1812:
293:
313:
1510:
267:
1545:
Kamen, Martin D. (1963). "Early
History of Carbon-14: Discovery of this supremely important tracer was expected in the physical sense but not in the chemical sense".
1767:
476:. They have also purified the drug. On December 25 they seed their first batch of culture with spores of penicillin to grow it in medicinal quantity.
272:
409:
1938:
1008:, a British technical and scientific mission, exchanges information on wartime scientific advances with the United States, including
1888:
2045:
1838:
1098:
459:
1603:
1826:
572:
1508:
Waksman, S. A.; Woodruff, H. B. (1940). "Bacteriostatic and bacteriocidal substances produced by soil actinomycetes".
1898:
1808:
1334:
865:
717:
368:
361:
2085:
772:
1871:
402:
334:
1025:
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746:
686:
973:
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1714:
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1804:
2090:
395:
375:
288:
36:
2080:
1233:
1199:
909:
884:
161:
51:
30:
1915:
741:
September 9 – George
Stibitz first demonstrates remote operation of a computer, using a modified
1706:
1120:
1059:
945:
815:
801:
789:
624:
1863:
451:
382:
2004:
1674:
1635:
1556:
1451:
843:
638:
536:
463:
302:
184:
1624:
Corson, D. R.; MacKenzie, K. R.; Segrè, E. (1940). "Artificially
Radioactive Element 85".
8:
1954:
1143:
1090:
977:
927:
919:
652:
251:
179:
1678:
1639:
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1455:
1735:
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1404:
1360:
1083:
750:
646:
2053:
1739:
1531:
826:
1971:
1962:
1772:
1727:
1707:"Physical organic chemistry after 50 years: It has changed, but is it still there?"
1682:
1643:
1564:
1519:
1479:
1459:
1323:
1297:
1161:
1033:
1013:
959:
905:
776:
613:
594:
491:
1790:
1463:
1393:
818:
in the United States, Dr. Austin T. Moore (1899–1963) performs the first metallic
2018:
2000:
1626:
1568:
1415:
1397:
1382:
1364:
1353:
1338:
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983:
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847:
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211:
194:
1731:
2030:
1939:
U.S. Geological Survey
Geographic Names Information System: 1940 in science
1647:
1584:
1471:
1282:
1195:
1109:
830:
564:
483:
958:
deliver the first prototype BRC Quarter-Ton
General Purpose Vehicle – the
1401:
1290:
1169:
1029:
966:
888:
876:
742:
709:
602:
554:
528:
447:
174:
1975:
1440:
Drews, JĂĽrgen (March 2000). "Drug
Discovery: a Historical Perspective".
902:
first convened in
Britain to consider the feasibility of an atomic bomb.
1950:
1576:
1342:
1316:
1214:
1173:
1116:
1094:
1021:
948:
913:
793:
764:
509:
480:
473:
430:
1386:
1135:
1079:
895:
than has previously been supposed, making it a practical proposition.
732:
690:
634:
590:
568:
560:
1833:. Pan Grand Strategy Series (rev. ed.). London: Pan Macmillan.
1368:
1105:
861:
616:
606:
579:
1807:, "Complex Computer", issued 1954-02-09, assigned to
892:
661:
when he uses it as the title of a textbook published in New York.
557:
468:
425:
1854:
Ritchie, David (1986). "George
Stibitz and the Bell Computers".
1511:
Proceedings of the
Society for Experimental Biology and Medicine
1229:
1723:
1076:
1009:
753:
in New
Hampshire and the Complex Number Computer in New York.
725:
694:
583:
513:
1602:. Club Alpino Italiano, Centro Studi Materiali e Tecniche.
962:
2043:
601:
at the University of California, Berkeley by bombarding
1119:, American gravitational physicist and winner of the
1058:, Welsh-born theoretical physicist and winner of the
1623:
1356:), English physicist and Nobel laureate in physics.
1920:History of Computers: Hardware, Software, Internet
1855:
1760:
1028:on feasibility of an atomic bomb and work of the '
586:are first placed on sale across the United States.
458:, M. Jennings, J. Orr-Ewing and G. Sanders at the
1970:(2). Arctic Institute of North America: 147–148.
2072:
2025:. London: Macmillan Publishing. pp. 40–43.
1260:, American physician-scientist and immunologist.
1108:, American computer scientist and winner of the
891:could be produced using very much less enriched
433:involved some significant events, listed below.
1661:Mcmillan, Edwin; Abelson, Philip Hauge (1940).
1660:
1507:
543:on a marine invertebrate collecting expedition.
466:, publish their laboratory results showing the
1890:History of Computing in the Twentieth Century
1831:Station X: the Codebreakers of Bletchley Park
403:
1771:(online ed.). Oxford University Press.
1597:
1886:
649:at the University of California, Berkeley.
631:at the University of California, Berkeley.
410:
396:
1758:
1686:
1492:
18:Overview of the events of 1940 in science
1862:. New York: Simon and Schuster. p.
745:working over telegraph lines between an
1853:
1768:Oxford Dictionary of National Biography
1701:
2073:
2017:
701:, is completed under the direction of
593:is first synthesized by a team led by
1955:"Obituary: Carl R. Eklund, 1909-1962"
1949:
1825:
1544:
1439:
1099:Nobel Prize in Physiology or Medicine
486:(actinomycin D) is first isolated by
2046:"1906-1939 Jeep: Jeep Makes History"
2023:Britain and Atomic Energy, 1935–1945
1994:
1142:in Environmental Health Sciences at
460:Sir William Dunn School of Pathology
1916:"Relay computers of George Stibitz"
1913:
1497:. London: Ebury Press. p. 124.
679:
13:
1809:American Telephone & Telegraph
1762:"Widdowson, Elsie May (1906–2000)"
1012:(in particular a greatly improved
573:University of California, Berkeley
14:
2102:
1335:Louis Charles Christopher Krieger
718:Government Code and Cypher School
673:The Chemical Composition of Foods
369:List of open letters by academics
362:Timeline of cosmological theories
2044:Auto Editors of Consumer Guide.
1319:and Nobel laureate in chemistry.
1278:), English historian of science.
1052:, English biologist and academic
990:, intended as an adjunct to the
2037:
2011:
1988:
1943:
1932:
1907:
1880:
1847:
1819:
1797:
1606:from the original on 2012-04-25
998:
773:United States Antarctic Service
436:
1752:
1695:
1654:
1617:
1591:
1538:
1501:
1486:
1433:
940:May 26 – First free flight of
887:in England, calculate that an
883:, at this time working at the
783:
757:
1:
1887:Metropolis, Nicholas (2014).
1464:10.1126/science.287.5460.1960
1426:
1243:, Italian-born mathematician.
934:
837:
747:American Mathematical Society
693:' Complex Number Computer, a
687:history of computing hardware
376:History of technology by type
294:Governance and policy studies
1791:UK public library membership
1569:10.1126/science.140.3567.584
547:
322:Extraterrestrial environment
7:
1493:Robertson, Patrick (1974).
1032:' project on production of
808:
796:in a series of lectures on
641:element, is synthesized by
268:Sustainable energy research
10:
2107:
1999:. University of Calcutta.
1997:Finite Geometrical Systems
1715:Pure and Applied Chemistry
854:
671:publish the standard text
658:Physical organic chemistry
502:
1893:. Elsevier. p. 481.
1759:Whitehead, Roger (2004).
1688:10.1103/PhysRev.57.1185.2
1524:10.3181/00379727-45-11768
1264:
1040:
1026:Frisch–Peierls memorandum
1004:September–November – The
873:Frisch–Peierls memorandum
383:List of science timelines
273:Transportation technology
1663:"Radioactive Element 93"
1598:Trossarelli, L. (2010).
1495:The Shell Book of Firsts
1234:Nobel Prize in Chemistry
1200:Nobel Prize in Chemistry
885:University of Birmingham
31:List of years in science
2086:20th century in science
1732:10.1351/pac199769091919
951:, in the United States.
829:produces fully plastic
508:February 2 – The first
472:bactericidal action of
327:Terrestrial environment
1777:10.1093/ref:odnb/74313
1648:10.1103/PhysRev.58.672
1600:"the history of nylon"
1304:), American physicist.
1153:(died 2011), American
1121:Nobel Prize in Physics
1060:Nobel Prize in Physics
946:Vought-Sikorsky VS-300
816:Johns Hopkins Hospital
802:University of Calcutta
790:Friedrich Wilhelm Levi
716:at the United Kingdom
697:-based calculator for
625:Kenneth Ross MacKenzie
1858:The Computer Pioneers
1805:US patent 2668661
1330:), American inventor.
974:Tacoma Narrows Bridge
972:November 7 – The new
724:, design the British
535:and six others leave
452:Arthur Duncan Gardner
446:and a team including
314:Dinosaurs' extinction
1995:Levi, F. W. (1942).
1232:-born winner of the
1187:), English inventor.
864:demonstrated to the
844:William Justin Kroll
464:University of Oxford
1976:10.14430/arctic3531
1679:1940PhRv...57.1185M
1640:1940PhRv...58..672C
1561:1963Sci...140..584K
1456:2000Sci...287.1960D
1405:paleoanthropologist
1144:Columbia University
1091:Joseph L. Goldstein
978:aeroelastic flutter
928:Konstantin Petrzhak
920:Spontaneous fission
868:for the first time.
825:German optometrist
685:January 8 – In the
653:Louis Plack Hammett
1703:Hammond, George S.
1412:Alicia Boole Stott
1198:and winner of the
1128:Dickson Despommier
1097:and winner of the
1082:and winner of the
922:first observed by
619:is synthesized by
553:February 27 – The
541:Gulf of California
522:Barbara McClintock
512:are discovered in
496:Rutgers University
1914:Dalakov, Georgi.
1840:978-0-330-41929-1
1789:(Subscription or
1555:(3567): 584–590.
1361:Arthur Vierendeel
1138:and Professor of
1084:Nobel Peace Prize
1071:, née Muta (died
986:demonstrates the
976:collapses due to
751:Dartmouth College
705:in New York City.
647:Philip H. Abelson
578:May 15 – Women's
563:is discovered by
420:
419:
218:
217:
43:
42:
2098:
2091:1940s in science
2065:
2064:
2062:
2061:
2052:. Archived from
2041:
2035:
2034:
2019:Gowing, Margaret
2015:
2009:
2008:
1992:
1986:
1985:
1983:
1982:
1959:
1947:
1941:
1936:
1930:
1929:
1927:
1926:
1911:
1905:
1904:
1884:
1878:
1877:
1861:
1851:
1845:
1844:
1823:
1817:
1816:
1815:
1811:
1801:
1795:
1794:
1786:
1784:
1783:
1764:
1756:
1750:
1749:
1747:
1746:
1711:
1699:
1693:
1692:
1690:
1658:
1652:
1651:
1621:
1615:
1614:
1612:
1611:
1595:
1589:
1588:
1542:
1536:
1535:
1505:
1499:
1498:
1490:
1484:
1483:
1450:(5460): 1960–4.
1437:
1324:John T. Thompson
1298:Edgar Buckingham
1219:crystallographer
1162:Stephen Jacobsen
1034:enriched uranium
1014:cavity magnetron
960:four-wheel drive
906:Cavity magnetron
777:Alexander I Land
680:Computer science
612:The radioactive
595:Glenn T. Seaborg
492:H. Boyd Woodruff
412:
405:
398:
335:Tornado research
220:
219:
25:
24:
21:
20:
2106:
2105:
2101:
2100:
2099:
2097:
2096:
2095:
2081:1940 in science
2071:
2070:
2069:
2068:
2059:
2057:
2042:
2038:
2016:
2012:
1993:
1989:
1980:
1978:
1957:
1948:
1944:
1937:
1933:
1924:
1922:
1912:
1908:
1901:
1885:
1881:
1874:
1852:
1848:
1841:
1824:
1820:
1813:
1803:
1802:
1798:
1788:
1781:
1779:
1757:
1753:
1744:
1742:
1709:
1700:
1696:
1667:Physical Review
1659:
1655:
1627:Physical Review
1622:
1618:
1609:
1607:
1596:
1592:
1543:
1539:
1506:
1502:
1491:
1487:
1438:
1434:
1429:
1267:
1241:Enrico Bombieri
1205:September 26 –
1190:September 12 –
1069:Wangari Maathai
1056:Brian Josephson
1043:
1001:
956:American Bantam
954:September 21 –
937:
857:
840:
820:hip replacement
811:
798:finite geometry
792:introduces the
786:
775:determine that
760:
714:Gordon Welchman
699:complex numbers
682:
669:Elsie Widdowson
655:coins the term
550:
520:, aka corn) by
505:
439:
416:
281:Social sciences
239:
234:
224:1940 in science
209:
166:
125:
87:
19:
12:
11:
5:
2104:
2094:
2093:
2088:
2083:
2067:
2066:
2036:
2010:
1987:
1942:
1931:
1906:
1899:
1879:
1872:
1846:
1839:
1827:Smith, Michael
1818:
1796:
1751:
1694:
1673:(12): 1185–6.
1653:
1634:(8): 672–678.
1616:
1590:
1537:
1500:
1485:
1431:
1430:
1428:
1425:
1424:
1423:
1422:mathematician.
1410:December 17 –
1408:
1392:December 16 –
1390:
1377:November 17 –
1375:
1372:civil engineer
1357:
1346:
1331:
1320:
1305:
1294:
1279:
1272:Robert Gunther
1266:
1263:
1262:
1261:
1256:December 24 –
1254:
1251:astrophysicist
1244:
1239:November 26 –
1237:
1224:November 20 –
1222:
1207:Louise Johnson
1203:
1194:, German-born
1188:
1181:Clive Sinclair
1177:
1158:
1151:Daniel Quillen
1147:
1132:microbiologist
1124:
1113:
1102:
1087:
1065:
1064:
1063:
1053:
1050:Mark Bretscher
1042:
1039:
1038:
1037:
1006:Tizard Mission
1000:
997:
996:
995:
988:Leslie speaker
981:
970:
965:, designed by
952:
936:
933:
932:
931:
924:Georgy Flyorov
917:
903:
900:MAUD Committee
896:
881:Rudolf Peierls
869:
856:
853:
852:
851:
839:
836:
835:
834:
831:contact lenses
827:Heinrich Wöhlk
823:
810:
807:
806:
805:
785:
782:
781:
780:
759:
756:
755:
754:
749:conference at
739:
736:Enigma machine
722:Bletchley Park
706:
703:George Stibitz
681:
678:
677:
676:
665:Robert McCance
662:
650:
643:Edwin McMillan
632:
621:Dale R. Corson
610:
599:Edwin McMillan
589:December 14 –
587:
576:
549:
546:
545:
544:
533:John Steinbeck
525:
504:
501:
500:
499:
488:Selman Waksman
477:
456:Norman Heatley
438:
435:
418:
417:
415:
414:
407:
400:
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389:
388:
387:
386:
379:
372:
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344:
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337:
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328:
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192:
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177:
171:
168:
167:
165:
164:
156:
151:
146:
141:
136:
131:
126:
120:
115:
110:
103:
98:
93:
88:
82:
77:
72:
67:
62:
57:
48:
45:
44:
41:
40:
33:
28:
17:
9:
6:
4:
3:
2:
2103:
2092:
2089:
2087:
2084:
2082:
2079:
2078:
2076:
2056:on 2012-05-01
2055:
2051:
2050:HowStuffWorks
2047:
2040:
2032:
2028:
2024:
2020:
2014:
2006:
2002:
1998:
1991:
1977:
1973:
1969:
1965:
1964:
1956:
1952:
1946:
1940:
1935:
1921:
1917:
1910:
1902:
1900:9781483296685
1896:
1892:
1891:
1883:
1875:
1869:
1865:
1860:
1859:
1850:
1842:
1836:
1832:
1828:
1822:
1810:
1806:
1800:
1792:
1778:
1774:
1770:
1769:
1763:
1755:
1741:
1737:
1733:
1729:
1725:
1721:
1717:
1716:
1708:
1704:
1698:
1689:
1684:
1680:
1676:
1672:
1668:
1664:
1657:
1649:
1645:
1641:
1637:
1633:
1629:
1628:
1620:
1605:
1601:
1594:
1586:
1582:
1578:
1574:
1570:
1566:
1562:
1558:
1554:
1550:
1549:
1541:
1533:
1529:
1525:
1521:
1517:
1513:
1512:
1504:
1496:
1489:
1481:
1477:
1473:
1469:
1465:
1461:
1457:
1453:
1449:
1445:
1444:
1436:
1432:
1421:
1417:
1413:
1409:
1406:
1403:
1399:
1395:
1394:Eugène Dubois
1391:
1388:
1384:
1380:
1379:Raymond Pearl
1376:
1373:
1370:
1366:
1362:
1359:November 8 –
1358:
1355:
1351:
1350:J. J. Thomson
1347:
1344:
1340:
1336:
1332:
1329:
1325:
1321:
1318:
1314:
1310:
1309:Arthur Harden
1306:
1303:
1299:
1295:
1292:
1288:
1284:
1280:
1277:
1273:
1269:
1268:
1259:
1258:Anthony Fauci
1255:
1252:
1248:
1247:Judith Pipher
1245:
1242:
1238:
1235:
1231:
1227:
1226:Arieh Warshel
1223:
1220:
1216:
1212:
1208:
1204:
1201:
1197:
1193:
1192:Joachim Frank
1189:
1186:
1182:
1178:
1175:
1171:
1167:
1163:
1159:
1156:
1155:mathematician
1152:
1148:
1145:
1141:
1140:Public health
1137:
1133:
1129:
1125:
1122:
1118:
1114:
1111:
1107:
1103:
1100:
1096:
1092:
1088:
1085:
1081:
1078:
1074:
1070:
1066:
1061:
1057:
1054:
1051:
1048:
1047:
1045:
1044:
1035:
1031:
1027:
1023:
1019:
1018:Frank Whittle
1015:
1011:
1007:
1003:
1002:
993:
992:Hammond organ
989:
985:
984:Donald Leslie
982:
979:
975:
971:
968:
964:
961:
957:
953:
950:
947:
943:
942:Igor Sikorsky
939:
938:
929:
925:
921:
918:
915:
911:
907:
904:
901:
897:
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1341:), American
1283:Pierre Marie
1217:and protein
1196:biophysicist
1168:), American
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999:Other events
910:John Randall
908:invented by
898:April 10 –
860:January 5 –
846:devises the
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1296:April 29 –
1291:neurologist
1281:April 13 –
1249:, American
1213:), British
1170:bioengineer
1130:, American
1093:, American
1089:April 18 –
1030:Tube Alloys
967:Karl Probst
889:atomic bomb
877:Otto Frisch
784:Mathematics
769:Carl Eklund
763:December –
758:Exploration
710:Alan Turing
639:transuranic
603:uranium-238
555:radioactive
529:Ed Ricketts
527:March 11 –
510:transposons
448:Ernst Chain
252:Archaeology
180:Archaeology
2075:Categories
2060:2012-05-31
1981:2013-01-19
1925:2015-03-30
1873:067152397X
1793:required.)
1782:2011-08-10
1745:2014-01-22
1610:2012-02-28
1427:References
1343:mycologist
1333:July 31 –
1322:June 21 –
1317:biochemist
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1289:), French
1270:March 9 –
1215:biochemist
1179:July 30 –
1174:roboticist
1160:July 15 –
1149:June 22 –
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1095:biochemist
1067:April 1 –
1046:January 8
1022:jet engine
949:helicopter
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794:Levi graph
765:Finn Ronne
481:antibiotic
474:penicillin
431:technology
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351:Literature
289:Psychology
260:Technology
200:Philosophy
190:Literature
1387:biologist
1136:ecologist
1126:June 5 –
1115:June 1 –
1104:May 17 –
1080:biologist
733:Wehrmacht
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635:Neptunium
607:deuterons
591:Plutonium
580:stockings
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561:carbon-14
548:Chemistry
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800:at the
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1573:JSTOR
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1476:S2CID
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2027:OCLC
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