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sheltered from the excitation of incident rays and kept in darkness, still produce the same photographic images. Here is how I was led to make this observation: among the preceding experiments, some had been prepared on
Wednesday the 26th and Thursday the 27th of February, and since the sun was out only intermittently on these days, I kept the apparatuses prepared and returned the cases to the darkness of a bureau drawer, leaving in place the crusts of the uranium salt. Since the sun did not come out in the following days, I developed the photographic plates on the 1st of March, expecting to find the images very weak. Instead the silhouettes appeared with great intensity ... One hypothesis which presents itself to the mind naturally enough would be to suppose that these rays, whose effects have a great similarity to the effects produced by the rays studied by M. Lenard and M. Röntgen, are invisible rays emitted by phosphorescence and persisting infinitely longer than the duration of the luminous rays emitted by these bodies. However, the present experiments, without being contrary to this hypothesis, do not warrant this conclusion. I hope that the experiments which I am pursuing at the moment will be able to bring some clarification to this new class of phenomena.
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several hours. When one then develops the photographic plate, one recognizes that the silhouette of the phosphorescent substance appears in black on the negative. If one places between the phosphorescent substance and the paper a piece of money or a metal screen pierced with a cut-out design, one sees the image of these objects appear on the negative ... One must conclude from these experiments that the phosphorescent substance in question emits rays which pass through the opaque paper and reduce silver salts.
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564:(Light: Its causes and its effects). On page 50 of volume 2, Edmond noted that Niepce de Saint-Victor had observed that some objects that had been exposed to sunlight could expose photographic plates even in the dark. Niepce further noted that on the one hand, the effect was diminished if an obstruction were placed between a photographic plate and the object that had been exposed to the sun, but " …
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24 February he reported his first results. However, the 26 and 27 February were dark and overcast during the day, so
Becquerel left his layered plates in a dark cabinet for these days. He nevertheless proceeded to develop the plates on 1 March and then made his astonishing discovery: the object shadows were just as distinct when left in the dark as when exposed to sunlight. Both
619:, and he realized that they had the same measurements as high speed electrons leaving the nucleus. In 1901 Becquerel made the discovery that radioactivity could be used for medicine. Henri made this discovery when he left a piece of radium in his vest pocket and noticed that he had been burnt by it. This discovery led to the development of
560:, observed that uranium salts emitted radiation that could darken photographic emulsions. By 1861, Niepce de Saint-Victor realized that uranium salts produce "a radiation that is invisible to our eyes". Niepce de Saint-Victor knew Edmond Becquerel, Henri Becquerel's father. In 1868, Edmond Becquerel published a book,
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photographic plate with a bromide emulsion in two sheets of very thick black paper, such that the plate does not become clouded upon being exposed to the sun for a day. One places on the sheet of paper, on the outside, a slab of the phosphorescent substance, and one exposes the whole to the sun for
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Throughout the first weeks of
February, Becquerel layered photographic plates with coins or other objects then wrapped this in thick black paper, placed phosphorescent materials on top, placed these in bright sun light for several hours. The developed plate showed shadows of the objects. Already on
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By May 1896, after other experiments involving non-phosphorescent uranium salts, he arrived at the correct explanation, namely that the penetrating radiation came from the uranium itself, without any need for excitation by an external energy source. There followed a period of intense research into
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I will insist particularly upon the following fact, which seems to me quite important and beyond the phenomena which one could expect to observe: The same crystalline crusts , arranged the same way with respect to the photographic plates, in the same conditions and through the same screens, but
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when radiation is introduced into the magnetic field. "When different radioactive substances were put in the magnetic field, they deflected in different directions or not at all, showing that there were three classes of radioactivity: negative, positive, and electrically neutral."
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he had already been investigating and the newly discovered x-rays" of Röntgen, and thought that phosphorescent materials might emit penetrating X-ray-like radiation when illuminated by bright sunlight; he had various phosphorescent materials including some
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in 1892. Later on in 1894, Becquerel became chief engineer in the
Department of Bridges and Highways before he started with his early experiments. Becquerel's earliest works centered on the subject of his doctoral thesis: the
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he had been using to study cathode rays emitted a new kind of invisible ray that was capable of penetrating through black paper". Becquerel learned of Röntgen's discovery during a meeting of the
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by the U.S. National
Academy of Sciences. In 1906, Henri was elected Vice Chairman of the academy, and in 1908, the year of his death, Becquerel was elected Permanent Secretary of the
568:… " ( ... on the other hand, the increase in the effect when the surface exposed to the sun is covered with substances that are easily altered by light, such as uranium nitrate ... ).
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led to
Becquerel publishing seven papers on the subject in 1896. Becquerel's other experiments allowed him to research more into radioactivity and figure out different aspects of the
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d'un autre côté, l'augmentation d'effet quand la surface insolée est couverte de substances facilement altérables à la lumière, comme le nitrate d'urane
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Becquerel was born in Paris, France, into a wealthy family which produced four generations of notable physicists, including
Becquerel's grandfather (
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As often happens in science, radioactivity came close to being discovered nearly four decades earlier in 1857, when
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But further experiments led him to doubt and then abandon this hypothesis. On 2 March 1896 he reported:
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1606:"Henri Becquerel: The Discovery of Radioactivity", Becquerel's 1896 articles online and analyzed on
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1390:"Antoine Henri Becquerel (1852–1908): a scientist who endeavored to discover natural radioactivity"
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711:. Becquerel has been honored with being the namesake of many different scientific discoveries. The
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In
Becquerel's early career, he became the third in his family to occupy the physics chair at the
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for his discovery of the radioactivity of uranium and he awarded the title of an
Officer of the
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Annotated bibliography for Henri
Becquerel from the Alsos Digital Library for Nuclear Issues
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including the Nobel Lecture, "On Radioactivity, a New Property of Matter", 11 December 1903
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read out Röntgen's preprint paper. Becquerel "began looking for a connection between the
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1053:"This month in physics history March 1, 1896 Henri Becquerel discovers radioactivity"
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623:, which is now used to treat cancer. In 1908 Becquerel was elected president of
471:, of how chance favors the prepared mind. Becquerel had long been interested in
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for the discovery of spontaneous radioactivity. In 1905, he was awarded the
667:. The Berlin-Brandenburg Academy of Sciences and Humanities awarded him the
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1275:"Benchmarks: Henri Becquerel discovers radioactivity on February 26, 1896"
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is also radioactive and the discovery of additional radioactive elements
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460:. In 1895, he was appointed as a professor at the École Polytechnique.
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695:. During his lifetime, Becquerel was honored with membership into the
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of light by crystals. Early in his career, Becquerel also studied the
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1212:"Sur les radiations invisibles émises par les corps phosphorescents"
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by exposure to radiation from a uranium salt. The shadow of a metal
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placed between the plate and the uranium salt is clearly visible.
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Later in his life in 1900, Becquerel measured the properties of
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school, a prep school in Paris. He studied engineering at the
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on 5 January. During the experiment, Röntgen "found that the
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Portrait of Henri's grandfather, Antoine César Becquerel, by
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radioactivity, including the determination that the element
351:; 15 December 1852 – 25 August 1908) was a French engineer,
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from the original on 11 December 2021 – via YouTube.
1633:. Vol. 3 (11th ed.). Cambridge University Press.
3537:
1508:"Becquerelite: Becquerelite mineral information and data"
1110:"Deuxième mémoire sur une nouvelle action de la lumière"
1029:
Inward bound: of matter and forces in the physical world
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712:
643:
Image of Becquerel's photographic plate which has been
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Foreign associates of the National Academy of Sciences
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Foreign Member of the Royal Society (ForMemRS) in 1908
627:, but he died on 25 August 1908, at the age of 55, in
3954:
People whose names are used in chemical element names
3950:
Scientists whose names are used in physical constants
1482:"Planetary Names: Crater, craters: Becquerel on Mars"
1456:"Planetary Names: Crater, craters: Becquerel on Moon"
319:
310:
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and the use of his name as a unit of measure in the
671:
in 1901. In 1902, he was elected as a member of the
408:). Henri started off his education by attending the
334:
328:
313:
325:
1602:Henri Becquerel, SI-derived unit of radioactivity
1388:Sekiya, Masaru; Yamasaki, Michio (January 2015).
1253:"Henri Becquerel – Biography, Facts and Pictures"
3964:
3946:List of scientists whose names are used as units
34:who created the world's first photovoltaic cell.
4048:Presidents of the Société Française de Physique
1209:
1170:"Sur les radiations émises par phosphorescence"
1167:
1093:"Mémoire sur une nouvelle action de la lumière"
3190:
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30:Not to be confused with his father, physicist
4028:Members of the American Philosophical Society
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3176:
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1031:(Reprint ed.). Oxford: Clarendon Press
1022:
1020:
1018:
1016:
696:
1484:. planetarynames.wr.usgs.gov. Archived from
1458:. planetarynames.wr.usgs.gov. Archived from
844:Random House Webster's Unabridged Dictionary
1154:, vol. 2 (Paris, France: F. Didot, 1868),
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3378:
3183:
3169:
1672:
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1572:
1112:(Second memoir on a new action of light),
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655:In 1889, Becquerel became a member of the
556:, who was investigating photography under
49:
4033:Members of the French Academy of Sciences
1405:
263:Recherches sur l'absorption de la lumière
27:French physicist and engineer (1852–1908)
3400:Scientists whose names are used as units
1641:. École polytechnique. 30 January 2019.
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1004:
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363:. For work in this field he, along with
3759:John William Strutt, 3rd Baron Rayleigh
391:
14:
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1152:La lumière: ses causes et ses effets
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790:
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4013:Foreign members of the Royal Society
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734:was named after Henri. Minor planet
726:on the Moon and also a crater named
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562:La lumière: ses causes et ses effets
441:Muséum National d'Histoire Naturelle
247:Muséum National d'Histoire Naturelle
1394:Radiological Physics and Technology
730:on Mars. The uranium-based mineral
359:, and the first person to discover
24:
1381:
1245:
1141:
1045:
978:"Henri Becquerel – Nuclear Museum"
785:
491:on 20 January where his colleague
25:
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3900:René Antoine Ferchault de Réaumur
1562:
995:
946:
915:
893:. : Great Neck Publishing. 2006.
880:
448:of light, with the phenomenon of
239:Conservatoire des Arts et Metiers
3993:École des Ponts ParisTech alumni
1534:Dictionary of Minor Planet Names
1128:"The man who Discover the world"
1125:
1075:"The Discovery of Radioactivity"
858:"The Discovery of Radioactivity"
512:and Becquerel's 18 year old son
306:
291:
1536:. Springer. 2003. p. 565.
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3983:20th-century French physicists
3749:Sir George Stokes, 1st Baronet
1542:10.1007/978-3-540-29925-7_6180
1432:. www.bipm.org. Archived from
1108:Niepce de Saint-Victor (1858)
1091:Niepce de Saint-Victor (1857)
1079:Guide to the Nuclear Wallchart
1005:Tretkoff, Ernie (March 2008).
969:
964:Henri Becquerel – Biographical
850:
832:
810:
796:"Fellows of the Royal Society"
673:American Philosophical Society
610:
588:on 27 February 1896, he said:
571:
13:
1:
3809:William John Macquorn Rankine
3739:Jean Léonard Marie Poiseuille
1639:"Episode 4 – Henri Becquerel"
1367:"Becquerel, Henri, 1852–1908"
1116:... , vol. 46, pages 448–452.
1099:... , vol. 45, pages 811–815.
818:"Becquerel, Henri, 1852–1908"
778:
659:. In 1900, Becquerel won the
60:
1095:(On a new action of light),
976:Atomic Heritage Foundation.
715:unit for radioactivity, the
540:. The intensive research of
418:École des Ponts et Chaussées
386:
125:École des Ponts et Chaussées
7:
3464:Charles-Augustin de Coulomb
1240:translated by Carmen Giunta
1198:translated by Carmen Giunta
1007:"American Physical Society"
741:
554:Abel Niépce de Saint-Victor
504:salts for his experiments.
10:
4079:
4038:Nobel laureates in Physics
3998:École Polytechnique alumni
1418:– via Springer Link.
1255:. www.famousscientists.org
719:(Bq), is named after him.
707:. Becquerel was elected a
675:. In 1903, Henri shared a
586:French Academy of Sciences
489:French Academy of Sciences
402:Alexandre-Edmond Becquerel
383:(Bq), is named after him.
348:[ɑ̃twanɑ̃ʁibɛkʁɛl]
29:
4043:Nuclear history of France
4023:French nuclear physicists
3943:
3822:
3789:Daniel Gabriel Fahrenheit
3772:
3617:
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3405:
3312:
3293:
3262:
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2801:
2458:
2147:
1925:
1691:
1581:Becquerel short biography
1407:10.1007/s12194-014-0292-z
1242:. Accessed 02 March 2019.
1200:. Accessed 02 March 2019.
697:
516:witnessed the discovery.
465:spontaneous radioactivity
463:Becquerel's discovery of
434:
290:
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217:
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1210:Henri Becquerel (1896).
1168:Henri Becquerel (1896).
722:There is a crater named
4003:Experimental physicists
3799:Johann Heinrich Lambert
3699:Johann Heinrich Lambert
3564:Rolf Maximilian Sievert
1630:Encyclopædia Britannica
754:Antoine César Becquerel
738:is named in his honor.
705:Royal Academy of Berlin
584:Describing them to the
467:is a famous example of
458:Earth's magnetic fields
398:Antoine César Becquerel
379:for radioactivity, the
302:Antoine Henri Becquerel
169:Antoine César Becquerel
75:Antoine Henri Becquerel
18:Antoine Henri Becquerel
4018:French Nobel laureates
3930:Evangelista Torricelli
3318:Nobel Prize recipients
3295:Physiology or Medicine
3284:Marie Skłodowska-Curie
1685:Nobel Prize in Physics
1347:. search.amphilsoc.org
1027:Pais, Abraham (2002).
677:Nobel Prize in Physics
652:
608:
599:
581:
558:Michel Eugène Chevreul
534:Marie Skłodowska-Curie
477:Wilhelm Conrad Röntgen
431:
373:Nobel Prize in Physics
365:Marie Skłodowska-Curie
189:Nobel Prize in Physics
4058:Scientists from Paris
3830:Alexander Graham Bell
3729:Hans Christian Ørsted
3629:Anders Jonas Ångström
3234:Bjørnstjerne Bjørnson
693:Académie des Sciences
657:Académie des Sciences
642:
625:Académie des Sciences
603:
590:
579:
426:
371:, received the 1903
3823:Non-systematic units
3669:Carl Friedrich Gauss
3604:Wilhelm Eduard Weber
3514:James Prescott Joule
1345:"APS Member History"
699:Accademia dei Lincei
580:Becquerel in the lab
410:Lycée Louis-le-Grand
392:Family and education
3719:James Clerk Maxwell
3303:Niels Ryberg Finsen
1586:7 June 2011 at the
934:. Nobel Prize. 1903
414:École Polytechnique
243:École Polytechnique
120:École Polytechnique
3554:Werner von Siemens
3413:André-Marie Ampère
1571:on Nobelprize.org
1530:"(6914) Becquerel"
1430:"BIPM – Becquerel"
1303:. royalsociety.org
1238:: 501–503 (1896),
1150:Edmond Becquerel,
653:
582:
446:plane polarization
432:
107:, Brittany, France
3960:
3959:
3484:Louis Harold Gray
3367:
3366:
3158:
3157:
1624:"Becquerel"
1613:
1551:978-3-540-29925-7
1369:. history.aip.org
1323:"Henri Becquerel"
1038:978-0-19-851997-3
966:. Nobelprize.org.
932:"Henri Becquerel"
820:. history.aip.org
806:on 16 March 2015.
756:(his grandfather)
635:Honors and awards
429:Antoine-Jean Gros
299:
298:
212:Scientific career
16:(Redirected from
4070:
4063:Becquerel family
3584:Alessandro Volta
3437:SI derived units
3394:
3387:
3380:
3371:
3370:
3320:
3210:Svante Arrhenius
3185:
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3161:
3151:
3135:
3119:
3103:
3087:
3071:
3055:
3039:
3023:
3011:
2995:
2983:
2971:
2955:
2943:
2927:
2911:
2899:
2887:
2871:
2855:
2839:
2823:
2794:
2778:
2766:
2750:
2734:
2718:
2706:
2694:
2682:
2674:
2666:
2650:
2634:
2618:
2606:
2590:
2582:
2570:
2558:
2550:
2534:
2522:
2506:
2490:
2474:
2451:
2435:
2423:
2407:
2391:
2383:
2371:
2363:
2355:
2347:
2339:
2323:
2307:
2291:
2283:
2271:
2263:
2251:
2235:
2223:
2207:
2195:
2183:
2175:
2163:
2140:
2132:
2124:
2116:
2108:
2100:
2092:
2084:
2076:
2075:
2069:
2068:
2062:
2061:
2055:
2047:
2039:
2027:
2015:
2007:
2006:
2000:
1988:
1980:
1979:
1973:
1965:
1957:
1949:
1937:
1918:
1906:
1898:
1890:
1882:
1874:
1866:
1858:
1850:
1842:
1841:
1835:
1823:
1815:
1813:Kamerlingh Onnes
1807:
1799:
1791:
1783:
1771:
1763:
1755:
1747:
1739:
1731:
1715:
1703:
1674:
1667:
1660:
1651:
1650:
1646:
1634:
1626:
1612:
1576:
1556:
1555:
1526:
1520:
1519:
1517:
1515:
1510:. www.mindat.org
1504:
1498:
1497:
1495:
1493:
1488:on 14 April 2018
1478:
1472:
1471:
1469:
1467:
1462:on 27 March 2018
1452:
1446:
1445:
1443:
1441:
1426:
1420:
1419:
1409:
1385:
1379:
1378:
1376:
1374:
1363:
1357:
1356:
1354:
1352:
1341:
1335:
1334:
1332:
1330:
1319:
1313:
1312:
1310:
1308:
1297:
1291:
1290:
1288:
1286:
1281:. 5 January 2012
1271:
1265:
1264:
1262:
1260:
1249:
1243:
1230:
1224:
1223:
1207:
1201:
1188:
1182:
1181:
1165:
1159:
1148:
1139:
1138:
1136:
1134:
1123:
1117:
1106:
1100:
1089:
1083:
1082:
1081:. 9 August 2000.
1071:
1065:
1064:
1063:(3). March 2008.
1049:
1043:
1042:
1024:
1011:
1010:
1002:
993:
992:
990:
988:
973:
967:
961:
944:
943:
941:
939:
928:
913:
912:
887:
878:
877:
875:
873:
864:. Archived from
854:
848:
836:
830:
829:
827:
825:
814:
808:
807:
802:. Archived from
792:
702:
701:
665:Legion of Honour
536:and her husband
479:'s discovery of
350:
345:
341:
340:
337:
336:
333:
330:
327:
324:
321:
318:
315:
312:
295:
271:Doctoral advisor
159:Edmond Becquerel
100:
85:15 December 1852
84:
82:
65:
62:
53:
39:
38:
32:Edmond Becquerel
21:
4078:
4077:
4073:
4072:
4071:
4069:
4068:
4067:
3988:Corps des ponts
3963:
3962:
3961:
3956:
3939:
3910:Wilhelm Röntgen
3870:Michael Faraday
3818:
3779:
3768:
3689:Heinrich Kayser
3679:William Gilbert
3659:Galileo Galilei
3618:Non-SI metric (
3613:
3474:Michael Faraday
3444:Henri Becquerel
3432:
3401:
3398:
3368:
3363:
3316:
3308:
3289:
3286:(Poland/France)
3272:Henri Becquerel
3258:
3255:(Great Britain)
3239:
3215:
3196:
3189:
3159:
3154:
3138:
3122:
3106:
3090:
3074:
3058:
3042:
3026:
3014:
2998:
2986:
2974:
2958:
2946:
2930:
2914:
2902:
2890:
2874:
2858:
2842:
2826:
2810:
2803:
2797:
2781:
2769:
2753:
2744:Cohen-Tannoudji
2737:
2721:
2709:
2697:
2685:
2677:
2669:
2653:
2637:
2621:
2609:
2593:
2585:
2573:
2561:
2553:
2537:
2525:
2509:
2493:
2477:
2465:
2454:
2438:
2426:
2410:
2394:
2386:
2374:
2366:
2358:
2350:
2342:
2326:
2310:
2294:
2286:
2274:
2266:
2254:
2238:
2226:
2210:
2198:
2186:
2178:
2166:
2154:
2143:
2135:
2127:
2119:
2111:
2103:
2095:
2087:
2079:
2073:
2072:
2066:
2065:
2059:
2058:
2050:
2042:
2030:
2018:
2010:
2004:
2003:
1991:
1983:
1977:
1976:
1968:
1960:
1952:
1940:
1932:
1921:
1909:
1901:
1893:
1885:
1877:
1869:
1861:
1853:
1845:
1839:
1838:
1826:
1818:
1810:
1802:
1794:
1786:
1774:
1766:
1758:
1750:
1742:
1734:
1718:
1706:
1698:
1687:
1678:
1637:
1588:Wayback Machine
1569:Henri Becquerel
1565:
1560:
1559:
1552:
1528:
1527:
1523:
1513:
1511:
1506:
1505:
1501:
1491:
1489:
1480:
1479:
1475:
1465:
1463:
1454:
1453:
1449:
1439:
1437:
1428:
1427:
1423:
1386:
1382:
1372:
1370:
1365:
1364:
1360:
1350:
1348:
1343:
1342:
1338:
1328:
1326:
1321:
1320:
1316:
1306:
1304:
1301:"Rumford Medal"
1299:
1298:
1294:
1284:
1282:
1273:
1272:
1268:
1258:
1256:
1251:
1250:
1246:
1231:
1227:
1208:
1204:
1189:
1185:
1166:
1162:
1149:
1142:
1132:
1130:
1124:
1120:
1107:
1103:
1090:
1086:
1073:
1072:
1068:
1051:
1050:
1046:
1039:
1025:
1014:
1003:
996:
986:
984:
974:
970:
962:
947:
937:
935:
930:
929:
916:
901:
891:Henri Becquerel
889:
888:
881:
871:
869:
868:on 15 June 2020
856:
855:
851:
837:
833:
823:
821:
816:
815:
811:
794:
793:
786:
781:
748:A. E. Becquerel
744:
669:Helmholtz Medal
637:
613:
574:
510:William Crookes
497:phosphorescence
473:phosphorescence
450:phosphorescence
437:
394:
389:
343:
309:
305:
276:Charles Friedel
251:
206:
129:
113:Alma mater
108:
102:
98:
89:
86:
80:
78:
77:
76:
66:
63:
44:
43:Henri Becquerel
35:
28:
23:
22:
15:
12:
11:
5:
4076:
4066:
4065:
4060:
4055:
4050:
4045:
4040:
4035:
4030:
4025:
4020:
4015:
4010:
4005:
4000:
3995:
3990:
3985:
3980:
3975:
3958:
3957:
3944:
3941:
3940:
3938:
3937:
3927:
3917:
3907:
3904:degree Réaumur
3897:
3887:
3880:Heinrich Mache
3877:
3867:
3857:
3847:
3837:
3826:
3824:
3820:
3819:
3817:
3816:
3813:degree Rankine
3806:
3796:
3785:
3783:
3770:
3769:
3767:
3766:
3756:
3746:
3736:
3726:
3716:
3709:Samuel Langley
3706:
3696:
3686:
3676:
3666:
3656:
3646:
3636:
3625:
3623:
3615:
3614:
3612:
3611:
3601:
3591:
3581:
3571:
3561:
3551:
3541:
3531:
3521:
3511:
3504:Heinrich Hertz
3501:
3491:
3481:
3471:
3461:
3454:Anders Celsius
3451:
3440:
3438:
3434:
3433:
3431:
3430:
3420:
3409:
3407:
3403:
3402:
3397:
3396:
3389:
3382:
3374:
3365:
3364:
3362:
3361:
3356:
3351:
3346:
3341:
3336:
3331:
3326:
3321:
3313:
3310:
3309:
3307:
3306:
3299:
3297:
3291:
3290:
3288:
3287:
3281:
3275:
3268:
3266:
3260:
3259:
3257:
3256:
3249:
3247:
3241:
3240:
3238:
3237:
3230:
3228:
3217:
3216:
3214:
3213:
3206:
3204:
3198:
3197:
3188:
3187:
3180:
3173:
3165:
3156:
3155:
3153:
3152:
3136:
3120:
3104:
3088:
3072:
3056:
3040:
3024:
3012:
2996:
2984:
2972:
2956:
2944:
2928:
2912:
2900:
2888:
2872:
2856:
2840:
2824:
2807:
2805:
2799:
2798:
2796:
2795:
2779:
2767:
2751:
2735:
2719:
2707:
2695:
2683:
2675:
2667:
2651:
2635:
2619:
2607:
2591:
2583:
2571:
2559:
2551:
2535:
2523:
2507:
2491:
2480:P. W. Anderson
2475:
2462:
2460:
2456:
2455:
2453:
2452:
2436:
2424:
2408:
2392:
2384:
2372:
2364:
2356:
2348:
2340:
2324:
2308:
2301:Goeppert Mayer
2292:
2284:
2272:
2264:
2252:
2236:
2224:
2208:
2196:
2184:
2176:
2164:
2151:
2149:
2145:
2144:
2142:
2141:
2133:
2125:
2117:
2109:
2101:
2093:
2085:
2077:
2070:
2063:
2056:
2048:
2040:
2028:
2025:C. D. Anderson
2016:
2008:
2001:
1989:
1981:
1974:
1966:
1958:
1950:
1938:
1929:
1927:
1923:
1922:
1920:
1919:
1907:
1899:
1891:
1883:
1875:
1867:
1859:
1851:
1843:
1836:
1824:
1816:
1808:
1800:
1792:
1784:
1772:
1764:
1756:
1748:
1740:
1732:
1716:
1704:
1695:
1693:
1689:
1688:
1677:
1676:
1669:
1662:
1654:
1648:
1647:
1635:
1621:, ed. (1911).
1619:Chisholm, Hugh
1615:
1604:
1599:
1594:
1578:
1564:
1563:External links
1561:
1558:
1557:
1550:
1521:
1499:
1473:
1447:
1436:on 25 May 2019
1421:
1380:
1358:
1336:
1325:. www.nndb.com
1314:
1292:
1279:EARTH Magazine
1266:
1244:
1233:Comptes Rendus
1225:
1216:Comptes Rendus
1202:
1196:: 420 (1896),
1191:Comptes Rendus
1183:
1174:Comptes Rendus
1160:
1140:
1118:
1114:Comptes rendus
1101:
1097:Comptes rendus
1084:
1066:
1044:
1037:
1012:
994:
982:Nuclear Museum
968:
945:
914:
899:
879:
849:
831:
809:
783:
782:
780:
777:
776:
775:
769:
763:
760:Jean Becquerel
757:
751:
743:
740:
736:6914 Becquerel
636:
633:
617:beta particles
612:
609:
573:
570:
546:magnetic field
493:Henri Poincaré
436:
433:
406:Jean Becquerel
393:
390:
388:
385:
357:Nobel laureate
297:
296:
288:
287:
283:
282:
279:
278:
273:
267:
266:
259:
253:
252:
250:
249:
244:
241:
235:
233:
229:
228:
219:
215:
214:
208:
207:
205:
204:
198:
192:
186:
179:
177:
173:
172:
166:
162:
161:
156:
152:
151:
149:Jean Becquerel
146:
142:
141:
135:
134:Known for
131:
130:
128:
127:
122:
116:
114:
110:
109:
103:
101:(aged 55)
97:25 August 1908
95:
91:
90:
87:
74:
72:
68:
67:
54:
46:
45:
42:
26:
9:
6:
4:
3:
2:
4075:
4064:
4061:
4059:
4056:
4054:
4053:Radioactivity
4051:
4049:
4046:
4044:
4041:
4039:
4036:
4034:
4031:
4029:
4026:
4024:
4021:
4019:
4016:
4014:
4011:
4009:
4006:
4004:
4001:
3999:
3996:
3994:
3991:
3989:
3986:
3984:
3981:
3979:
3976:
3974:
3971:
3970:
3968:
3955:
3951:
3947:
3942:
3935:
3931:
3928:
3925:
3921:
3920:J. J. Thomson
3918:
3915:
3911:
3908:
3905:
3901:
3898:
3895:
3891:
3888:
3885:
3881:
3878:
3875:
3871:
3868:
3865:
3861:
3858:
3855:
3851:
3848:
3845:
3841:
3838:
3835:
3831:
3828:
3827:
3825:
3821:
3814:
3810:
3807:
3804:
3800:
3797:
3794:
3790:
3787:
3786:
3784:
3781:
3775:
3771:
3764:
3760:
3757:
3754:
3750:
3747:
3744:
3740:
3737:
3734:
3730:
3727:
3724:
3720:
3717:
3714:
3710:
3707:
3704:
3700:
3697:
3694:
3690:
3687:
3684:
3680:
3677:
3674:
3670:
3667:
3664:
3660:
3657:
3654:
3650:
3649:Loránd Eötvös
3647:
3644:
3640:
3637:
3634:
3630:
3627:
3626:
3624:
3621:
3616:
3609:
3605:
3602:
3599:
3595:
3592:
3589:
3585:
3582:
3579:
3575:
3572:
3569:
3565:
3562:
3559:
3555:
3552:
3549:
3545:
3544:Blaise Pascal
3542:
3539:
3535:
3532:
3529:
3525:
3522:
3519:
3515:
3512:
3509:
3505:
3502:
3499:
3495:
3492:
3489:
3485:
3482:
3479:
3475:
3472:
3469:
3465:
3462:
3459:
3455:
3452:
3449:
3445:
3442:
3441:
3439:
3435:
3428:
3424:
3421:
3418:
3414:
3411:
3410:
3408:
3406:SI base units
3404:
3395:
3390:
3388:
3383:
3381:
3376:
3375:
3372:
3360:
3357:
3355:
3352:
3350:
3347:
3345:
3342:
3340:
3337:
3335:
3332:
3330:
3327:
3325:
3322:
3319:
3315:
3314:
3311:
3304:
3301:
3300:
3298:
3296:
3292:
3285:
3282:
3279:
3276:
3273:
3270:
3269:
3267:
3265:
3261:
3254:
3253:Randal Cremer
3251:
3250:
3248:
3246:
3242:
3235:
3232:
3231:
3229:
3226:
3222:
3218:
3211:
3208:
3207:
3205:
3203:
3199:
3194:
3186:
3181:
3179:
3174:
3172:
3167:
3166:
3163:
3150:
3146:
3142:
3137:
3134:
3130:
3126:
3121:
3118:
3114:
3110:
3105:
3102:
3098:
3094:
3089:
3086:
3082:
3078:
3073:
3070:
3066:
3062:
3057:
3054:
3050:
3046:
3041:
3038:
3034:
3030:
3025:
3022:
3018:
3013:
3010:
3006:
3002:
2997:
2994:
2990:
2985:
2982:
2978:
2973:
2970:
2966:
2962:
2957:
2954:
2950:
2945:
2942:
2938:
2934:
2929:
2926:
2922:
2918:
2913:
2910:
2906:
2901:
2898:
2894:
2889:
2886:
2882:
2878:
2873:
2870:
2866:
2862:
2857:
2854:
2850:
2846:
2841:
2838:
2834:
2830:
2825:
2822:
2818:
2814:
2809:
2808:
2806:
2800:
2793:
2789:
2785:
2780:
2777:
2773:
2768:
2765:
2761:
2757:
2752:
2749:
2745:
2741:
2736:
2733:
2732:R. Richardson
2729:
2725:
2720:
2717:
2713:
2708:
2705:
2701:
2696:
2693:
2689:
2684:
2681:
2676:
2673:
2668:
2665:
2661:
2657:
2652:
2649:
2645:
2641:
2636:
2633:
2629:
2625:
2620:
2617:
2613:
2608:
2605:
2601:
2597:
2592:
2589:
2584:
2581:
2577:
2572:
2569:
2565:
2564:Chandrasekhar
2560:
2557:
2552:
2549:
2545:
2541:
2536:
2533:
2529:
2524:
2521:
2517:
2513:
2508:
2505:
2501:
2497:
2492:
2489:
2485:
2481:
2476:
2473:
2469:
2464:
2463:
2461:
2457:
2450:
2446:
2442:
2437:
2434:
2430:
2425:
2422:
2418:
2414:
2409:
2406:
2402:
2398:
2393:
2390:
2385:
2382:
2378:
2373:
2370:
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181:
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171:(grandfather)
170:
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137:Discovery of
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96:
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88:Paris, France
73:
69:
58:
52:
47:
40:
37:
33:
19:
3850:Pierre Curie
3803:foot-lambert
3574:Nikola Tesla
3524:Isaac Newton
3494:Joseph Henry
3443:
3333:
3278:Pierre Curie
3271:
2588:von Klitzing
2580:Van der Meer
1720:
1628:
1607:
1533:
1524:
1512:. Retrieved
1502:
1490:. Retrieved
1486:the original
1476:
1464:. Retrieved
1460:the original
1450:
1438:. Retrieved
1434:the original
1424:
1397:
1393:
1383:
1371:. Retrieved
1361:
1349:. Retrieved
1339:
1327:. Retrieved
1317:
1305:. Retrieved
1295:
1283:. Retrieved
1278:
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1028:
985:. Retrieved
981:
971:
936:. Retrieved
890:
870:. Retrieved
866:the original
862:Berkeley Lab
861:
852:
842:
834:
822:. Retrieved
812:
804:the original
772:Becquerelite
750:(his father)
732:becquerelite
721:
681:Pierre Curie
654:
621:radiotherapy
614:
604:
600:
592:One wraps a
591:
583:
565:
561:
551:
538:Pierre Curie
518:
506:
462:
438:
404:), and son (
395:
369:Pierre Curie
301:
300:
261:
232:Institutions
211:
99:(1908-08-25)
55:Portrait by
36:
3978:1908 deaths
3973:1852 births
3890:John Napier
3860:John Dalton
3840:Marie Curie
3639:Peter Debye
3423:Lord Kelvin
3193:Nobel Prize
2632:Steinberger
2548:K. Siegbahn
2540:Bloembergen
2261:Chamberlain
1994:Schrödinger
1904:M. Siegbahn
1833:W. H. Bragg
1829:W. L. Bragg
1126:Frog, Max.
839:"Becquerel"
685:Marie Curie
611:Late career
572:Experiments
469:serendipity
400:), father (
64: 1905
3967:Categories
3793:Fahrenheit
3594:James Watt
3221:Literature
3149:L'Huillier
3113:Hasselmann
3069:Strickland
3037:Kosterlitz
2961:Perlmutter
2700:Brockhouse
2405:Schrieffer
2277:Hofstadter
2229:C. N. Yang
1986:Heisenberg
1963:De Broglie
1400:(1): 1–3.
1222:: 501–503.
1180:: 420–421.
909:1002022209
798:. London:
779:References
629:Le Croisic
454:absorption
105:Le Croisic
81:1852-12-15
57:Paul Nadar
3780:customary
3534:Georg Ohm
3448:becquerel
3305:(Denmark)
3202:Chemistry
3195:laureates
3133:Zeilinger
2953:Novoselov
2921:Kobayashi
2845:Abrikosov
2692:J. Taylor
2672:de Gennes
2664:R. Taylor
2556:K. Wilson
2504:R. Wilson
2488:Van Vleck
2459:1976–2000
2449:Rainwater
2445:Mottelson
2421:Josephson
2369:Gell-Mann
2333:Schwinger
2321:Prokhorov
2281:Mössbauer
2241:Cherenkov
2233:T. D. Lee
2157:Cockcroft
2148:1951–1975
1947:C. Wilson
1926:1926–1950
1872:Guillaume
1761:Michelson
1721:Becquerel
1692:1901–1925
1681:Laureates
774:(mineral)
768:(SI unit)
766:Becquerel
762:(his son)
728:Becquerel
724:Becquerel
717:becquerel
387:Biography
381:becquerel
353:physicist
286:Signature
226:chemistry
165:Relatives
3914:roentgen
3791:(degree
3774:Imperial
3633:angstrom
3456:(degree
3280:(France)
3274:(France)
3236:(Norway)
3212:(Sweden)
3141:Agostini
3029:Thouless
3021:McDonald
3009:Nakamura
2977:Wineland
2909:Grünberg
2865:Politzer
2849:Ginzburg
2837:Giacconi
2817:Ketterle
2772:'t Hooft
2756:Laughlin
2748:Phillips
2728:Osheroff
2656:Friedman
2628:Schwartz
2624:Lederman
2544:Schawlow
2520:Weinberg
2329:Tomonaga
2221:Brattain
2213:Shockley
2122:Blackett
2114:Appleton
2106:Bridgman
2053:Lawrence
2033:Davisson
2013:Chadwick
1896:Millikan
1880:Einstein
1769:Lippmann
1737:Rayleigh
1729:M. Curie
1725:P. Curie
1643:Archived
1584:Archived
1514:13 April
1492:13 April
1466:13 April
1440:13 April
1416:25318898
1373:12 March
1329:25 April
1307:12 March
1285:13 April
1133:13 April
1057:APS News
824:17 April
742:See also
703:and the
526:polonium
416:and the
201:ForMemRS
145:Children
3924:thomson
3874:faraday
3733:oersted
3723:maxwell
3713:langley
3703:lambert
3683:gilbert
3622:) units
3568:sievert
3558:siemens
3468:coulomb
3458:Celsius
3264:Physics
3129:Clauser
3093:Penrose
3077:Peebles
3033:Haldane
3001:Akasaki
2989:Englert
2981:Haroche
2965:Schmidt
2925:Maskawa
2877:Glauber
2869:Wilczek
2853:Leggett
2833:Koshiba
2813:Cornell
2804:present
2788:Kroemer
2784:Alferov
2776:Veltman
2760:Störmer
2680:Charpak
2660:Kendall
2644:Dehmelt
2612:Bednorz
2512:Glashow
2500:Penzias
2496:Kapitsa
2468:Richter
2441:A. Bohr
2417:Giaever
2397:Bardeen
2361:Alvarez
2345:Kastler
2337:Feynman
2217:Bardeen
2181:Zernike
2173:Purcell
1943:Compton
1888:N. Bohr
1777:Marconi
1709:Lorentz
1701:Röntgen
1683:of the
1259:6 March
1156:page 50
987:10 July
938:15 July
594:Lumière
522:thorium
502:uranium
377:SI unit
344:French:
222:Physics
3864:dalton
3753:stokes
3693:kayser
3653:eotvos
3548:pascal
3528:newton
3427:kelvin
3417:ampere
3145:Krausz
3139:2023:
3125:Aspect
3123:2022:
3117:Manabe
3109:Parisi
3107:2021:
3097:Genzel
3091:2020:
3085:Queloz
3075:2019:
3065:Mourou
3061:Ashkin
3059:2018:
3053:Thorne
3049:Barish
3043:2017:
3027:2016:
3017:Kajita
3015:2015:
2999:2014:
2987:2013:
2975:2012:
2959:2011:
2947:2010:
2931:2009:
2915:2008:
2903:2007:
2893:Mather
2891:2006:
2885:Hänsch
2875:2005:
2859:2004:
2843:2003:
2827:2002:
2821:Wieman
2811:2001:
2782:2000:
2770:1999:
2754:1998:
2738:1997:
2724:D. Lee
2722:1996:
2716:Reines
2710:1995:
2698:1994:
2686:1993:
2678:1992:
2670:1991:
2654:1990:
2640:Ramsey
2638:1989:
2622:1988:
2616:Müller
2610:1987:
2604:Rohrer
2600:Binnig
2594:1986:
2586:1985:
2576:Rubbia
2574:1984:
2568:Fowler
2562:1983:
2554:1982:
2538:1981:
2528:Cronin
2526:1980:
2510:1979:
2494:1978:
2478:1977:
2466:1976:
2439:1975:
2433:Hewish
2427:1974:
2411:1973:
2401:Cooper
2395:1972:
2387:1971:
2377:Alfvén
2375:1970:
2367:1969:
2359:1968:
2351:1967:
2343:1966:
2327:1965:
2313:Townes
2311:1964:
2305:Jensen
2297:Wigner
2295:1963:
2289:Landau
2287:1962:
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2269:Glaser
2267:1960:
2255:1959:
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2227:1957:
2211:1956:
2199:1955:
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2161:Walton
2155:1951:
2138:Powell
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2130:Yukawa
2128:1949:
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2080:1943:
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2031:1937:
2019:1936:
2011:1935:
1992:1933:
1984:1932:
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1961:1929:
1953:1928:
1941:1927:
1935:Perrin
1933:1926:
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1910:1925:
1902:1924:
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1854:1918:
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1846:1917:
1827:1915:
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1811:1913:
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1743:1905:
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1719:1903:
1713:Zeeman
1707:1902:
1699:1901:
1609:BibNum
1548:
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1351:19 May
1035:
907:
897:
872:28 May
645:fogged
530:radium
481:X-rays
435:Career
375:. The
257:Thesis
218:Fields
203:(1908)
197:(1905)
191:(1903)
185:(1900)
176:Awards
155:Father
3894:neper
3884:Mache
3854:curie
3844:curie
3782:units
3743:poise
3673:gauss
3643:debye
3608:weber
3578:tesla
3518:joule
3508:hertz
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3245:Peace
3191:1903
3081:Mayor
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2993:Higgs
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2917:Nambu
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2802:2001–
2792:Kilby
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2413:Esaki
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2257:Segrè
2245:Frank
2205:Kusch
2193:Bothe
2169:Bloch
2098:Pauli
2082:Stern
2045:Fermi
1998:Dirac
1971:Raman
1916:Hertz
1864:Stark
1805:Dalén
1781:Braun
679:with
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3598:watt
3588:volt
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2005:1934
1978:1931
1840:1916
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1797:Wien
1546:ISBN
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1468:2018
1442:2018
1412:PMID
1375:2018
1353:2021
1331:2018
1309:2018
1287:2018
1261:2018
1135:2018
1033:ISBN
989:2023
940:2019
905:OCLC
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874:2012
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