francis perrin bègue

I think there are the two points for this special very important work of Louis de Broglie which I could add — historical points — on this development of the fundamental ideas of a wave associated with particles. We know this to be very true. After there had been no success in trying to diffract X-rays by slits, Laue succeeded with crystals, and G.P. Pediatrics, 126, e40-e45. Then there is a series of two or three papers in 1923 on matter waves in the Comptes Rendus; the first two of those papers were presented to the Academy by your father. But de Broglie really, already at that time, considered that there could be an experimental verification of associated waves with particles. If this interview is important to you, you should consult earlier versions of the transcript or listen to the original tape. You speak, of course, of Langevin as the man about whom the new physics centered. Download our mobile app now. Time : 07:00 à 08:35 Date : 02/03/2020 Synopsis : Dans le futur, un jeune homme défie les autorités de son monde sans émotions en rencontrant le passeur qui veut récréer un monde libre et en couleurs.De Phillip Noyce avec Brenton Thwaites, Jeff Bridges, Meryl Streep, Alexander Skarsgard, Taylor Swift, Katie Holmes, Cameron … I remember very well what Langevin said on this, and he really considered —. +1 301.209.3100, 1305 Walt Whitman Road (1994) Hommage à Francis Perrin CEA Google Scholar. Yes. And it was about these preliminary papers or the communication to the Association of Physics that we probably had some discussion already. Comptes Rendus 182:219–221, Perrin F (1926) Fluorescence à longue durée des sels d’urane solides et dissous Comptes Rendus 182:929–931, Perrin F (1926) Polarisation de la lumière de fluorescence Vie moyenne des molécules dans l’état excité J Physique 7:390–401, Perrin F (1927) La désactivation induite des molécules et la théorie des antioxygènes. The real teaching of Langevin on quantum physics, let us say, was when he lectured about the equilibrium between electrons and photons, considering not only the discontinuity of absorption, but also the fact that you couldn’t have thermal equilibrium between light and matter if, for instance, absorption of light was corresponding to photons giving impulsion to the atoms absorbing the photons and if the emission was isotropic. Francis Perrin is a french theater actor. But it’s quite possible because Langevin was not a member of the Academy at that time, so it couldn’t be Langevin who could present this. Movies. William F (sometimes Francis or Franklin) Perrin was born abt Apr 1842 to William Perrin and Sarah Hunter. Medal Francis Perrin Atomic Reactor Centrale Nuclear React Medal. He developed ideas which connected closely the interpretation of fluorescence essentially with these general quantum relations without himself working in the field of spectroscopy. And indeed it was not with the slits that it was done; it was with crystals — that was later on. Well, he was himself very much interested in the development of the quantum physics, but, let’s say, on the old line of the Planck relation and discontinuity of atomic and molecular structure, connection between frequency and energy and all this. But at that time it was more frequent because now we have about the same number of hours for presentation to the Academy but maybe three or four times more communications, so the proportion of those which are presented to the Academy —. And so it is in the year after that, about ‘28, that I was speaking with Auger; I worked very much with him at that time. Liity Facebookiin ja pidä yhteyttä käyttäjän Bénédicte Perrin ja muiden tuttujesi kanssa. Investigacións científicas Scènes de ménages (TV Series 2009– ) cast and crew credits, including actors, actresses, directors, writers and more. But many were still very reluctant: Louis de Broglie himself, like Einstein, who was always very much shocked and, indeed was against any probability interpretation of quantum mechanics. Underhill Embro Dobb, James Mackinson Mr Elijah Wheeler Moore Dumbrill, Thomas Dr.Geo. Unable to display preview. But it was really a continuation of the fundamental idea of de Broglie, like Laue had done for the X-rays. But Langevin said, “Well, it is not at all this; it is really this intrinsic, invariance relation at, the foundation of relativity which seems to me very coherent and true in showing that it’ s something; that is an interesting argument.”. But this was not on quantum theory essentially, but on the molecular structure of the nucleus of the atom. This interview was conducted as part of the Archives for the History of Quantum Physics project, which includes tapes and transcripts of oral history interviews conducted with ca. pp 7-33 | But a statistical distribution should be calculated with the wave structure of light. Directed by Pierre Neel. Release Calendar DVD & Blu-ray Releases Top Rated Movies Most Popular Movies Browse Movies by Genre Top Box Office Showtimes & Tickets Showtimes & Tickets In Theaters Coming Soon Coming Soon … [Telephone call interrupts]. He said, “Well, it’s not a real theory if there is nothing new in it which brings some new experimental discovery or verification of something that couldn’t be explained by the previous theories.” But Langevin was much more favorable to the inherent coherence of a theory, for relativity and so on; even before any experimental verification, if the theory was beautiful and coherent, he was much more inclined to think that it had some real value. Commissioner Chambort (Francis Perrin) dreams to catch Vars, although his idiotic assistant Camus (Raphaël Lenglet) is of no help. Well, let us say, he proposed this model of a more solar system; there was a central positive charge with electrons rotating around it. Pediatrics, 126, e40-e45. He accepted it, but without working himself in the field of the new quantum mechanics. In footnotes or endnotes please cite AIP interviews like this: Interview of Francis Perrin by Thomas S. Kuhn and Theo Kahan on 1965 January 12, It was either at the soutenance or before, because this was discussed very little before. Perrin, Francis Perrin, Jean Baptiste Perrine, Charles Dillon Perrone, Giovanni Perronneau, Jean-Baptiste Perrot, Georges Perrot, Jules Perroux, François Perry, Fred Perry, Mathews Galbraith Perry, Ralph Burton Pershing, John Joseph Persico, Edoardo Persio Persson, Göran . Par ailleurs, elle découvre qu'Amos Pike n'est pas le fou dangereux que l'on prétend. We are committed to the preservation of physics for future generations, the success of physics students both in the classroom and professionally, and the promotion of a more scientifically literate society. For many interviews, the AIP retains substantial files with further information about the interviewee and the interview itself. This transcript may not be quoted, reproduced or redistributed in whole or in part by any means except with the written permission of the American Institute of Physics. Francis Picabia: Adeline André: Abraham Foxman: Jean Patou: José van Dam: Caroline Pigozzi: Frédéric Vitoux: Anne Victor Denis Hurault De Vibraye: Adolfo Bioy Casares: Michaël Denard: Yves Bureau: Alexandre Bisson: Jean-Luc Fabre: Maurice Ravel: Pierre Lenoir: Francis Martin: Christoph Eschenbach: Nathan Milstein: … When you point out that people were generally — then I take it that even to some extent Langevin had some skepticism about this, was rather shocked by the idea. I looked for it, but I didn’t find anything. And Louis de Broglie stated at that time that maybe diffraction of particles through very narrow slits could be observed and show the existence of the wave length associated with the particles. In a way Langevin had thoroughly studied it, and probably my father had spoken with Langevin, maybe, already before the day of the exposition of the paper. This service is more advanced with JavaScript available, New Trends in Fluorescence Spectroscopy Discussions of scientific matters relate to work that was done between approximately 1900 and 1930, with an emphasis on the discovery and interpretations of quantum mechanics in the 1920s. It was not only looking through the thesis itself but this preliminary communication. Perrin… At that time I remember that it was Paul Langevin who said, “Well, it is so well founded in the relativity invariance principle and so on that I think it is something valuable.” And it was Langevin who took the responsibility of accepting the thesis of Louis de Broglie, though it was rather shocking. And if there was no real direct possibility of measuring this wave length, my father wasn’t very much interested, in a theory which couldn’t be connected with experiment. Ehrenfest said, “Certainly Perrin is right; the measurements of Auger and Perrin are certainly much more satisfactory. No Interest if paid in full in 6 mo on $99+Opens in a new window or tab* No Interest if paid in full in 6 months on $99+. It isn’t really how quickly did people come to believe it, but what was the role of this larger philosophical consideration and how quickly did it play a role? Comptes Rendus 184:985–987, Perrin J (1927) Fluorescence et induction moléculaire par résonance Comptes Rendus 184:1097–1100, Perrin J, Choucroun N (1928) Vitesse des réactions photochimiques Comptes Rendus 187:697–698, Perrin J (1928) Détermination du rôle de la lumière dans les réactions chimiques thermiques. At that time teaching at the Ecole Normale was good on classical physics, but very bad on modern physics. Now, I’ll ask you another question along this same line. Francis Leroi (5 de septiembre de 1942 – 21 de marzo de 2002) fue un director, ... (1980, con Cathy Stewart y Julia Perrin). Biography of Valérie Bègue (excerpt) ... Francis Perrin born October 10, 1947 Grigory Potemkin born September 24, 1739 Horatio Nelson born September 29, 1758 Nicole Croisille born October 9, 1936 Edith Wilson born October 15, 1872 Jean-Pierre Castaldi born October 1, 1944 Richard Harris born October 1, 1930 Princess … This is a direct recollection of this; the question of my father and the answer of de Brogue and the fact also that I was among those who were shocked by the proposal of Louis de Broglie. There are several papers in the Comptes Rendus. Profile: Born October 10, 1947 in Versailles, is an actor, director and screenwriter French. Partly it is the question of whether you remember anything he said about this earlier atom model of his own, his feelings about it and about what had happened to it, but also more generally. Rutherford had shown that nitrogen atoms bombarded by an alpha particle will emit a hydrogen atom, and at that time he thought that it was more like an explosion of the atom produced by the impact of the alpha particle. (TV Series 2000– ) cast and crew credits, including actors, actresses, directors, writers and more. Suite 300 This seminar presents the state of the art and the modern trends microscale heat transfer. we had better understood the necessity of considering that any measurement should be in agreement with the wave structure of light, with the quantum only appearing in the discontinuity of the —. Francis Perrin is a Senior Fellow at the Policy Center for the New South who focuses on energy. La dernière fois que j’avais vu Un Fil à la patte de Georges Feydeau, c’était dans une mise en scène théâtrale télévisée de Francis Perrin. La pièce était jouée au théâtre des Variétés le 18 avril 2005 par trente animateurs de France 2. Some possibility of it. Pont de Béart. J Physique 7:13S–15S, Perrin F (1926) Détermination de la vie moyenne dans l’état activé des molécules fluorescentes. SCI ESL 104 (France, 1 Apr 2004 - , 500 RUE FRANCIS PERRIN, SARAN, LOIRET, 45770) ESL COMMERCIAL LIMITED (United Kingdom, 31 Oct 1994 - , 6-8 Salisbury Road Wrexham, Clwyd, LL13 7AS) ESL PROPERTIES LIMITED (United Kingdom, 23 Sep 2014 - , Suite No 1, Elco House 22-24 Homecroft Road Wood Green, London, … Descubre también todas las fotos y videos de Francis Perrin. The obituary was featured in Baltimore Sun on January 9, 2010. The team's latest con, selling the Eiffel Tower to a Russian mob boss, backfires when the man wants revenge. I remember he mentioned slits, but obviously afterwards Davisson and Germer and G.P. I’m not sure at all about this. He was quite satisfied with the development of the fundamental principle of uncertainty and things like that, but really he himself didn’t work in this direction and was very loosely connected with the real development of quantum mechanics, of wave mechanics, and —. I’m not quite sure that it is even mentioned in this, but this could be ascertained; I could ask to see the documents of this period. When you were at the Ecole Normale, how much did the problems of the quantum enter into education, or to what extent was a good student at the Ecole Normale exposed to this? But really it was the responsibility of Langevin, and though we were —. Well, at that time he worked very much on the connection between the discontinuity of the molecular and atomic states and light, in fluorescence and photo-chemistry and so on. Now, I realize there is something just in the formality of the examining that I have no idea about. Plus proches de nous, citons encore les acteurs Francis Perrin et Darry Cowl. In most cases it is just given to the secretary, but very often the paper is not read. Of course, I think also of the older period. Main: 609-896-5000 Admissions: 800-257-9026 - United States Army Air Force (114 words) exact match in snippet view article find links to article Software Markt) - Sep, 1987 Selover, Jay (April 1986). In art, the probability that two different I was there. I mean, granting the initial shock, did people very quickly take hold of this idea that this does give us an opening on the problems of determinism? Ecrits de Francis Perrin. Join Facebook to connect with Frances Perrin and others you may know. Interscience, New York, Pringsheim P (1949) Fluorescence and phosphorescence Interscience, New York, Juzeliunas G, Andrews DL (1999) In: Andrews DL, Demidov AA (eds) Resonance energy transfer Wiley, Chichester, pp 65–107, Kallmann H, London F (1928) Z Physik Chem B2:207–243, Translation by RS Knox (1984) Univ of Rochester, New York, Franck J, Hertz G (1914) Vehr d Deutsch Phys Ges 16:12–19, Klein O, Rosseland S (1921) Z Physik 4:46–51, Cario G, Franck J (1922) Z Physik 11:161–166, Beutler H, Josephy B (1927) Naturwiss 15:540, Murata S, Tachiya M (1992) Chem Phys Lett 194:347–350, Franck J (1925) Trans Faraday Soc 21:536–542, Agranovich VM, Galanin MD (1982) Electronic excitation energy transfer in condensed matter Elsevier, Amsterdam, Berberan-Santos MN, Nunes Pereira EJN, Martinho JMG (1999) In: Andrews DL, Demidov AA (eds) Resonance energy transfer Wiley, Chichester, pp 108–149, Bowen EJ (1966) In: Phillips GO (ed) Energy transfer in radiation processes Elsevier, Amsterdam, Gaviola E, Pringsheim P (1924) Z Physik 24:24–36, Weigert F, Käppier G (1924) Z Physik 25:99–117, Förster T (1949) Z Naturforsch 4a:321–327, Weigert F, (1920) Vehr d Deutsch Phys Ges (3) 1:100–102, Vavilov SI, Lewschin WL (1923) Z Physik 16:135–154, Sjöback R, Nygren J, Kubista M (1995) Spectrochim Acta A51:L7–L21, Yu W, Pellegrino F, Grant M, Alfano RR (1977) J Chem Phys 67:1766–1773, Birks JB, Munro IH (1967) Prog React Kinet 4:239–303, Förster T (1951) Fluoreszenz Organischer Verbindungen, Vandenhoeck & Ruprecht, Göttingen, Jablonski A (1955) Acta Phys Pol 14:295–307, Jablonski A (1957) Acta Phys Pol 17:471–479, Jablonski A (1960) Bull Acad Pol Sci,sér Sci, Math, Astr et Phys 8:259–263, Jablonski A (1961) Z Naturforsch 16a: 1–4, Jablonski A (1962) Bull Acad Pol Sci, sér Sci, Math, Astr et Phys 10:555–556, Perrin J (1948) La Science et l’Espérance PUF, Paris, Charpentier-Morize M (1997) Perrin, savant et homme politique Belin, Paris, Perrin F (1951) Notice sur les travaux scientifiques de Francis Perrin Paris, https://doi.org/10.1007/978-3-642-56853-4_2. Rider University 2083 Lawrenceville Road Lawrenceville, NJ 08648. So this argument of this easy production of waves by collisions and transformation of momentum into production of X-rays, or photons in general, was not at all a good connection between waves and matter particles. But I remember that among the young physicists at that time certainly it was considered rather quickly as an essential character of the importance of the new physics. I think that it penetrated the philosophy of a fraction of the young French physicists rather quickly, though with some reluctance at the beginning. Check out Francis Perrin on Amazon Music. Subjects discuss their family backgrounds, how they became interested in physics, their educations, people who influenced them, their careers including social influences on the conditions of research, and the state of atomic, nuclear, and quantum physics during the period in which they worked. When a member of the Academy presents a paper for someone else, does he actually physically read the paper to the members of the Academy? This is an incomplete list detailing the codenames and aliases used by F Section agents of the Special Operations Executive. Le pont de Broughton édifié en 1826 pour le franchissement de l’Irwell entre Broughton et Pendleton (aujourd'hui deux faubourgs de Salford, dans la banlieue du Grand Manchester), dans le Lancashire, était l'un des premiers ponts suspendus construits en Europe. Download preview PDF. Did he ever work with it as a working model, do you know, or continue to be involved with it? Was it accepted by the group? Myself, for instance, maybe it will be so for one out of ten communications for the Comptes Rendus that I go to the blackboard to tell the Academy of something which is of general interest in the communication. The ideas of Heisenberg were less accessible to the French physicist. Francis Perrin Para el actor francés, véase Francis Perrin (actor). Through time, i learn that there are a lots of wonderfull people with handicap, that give a lot of happiness to humanity. I remember that the question of my father on the possible experimental consequence was at the exposition. At the soutenance de these my father was a member of the jury — he was always very much interested in the real connection between theory and experiment — at the end he asked Louis de Broglie if there could be some real experimental verification of his ideas. This was also something that Langevin said at the soutenance, was it? I don’t know why he didn’t talk about crystals at that time because for X-rays it was an obvious state of affairs. And the fact that there was an opening in the new physics in this direction was eventually considered very satisfactory by myself, for instance, after I had been shocked as most of the physicists were —. After that Ehrenfest said, “Well, Perrin has something to say on this.” I wasn’t on the list of communications, but I was there. NAME of BOY EMPLOYER POSTAL ADDRESS Caffey, Henry George Mr David Dann Bryanston Coole, William Thomas Mr Thos.N. Niels Bohr Library & Archives, American Institute of Physics, Finally, is there something about the atom model that you can —? Descubre su biografia, el detalle de sus 37 años de carrera y toda su actualidad. But he showed that this general idea of the discontinuity of the states of molecules and atoms and the connection with the absorption and emission of light according to the Planck relation was essential in the field of kinetics in chemistry, for explaining the old law of Arrhenius, and also in the field of fluorescence and the transfer of energy between molecules and meta-stable states, and so on, and transfer of energy between these activated states, and so on. Pont de Brésis. My father tried to see if there was any reality that could be connected with this formula of de Broglie’s. Bégué, R.E. Listen to your favorite songs from Francis Perrin. 100 atomic and quantum physicists. Est-ce que vous savez? Stream ad-free with Amazon Music Unlimited on mobile, desktop, and tablet. View the profiles of people named Frances Perrin. Découvrez vos propres épingles sur Pinterest et enregistrez-les. Francis Perrin passed away in Baltimore, Maryland. Francis Perrin was born in Paris and attended École Normale Supérieure in Paris. SCIRP Mobile Website Cite as. Oh, it’s never mentioned in the Comptes Rendus; it could be in the secretariat of the Academy, just in the written minutes of the session. Genealogy profile for Francis Perrin Francis Perrin (deceased) - Genealogy Genealogy for Francis Perrin (deceased) family tree on Geni, with over 200 million profiles of ancestors and living relatives. Only maybe very late when at the Solvay Conference in the ‘20’s he was the first to propose the correct interpretation of the transmutation discovered by Rutherford. Quixote [3] stands as an isolated (and imaginary) exception. It is impossible to have such a sharp peak because it is in contradiction to the fundamental wave structure of light.” But it was so that Ehrenfest at that time was already deeply convinced of this necessity of using waves for calculation of any statistical distribution and photon only for the individual elementary phenomenon. With Francis Perrin, Jean Antolinos, Maria Laborit, Jean-Renaud Garcia. The Procès-verbaux? Thomson and Davisson and Germer succeeded in diffracting and measuring the wave lengths of the associated waves for electrons at that time. The actual connection between the principle of combination he developed although he was never working in spectroscopy himself. The obituary was featured in The Record on March 28, 2018. AKA: Francis R Perrin , M Perrin , Mae F Perrien , Mae Frances Perrin ,,,,, +6 more Related to: Krystal Long , John E Perrin , Demetries Cherell Perrin , Theresa Perrin , Debbie B Holley , Anthony S Perrin , John E Perrin , John Edwa Perrin , Donecia P Perrin , Donyel M Perrin +7more show less De Broglie was, already at that time, aware that there should be some comportment of the particles which could show this associated wave length by diffraction. Bénédicte Perrin on Facebookissa. Perrin: But really it was the responsibility of Langevin, and though we were —. Well, maybe he wasn’t much connected with the development of quantum mechanics itself. Well, it is difficult to say, but I think that in the years, let’s say ‘27 and ‘28 — in this period — there were quite a number of French physicists who were very happy with this development of the fundamental principle of physics. I remember that when de Broglie presented his work for a thesis on the fundamental relation of a wave associated to particles with a connection between the wave length and the momentum of the particles this was a rather shocking proposition for a physicist. Foi o pai de Francis Perrin, tamén físico, especialista en fisión nuclear, quen dirixiu a Comisión para a Enerxía Atómica de Francia (CEA) de 1951 a 1970. Francis Perrin passed away in Stockton, California. It was at that time that Langevin was the one who supported this as a serious work and said this of course at the exposition of the thesis itself. Nickel B (1996) EPA Newsletter 58:9–38 Google Scholar. Neveu M, Baton J-P (eds) (1998) Écrits de Francis Perrin CEA Google Scholar. At that time, you see, Louis de Broglie had spoken of the fact that when an electron hits a target it gives X-rays and so we are more or less used to this transformation of particles into waves. X. Yes. Francis Perrin. But certainly it was much more difficult for a man like Langevin to accept this; on the contrary, the general idea of this corpuscular structure of matter and small corpuscles with forces between them was much more acceptable to my father, and so I think that he proposed this without solving at all the difficulty of radiation. I think that Mauguin and my father had looked through the paper before the thesis was expounded, but I’m not sure. Do you remember, did your father talk at all about the thesis, beyond this question? In France it was really Langevin who introduced teaching at the College de France many years before on relativity; but there were seminars also on quanta and spectroscopy and things like that. This transcript is based on a tape-recorded interview deposited at the Center for History of Physics of the American Institute of Physics. In general in this period, how much work and consciousness of problems involving the quantum was there in France? Perrin J (1935) Grains de matière et de lumière Hermann, Paris Google Scholar. multiple discoveries are not uncommon. See more ideas about french movies, movies, french films. Syntax; Advanced Search; New. French Ligue 1 outfit AS Saint-Etienne squeezed through to the Coupe de France semi-finals after beating third-tier US Boulogne-sur-Mer 4-3 in a penalty shootout on Tuesday after the match finished 1-1. Menu. Auger, Pierre, 1899-1993|Broglie, Louis de, 1892-1987|Langevin, Paul, 1872-1946|Perrin, Francis|Rutherford, Ernest, 1871-1937, Engineering and Physical Science Degrees Earned by Members of Underrepresented Groups, www.aip.org/history-programs/niels-bohr-library/oral-histories/4515, Université de Paris [University of Paris], American Association of Physicists in Medicine, AVS: Science & Technology of Materials, Interfaces, and Processing. Francis Perrin (10 octubre 1947) - Últimas películas: Las Vacaciones del Pequeño Nicolas (2014) - Thérèse Desqueyroux (2012) - La oportunidad de mi vida (2011) - Ça n'arrive qu'à moi (1985) Did that go far enough, so far as you know, to lead anybody to wonder whether in fact the thesis should be accepted? Nov 29, 2018 - Explore Penny Lara's board "SOE" on Pinterest. That’s difficult to answer. Qui veut gagner des millions? Google has many special features to help you find exactly what you're looking for. Item Information. Descubre todas las noticias de Francis Perrin, su biografía, su filmografía completa, su actualidad. Since 1993, he has been directing the 3Montansier de Versaille2 theater. I remember a meeting in Oxford, I think, of the British Association in this year — it would be ‘25 or something like that — where I presented this work, and there was another work presented by, I don’t remember who, a German I think, which had measurements showing a very sharp peak of the emission of the photo-electron. And after some reluctance, many of us said, “Well, it is really so and it is very satisfactory to have a new physics in which we have not the strict connection between observation and prediction of the future.” After being very shocking for many physicists the statistical connection was accepted and indeed that was satisfactory, just thinking of the connection with living ratter and conscience. Francis Perrin, Self: Le monde en face. ), George A… Melville, NY 11747 Search the world's information, including webpages, images, videos and more. Price: US $100.09. I think that was his personal contribution to this — and it was one in the series of lectures he gave on this equilibrium between the photons and natter and this necessity of having a general description of the absorption and emission in terms of photons as well as waves. By and large that would be his responsibility; the others might look at it — probably would look at it. I don’t think it played a great role in the contribution of French physicists to quantum mechanics. To a very great extent from my point of view, almost everything happens then, let us say, between ‘26 and ‘28. You are referring to his lectures of ‘27? The American Institute of Physics, a 501(c)(3) not-for-profit corporation, advances, promotes and serves the physical sciences for the benefit of humanity. I didn’t mean how long did it take before people adopted the probability interpretation, but I did mean, how quickly did this larger philosophical problem of the old, long-standing difficulties of determinism play a role in people’s attitudes toward it. To us it was just shocking and had no value. It focuses on Heat Transfer at short length and time scale where the physical laws used in classical heat transfer are not valid anymore. But it was obvious that the wave length of the X-ray connected with an electron was quite different from the wave length or energy associated by de Broglie to the particle itself. This was a thing that really, as with the photons — where if we have very short wave photons at first, they are like particles, but if we have a very narrow slit, we have a diffraction. Since the developments themselves, there has been a great deal of talk — some of it extraordinarily loose talk — about how one does anything from “get God back into the Universe” to at least “get free will back into the Universe”. He deeply understood the necessity of this association and the compound nucleus, let us say, in such a nuclear reaction. What we knew was troublesome was the idea of a strict materialistic determinism in connection with a rational interpretation of life and thinking. With so very many people coming up to be examined for degrees, one tends to take it for granted that the only person present who will have read the thesis with care is the person who is the director of the thesis. View the profiles of people named Perrin Begue. In science, priority is a key issue, and independent This is a preview of subscription content, Medawar P (1982) Pluto’s republic Oxford UP, Oxford, Chargaff E (1968) Science 159:1448–1449 (see also Heraclitean Fire (1978) Rockefeller U.P, New York), Borges JL (1944) Ficciones Sur, Buenos Aires, Poirier J-P (1993) Lavoisier Pygmalion, Paris, Snow CP (1967) Variety of men Scribner’s, New York, Hoffmann R (1995) The same and not the same Columbia UP, New York, Ziman J (1968) Public knowledge Cambridge UP, Cambridge, Bernard C (1865) Introduction à l’étude de la médecine expérimentale, Paris, Kohn A (1989) Fortune or failure Missed opportunities and chance discoveries Black-well, Oxford, Roberts RM (1989) Serendipity Wiley, New York, Jacques J (1990) L’imprévu ou la science des objects trouvés Odile Jacob, Paris, Vallery-Radot P (1943) Les plus belles pages de Pasteur Flammarion, Paris, (1950) Oeuvres scientifiques de Jean Perrin CNRS, Paris, Perrin J (1913) Les atomes Alcan, Paris; (1936) Rédaction nouvelle Alcan, Paris, Perrin J (1918) La fluorescence Ann Phys (Paris) 10:133–159, Perrin J (1919) Matière et lumière Ann Phys (Paris) 11:5–108, Perrin J (1920) Atomes et lumière Revue du Mois 21:113–166, Perrin J (1922) Radiation and chemistry Trans Faraday Soc 17:546–572, Perrin J (1923) Observations sur la fluorescence Comptes Rendus 177:469–475, Perrin J (1923) Radiochimie de la fluorescence Comptes Rendus 177:612–618, Perrin J (1923) Radiochimie de la fluorescence (suite) Comptes Rendus 177:665–666, Perrin J, Choucroun N (1924) Fluorescence, et lois générales relatives aux vitesses de réaction Comptes Rendus 178:1401–1406, Perrin J (1925) Lumière et réactions chimiques, rapport au 2, Perrin J, Choucroun N (1926) Parallélisme entre le pouvoir fluorescent et la vitesse de réaction Comptes Rendus 183:329–331, Perrin J, Choucroun N (1927) Rôle de l’induction moléculaire dans l’activation par choc.

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