invention of the coincidence circuit He was born in Oranienburg Germany (near Berlin ) and studied physics at the University of Berlin under Max Planck . During World War I he was taken prisoner by the Russians and spent 5 years in captivity in Siberia After the war, he collaborated with Hans Geiger at Physikalisch-Technische Reichsanstalt in Berlin, where he made his most important discoveries. He discovered that if a single particle is detected by two or more Geiger counters , the detection will be practically coincident in time. Using this observation he constructed the coincidence circuit allowing several counters in coincidence to determine the angular momentum of a particle. He studied the Compton effect using such a set up and establishing the modern analysis of scatter processes. During the 1920s Bothe used the coincidence method to discovery penetrating radiation coming from the upper atmosphere now known as cosmic rays . His data indicated that the tradition was not composed exclusively of gamma rays , but was also composed of high energy particles (now known to be mostly mesons ). Bothe began applying the coincidence method to the transmutation of light elements by the bombardment with

65. J.H.D.Jensen - Personal Recollection By B.Stech An excellent opportunity was the 60th birthday of walther bothe (1951).Wolfgang Pauli, who for some time was reluctant to come to Germany, http://www.thphys.uni-heidelberg.de/home/info/historie_dir/jensen_stech.html

J.H.D. Jensen Personal recollection by Berthold Stech Please do not expect a usual after dinner speech with many jokes. No, this is an attempt of an homage to a great man to whom I had the priviledge to be close for many years. Hans Jensen's personality, his views on life, his scientific and human wisdom had a great influence on the lives of his friends and students, and certainly on mine. The reputation of physics at Heidelberg was growing fast. Jensen and Bothe, could bring to an end the international isolation after the war. An excellent opportunity was the 60th birthday of Walther Bothe (1951). Wolfgang Pauli, who for some time was reluctant to come to Germany, came to this festival. (Pictures 2+3). Little later Maria Meyer, Bethe, Gamov, Rabi, Weisskopf, Wigner, Fermi and many other outstanding scientists came for visits. Already some time before moving to the new house I had finished my PhD under Bothe and had followed a suggestion by Jensen to work on multipole radiation of isomeric nuclei. There was then ample opportunity to discuss with Jensen and to learn frorn him. He usually came and asked to come to his room, offered a drink, brought along a tremendously long chart of all nuclei, mentioned the problems with them, their known and their not yet established properties. I was always impressed how much he knew, how critical he was to his own suggestions, and how conscientiously and systematically he worked. He was not a formalist, more phenomenologically oriented. But he did not fully trust intuition as long as there was not a good mathematical formula for it or a direct experimental proof.

66. J.H.D.Jensen, Leben Und Werk Translate this page 1947 versuchte walther bothe, der nach dem 2. Geburtstag von walther bothe.Auch Bethe, Gamow, Maria Meyer, Nordheim, Rabi, Weisskopf, Wigner und viele http://www.thphys.uni-heidelberg.de/home/info/historie_dir/jensen_dosch_stech.ht

Johannes Daniel Jensen 1. Sein Leben auf der noch alles werden kann. und sehn einander dunkel an. Hans Jensen blieb der Ruperto Carola trotz vieler ehrenvoller Rufe aus dem In- und Ausland treu. Er starb unerwartet am 11. Februar 1973 in seinem 66. Lebensjahr in Heidelberg. 2. Sein Werk Lebensdaten Geboren am 25.6.1907 in Hamburg Abitur Hamburg 1926 Studium in Hamburg und Freiburg i. Br. von 1926-1931 Promotion Hamburg 1932 Wissenschaftlicher Assistent in Hamburg 1932-1937 Habilitation Hamburg 1936 Dozent Hamburg 1937-1939 Regierungsrat im Wetterdienst 1939-1940 bis zu seinem Tod 1973 Verstorben 1973 Schriftenverzeichnis J. Hans D. Jensen Die Ladungsverteilung in Ionen und die Gitterkonstante des RbBr nach der statistischen Methode. Z. Phys. 77 1933 (a) 1933 (b) 1933 (c) Zur relativistischen Behandlung des Fermiatoms. Z. Phys. 82 1935 (a) 1935 (b) 1936 (a) 1936 (b) Quantentheoretische Berechnung der Alkalihalogenidgitter. Z. Phys.101 1937 (a) 1937 (a) 1938 (a) 1938 (b) Zur Kernsystematik. Verh. Dtsch. Phys. Ges.19 1938 (c) Zur physikalischen Deutung der kristallographischen Ionenradien (mit Meyer- Gossler und Rhode). Z. Phys.110; Angew. Chemie 52 (1939)

67. Geek's Garden - Computerworld In 1924, walther bothe, a German physicist, mathematician and chemist, walther bothe developed the AND logic gate. walther bothe developed the AND logic http://www.computerworld.com/hardwaretopics/hardware/story/0,10801,103684,00.htm

68. Laureates Of Tomorrow Nobel Essay Contest Herein lies the novelty of Max Born and walther bothe’s work, the culmination ofPlanck’s lifelong theoretical work and all the subsequent discoveries. http://www.nyas.org/programs/nobel/essay8.html

Physics, 3rd Place The Struggle for Particle-Wave Duality By Aliza Malz Hunter College High School, Manhattan The first half of the twentieth century oversaw a great struggle in the fundamental physics of matter and forces, between the particle-based theories and wave-based theories, whose intensity was demonstrated by historic experiments proving the wave-like and particle-like behavior of matter and forces. The struggle, ignited in 1918 by Max Planck’s Nobel Prize in Physics, continued for 50 years before its resolution in the full acceptance, comprehension, and application of particle-wave duality. This initial step in understanding the nature of matter and forces set the stage for a new era of particle physics that utilized particle-wave duality to its advantage rather than fighting the evidence of its existence. Prior to the acceptance of particle-wave duality, there were two competing theories about the nature of matter and forces: They were viewed as particles or waves but never both. There were numerous experiments showing evidence validating one theory or the other, but no experiment ever showed, nor will one ever show, particle and wave behavior at the same time. During the first half of the twentieth century many Nobel Prizes were distributed to scientists who conducted experiments that swayed the opinion of the scientific community in one direction or another. A good place to start understanding the roots of particle-wave duality is the nature of light, once considered a particle by classical physicists, but viewed as a wave by the early twentieth century due to the “double slit experiment.” This famous experiment, first performed by Thomas Young in 1801 and reproduced worldwide ever since, had a setup in which visible light passes through a diffraction grating (a series of slits in a surface) and its waves interfere to cause an interference pattern on a screen placed in their path. Wave interference occurs when a straight wave front encounters an obstacle and bends around it. Two or more curved wave fronts can create diffraction, the pattern of constructive and destructive interference of the waves. This phenomenon was long known to exist in mechanical waves such as those in standing water, and seeing light behave in this manner led to a new interpretation of its composition.

69. Active Skim View Of: Index Friedrich, 386 Booker, Barbara, 217 Born, Max, 47, 83, 179, 180181, 182, 184,186, 188 bothe, walther, 132 Bowman, Isaiah, 189 Bradshaw, Ralph, 217, http://www.nap.edu/nap-cgi/skimit.cgi?isbn=0309072700&chap=433-459

70. Einstein Archives Online - Contents Of Folder 6-3 Translate this page 6-159.00, 12/07/1921, bothe, walther W. Einstein, Albert. Get full record fromarchival database, 6-159.10, 12/07/1921, bothe, W. Einstein, Albert http://www.alberteinstein.info/db/ViewFolder.do?folder=6-3

71. Einstein Archives Online - Details For [2 - 90.00] Author, bothe, walther W. Receiver, Einstein, Albert. Title. First Line. Contents.Language, German. Location, Albert Einstein Archives, The Jewish National http://www.alberteinstein.info/db/ViewDetails.do?DocumentID=34328

72. Golem.de - Lexikon Translate this page Dieser Artikel basiert auf dem Artikel walther bothe aus der freien EnzyklopädieWikipedia und steht unter der GNU Lizenz für freie Dokumentation. http://lexikon.golem.de/Walther_Bothe

News Forum Archiv Markt ... Impressum Lexikon-Suche Lizenz Dieser Artikel basiert auf dem Artikel Walther Bothe aus der freien Enzyklopädie Wikipedia und steht unter der GNU Lizenz für freie Dokumentation . In der Wikipedia ist eine Liste der Autoren verfügbar, dort kann man den Artikel bearbeiten Letzte Meldungen OpenOffice.org 1.1.5 erschienen Expression: Microsoft stellt Grafik- und Design-Produkte vor ... Originalartikel Lexikon: Walther Bothe Walther Wilhelm Georg Bothe 8. Januar in Oranienburg 8. Februar in Heidelberg ) war ein deutscher Physiker wurde Bothe die Max-Planck-Medaille verliehen. Er erhielt zusammen mit Max Born den Physik Nobelpreis Bothe war Mitglied der in Leipzig Englische Wikipedia: Walther Bothe Personendaten NAME Bothe, Walther Wilhelm Georg ALTERNATIVNAMEN KURZBESCHREIBUNG deutscher Physiker GEBURTSDATUM 8. Januar GEBURTSORT Oranienburg STERBEDATUM 8. Februar STERBEORT Heidelberg Die Inhalte unter lexikon.golem.de entstammen der freien Enzyklopädie Wikipedia und wurden von ihren Autoren unter der GNU Lizenz für freie Dokumentation veröffentlicht. Die einzelnen Wikipedia-Artikel sind als solche gekennzeichnet.

73. Biografia Bothe Translate this page walther bothe (Germania, 1891 - 1957). Nel 1925 insieme a Geiger effettuò unesperimento che confermò la teoria dei quanti proposta da Einstein nel 1905 in http://www.ba.infn.it/~garuccio/didattica/fotoelettrico/personaggi/biografia_bot

L'effetto fotoelettrico: i personaggi mappa Percorsi Sommario Bibliografia Walther Bothe (Germania, 1891 - 1957) La formazione Il metodo Bothe-Geiger Lo studio sui raggi cosmici Lo studio Altri risultati

74. Dr.Tarek Said's Homepage-Nobel Prize Winners 1954 Born, Max bothe, walther WG 1953 Zernike, Frits (Frederik) 1952 Bloch,Felix Purcell, Edward Mills 1951 Cockcroft, John D., Sir Walton, Ernest TS http://www.geocities.com/tsaid3/nobel.html

Nobel Prize Winners Literature Peace Physics Medicine ... Nationalities Nobel Prize in Literature 2001 Sir V.S. Naipaul 2000 Gao Xingjian 1997 Dario Fo 1996 WISLAWA SZYMBORSKA 1995 SEAMUS HEANEY 1994 KENZABURO OE 1993 TONI MORRISON 1992 DEREK WALCOTT 1991 NADINE GORDIMER 1990 OCTAVIO PAZ 1989 CAMILO JOSE CELA NAGUIB MAHFOUZ 1987 JOSEPH BRODSKY 1986 WOLE SOYINKA 1985 CLAUDE SIMON 1984 JAROSLAV SEIFERT 1983 SIR WILLIAM GOLDING 1982 GABRIEL GARCIA MARQUEZ 1981 ELIAS CANETTI 1980 CZESLAW MILOSZ 1979 ODYSSEUS ELYTIS ( ODYSSEUS ALEPOUDHELIS ) 1978 ISAAC BASHEVIS SINGER 1977 VICENTE ALEIXANDRE 1976 SAUL BELLOW 1975 EUGENIO MONTALE 1973 PATRICK WHITE 1972 HEINRICH BALL 1971 PABLO NERUDA 1970 ALEKSANDR ISAEVICH SOLZHENITSYN 1969 SAMUEL BECKETT 1968 YASUNARI KAWABATA 1967 MIGUEL ANGEL ASTURIAS 1965 MICHAIL ALEKSANDROVICH SHOLOKHOV 1964 JEAN-PAUL SARTRE 1963 GIORGOS SEFERIS ( GIORGOS SEFERIADIS ) 1962 JOHN STEINBECK 1961 IVO ANDRIAC 1960 SAINT-JOHN PERSE ( ALEXIS LEGER ) 1959 SALVATORE QUASIMODO 1958 BORIS LEONIDOVICH PASTERNAK 1957 ALBERT CAMUS 1956 JUAN RAMON JIMENEZ 1955 HALLDER KILJAN LAXNESS 1954 ERNEST MILLER HEMINGWAY 1953 SIR WINSTON LEONARD SPENCER CHURCHILL 1951 PER FABIAN LAGERKVIST 1950 EARL BERTRAND ARTHUR WILLIAM RUSSELL 1949 WILLIAM FAULKNER 1948 THOMAS STEARNS ELIOT 1947 ANDRE PAUL GUILLAUME GIDE 1946 HERMANN HESSE 1945 GABRIELA MISTRAL ( LUCILA GODOY Y ALCA-YAGA ) 1944 JOHANNES VILHELM JENSEN 1943-1940 Main Fund and Special Fund of this prize section.

75. Max Planck Society - EDoc Server Translate this page 8.1.1891 - 8.2.1957 - 1908-1912 Studium der Physik Universität Berlin, 1913Staatsprüfung für das höhere Lehramt, Assistent Physikalisches Institut der http://edoc.mpg.de/62409

Home News About Us Contact ... Home Search Quick Search Advanced Fulltext Browse Collections Persons My eDoc Session History Login Name: Password: Documentation Help Display Documents Entries 1-1 of 1 ID: , Archiv zur Geschichte der Max-Planck-Gesellschaft / Best¤nde¼bersicht: III. Abteilung III. Abt., Rep. 6 - Bothe, Walther Document type: Other Abstract / Description: 1908-1912 Studium der Physik Universit¤t Berlin, 1913 Staatspr¼fung f¼r das h¶here Lehramt, Assistent Physikalisches Institut der Landwirtschaftlichen Hochschule Berlin, 1914 Promotion zum Dr. phil., 1913-1914 Wissenschaftlicher Hilfsarbeiter Physikalisch-Technische Reichsanstalt Berlin, dort 1921 Regierungsrat, 1925 Laboratoriumsvorsteher, 1927 Mitglied, 1914-1920 Milit¤rdienst und russische Kriegsgefangenschaft, 1925 Habilitation Universit¤t Berlin, 1929 nichtbeamteter a. o. Prof., 1930 o. Prof. Universit¤t GieŸen und Direktor des Physikalischen Instituts, 1932 Universit¤t Heidelberg, 1934-1945 Hon. Prof., 1946-1952 o. Prof. und Direktor des Physikalisch-Radiologischen Instituts, 1934-1954 Wissenschaftliches Mitglied und Direktor des (Teil-) Instituts f¼r Physik des Kaiser-Wilhelm-/Max-Planck-Instituts f¼r medizinische Forschung Heidelberg, 1954 Nobelpreis f¼r Physik. Der NachlaŸ wurde 1976 und 1978 aus dem Max-Planck-Institut f¼r Kernphysik ¼bernommen.

76. ASÍ FUNCIONA Translate this page bothe, walther (Compartido), Alemania, 1954. Bragg, Lawrence (Compartido),Inglaterra, 1915. Bragg, William (Compartido), Inglaterra, 1915 http://www.asifunciona.com/que_quien/nf_apellido/nobel_fisica_apellidos.htm

PREMIOS NOBEL DE FÍSICA POR APELLIDOS APELLIDO - NOMBRE PAÍS AÑO Abrikosov, Alexei A. (Compartido) EE.UU. - Rusia Alferov, Zhores I. (Compartido) Rusia Suecia EE.UU. Anderson, Carl D. (Compartido) EE.UU Anderson, Philip W. (Compartido) EE.UU. Appleton, Edward V. Inglaterra Bardeen, John (Compartido) EE.UU. Bardeen, John (Compartido) EE.UU. Barkla, Charles Glover Inglaterra Basov, Nicolay G. (Compartido) URSS Becquerel, Henri (Compartido) Francia Bednorz, J. Georg (Compartido) Alemania Bethe, Hans EE.UU. Alemania Blackett, Patrick M. S. Inglaterra Bloch, Felix (Compartido) EE.UU. Bloembergen, Nicolaas (Compartido) EE.UU. Bohr, Aage N. (Compartido) Dinamarca Bohr, Niels Dinamarca Born, Max (Compartido) Inglaterra Bothe, Walther (Compartido) Alemania Bragg, Lawrence (Compartido) Inglaterra Bragg, William (Compartido) Inglaterra Brattain, Walter H. (Compartido) EE.UU Braun, Ferdinand (Compartido) Alemania Bridgman, Percy W. EE.UU. Brockhouse, Bertram N. (Compartido) Chadwick, James Inglaterra Chamberlain, Owen (Compartido) EE.UU Chandrasekhar, Subramanyan (Compartido) EE.UU

77. Nernst, Walther Hermann --  Britannica Concise Encyclopedia - Your Gateway To Nernst, walther Hermann body German scientist, one of the founders of modern bothe, walther (1891–1957). German physicist walther bothe was born in http://concise.britannica.com/ebc/article?tocId=9373253

78. Walther Von Der Vogelweide --  Britannica Concise Encyclopedia - Your Gateway walther von der Vogelweide body Greatest German lyric poet of the Middle Ages . walther bothe The Nobel Foundation http://concise.britannica.com/ebc/article-9382293

Home Browse Store Help Search Britannica Concise Again Walther von der Vogelweide Concise Encyclopedia Article Page 1 of 1 born c. died c. Greatest German lyric poet of the Middle Ages. Of knightly birth, Walther was educated at a monastery school and served masters in several courts. His poetry goes far beyond the artificial conventions followed by other minnesinger s by introducing an element of realism. He emphasizes the virtues of the balanced life, in both the social and the personal spheres. More than half of his approximately 200 extant poems are political, moral, or religious; the rest are love poems, among them the popular Unter der Linden. var mm = [["Jan.","January"],["Feb.","February"],["Mar.","March"],["Apr.","April"],["May","May"],["June","June"],["July","July"],["Aug.","August"],["Sept.","September"],["Oct.","October"],["Nov.","November"],["Dec.","December"]]; To cite this page: MLA style: "Walther von der Vogelweide." Britannica Concise Encyclopedia http://concise.britannica.com/ebc/article-9382293 APA style: Walther von der Vogelweide. ( Britannica Concise Encyclopedia . Retrieved http://concise.britannica.com/ebc/article-9382293

79. History Of Astronomy: What's New At This Site On July 7, 2000 bothe, walther (18911957). Short biography (Encycl. Brit.) The Nobel Prize inPhysics 1954 Including a short biography. Bouguer, Pierre (1698-1758) http://www.astro.uni-bonn.de/~pbrosche/new/new000707.html

History of Astronomy What's new History of Astronomy: What's new at this site on July 7, 2000 Welcome / About Site map (complete Table of Contents) updated History of astronomy Persons A Aquila (fl. 2nd c.) Short biography (Encycl. Brit.) Arp, Halton Christian (b. 1927) Short biography (Encycl. Brit.) Augustus, Caesar (63 BC - AD 14) Biography and extended bibliography (Encycl. Brit.) Ausonius, Decimus Magnus (c. 310-c. 395) Short biography (Encycl. Brit.) B Bacon, Francis (1561-1626) Biography and extended bibliography (Encycl. Brit.) Bainbridge, John (1582-1643) Short biography (Encycl. Brit.) Short biography (Encycl. Brit.) Basov, Nikolay Gennadiyevich [Bassow, Nikolai Gennadijewitsch] (b. 1922) Short biography (Encycl. Brit.) The Nobel Prize in Physics 1964 Including a short biography Beda Venerabilis [Baeda; Engl. The Venerable Bede] (c.673-735) Short biography and references (Encycl. Brit.) Berenice II (c. 269 BC-221 BC) Short biography (Encycl. Brit.) Bernstein, Jeremy (b. 1929)

80. Walther Bothe Wissenglobal.de Translate this page NAME, bothe, walther Wilhelm Georg. ALTERNATIVNAMEN. KURZBESCHREIBUNG, deutscherPhysiker. GEBURTSDATUM, 8. Januar 1891. GEBURTSORT, Oranienburg http://www.cooldictionary.com/words/Walther-Bothe.wikipedia

Walther Bothe Hear it pronounced in Wikipedia This article on crosslinked , or Back to: Webster Dictionary with PRONUNCIATION and Sound! where you can learn English and educate yourself Practice English, talk to a funny artificial intelligence robot hear its voice (hilarious). Walther Bothe Walther Wilhelm Georg Bothe January 8 February 8 ) was a German physicist mathematician chemist , and Nobel Prize winner. Bothe won a Nobel Prize in Physics for 1954 (along with Max Born ) for his invention of the coincidence circuit Contents Biography Early years Middle years Later years and death ... External links and further reading Biography Early years He was born in Oranienburg Germany (near Berlin ) and studied physics from 1908 until 1912 at the University of Berlin under Max Planck . Bothe obtaining his doctorate by . During World War I he was taken prisoner by the Russians and spent 5 years in captivity in Siberia After the war, he collaborated with Hans Geiger at Physikalisch-Technische Reichsanstalt in Berlin, where he made his most important discoveries. He discovered that if a single particle is detected by two or more Geiger counters , the detection will be practically coincident in time. Using this observation, he constructed the

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