55:
533:(formerly 'Q' factor) is a factor that scales the biological effect for different types of radiation, relative to x-rays (e.g. 1 for beta radiation, 20 for alpha radiation, and a complicated function of energy for neutrons). In general, conversion between rates of emission, the density of radiation, the fraction absorbed, and the biological effects, requires knowledge of the geometry between source and target, the energy and the type of the radiation emitted, among other factors.
2162:
515:
352:
As with every
International System of Units (SI) unit named after a person, the first letter of its symbol is uppercase (Bq). However, when an SI unit is spelled out in English, it should always begin with a lowercase letter (becquerel)—except in a situation where any word in that position would be
429:
These examples are useful for comparing the amount of activity of these radioactive materials, but should not be confused with the amount of exposure to ionizing radiation that these materials represent. The level of exposure and thus the
1740:
1181:(d) The hertz (one per second) is used only for periodic phenomena, and the becquerel (also one per second) is used only for stochastic processes in activity referred to a radionuclide.
1720:
555:
1725:
298:(s) to represent radioactivity to avoid potentially dangerous mistakes with prefixes. For example, 1 μs would mean 10 disintegrations per second:
1077:
1730:
1447:
1606:
1419:
2137:
1048:
548:
1415:
1311:
1771:
1344:
541:
1735:
1853:
1715:
1440:
332:(Gy) and the becquerel (Bq) were introduced in 1975. Between 1953 and 1975, absorbed dose was often measured with the
1293:
1013:
2043:
1371:
2191:
1756:
1003:
2147:
1538:
1166:
73:
1862:
1821:
1766:
1761:
1433:
582:
249:
17:
2196:
947:
909:
870:
841:
523:
1809:
1548:
890:
39:
2186:
1495:
392:
For practical applications, 1 Bq is a small unit. For example, there is roughly 0.017 g of
1095:
309:, whereas 1 μBq would mean 1 disintegration per 1 million seconds. Other names considered were
2101:
1805:
1792:
1787:
434:
received are what should be considered when assessing the effects of ionizing radiation on humans.
253:
1271:
2142:
1583:
938:
861:
1339:, J. Rydberg, "Radiochemistry and Nuclear Chemistry", 3rd edition, Butterworth-Heinemann, 2002.
1846:
1813:
1710:
1643:
988:
272:
1817:
1626:
1056:
1638:
1631:
1470:
1456:
1229:
1133:
983:
35:
8:
2127:
1653:
1563:
1008:
322:
31:
1233:
1137:
1500:
1490:
1485:
1336:
1253:
1149:
998:
676:
313:(Hz), a special name already in use for the reciprocal second, and fourier (Fr; after
2165:
2051:
1839:
1543:
1340:
1245:
1202:
1153:
1145:
1023:
993:
648:
590:
446:(Ci), an older, non-SI unit of radioactivity based on the activity of 1 gram of
341:
245:
138:
88:
317:). The hertz is now only used for periodic phenomena. While 1 Hz refers to one
1684:
1679:
1257:
1241:
1237:
1141:
518:
Graphic showing relationships between radioactivity and detected ionizing radiation
318:
205:
1918:
1578:
1553:
1375:
822:
709:
268:
106:
54:
2071:
2003:
1669:
1616:
1533:
1480:
404:
314:
295:
514:
2180:
2132:
2056:
1993:
1983:
1523:
745:
431:
2076:
2033:
2018:
1973:
1953:
1870:
1648:
1568:
1505:
1249:
619:
443:
393:
337:
276:
182:
156:
1206:
260:. For applications relating to human health this is a small quantity, and
1948:
1903:
1689:
1621:
1558:
755:
717:
353:
capitalized, such as at the beginning of a sentence or in material using
329:
280:
261:
1368:
1573:
1425:
1357:
1018:
803:
522:
The following table shows radiation quantities in SI and non-SI units.
447:
396:
in a typical human body, producing about 4,400 decays per second (Bq).
354:
333:
59:
2013:
1611:
1475:
411:
400:
361:
1893:
1674:
1220:
Lind, SC (1946), "New units for the measurement of radioactivity",
690:
2081:
2066:
2008:
1938:
1933:
1883:
1705:
1588:
1028:
900:
832:
686:
509:
2096:
1998:
1908:
1888:
1878:
257:
190:
2111:
2106:
2091:
1968:
1963:
1958:
1943:
1898:
763:
384:). Large prefixes are common for practical uses of the unit.
310:
2086:
2028:
2023:
1831:
1279:
1170:
1099:
229:
220:
214:
2061:
1988:
1978:
777:
423:
78:
1124:
Allisy, A. (1995), "From the curie to the becquerel",
62:
radiation source. Activity 3300 Bq (3.3 kBq)
1272:"SI Brochure: The International System of Units (SI)"
321:, 1 Bq refers to one event per second on average for
283:
in 1903 for their work in discovering radioactivity.
217:
208:
232:
226:
211:
372:, equivalent to 1 rutherford), GBq (gigabecquerel,
347:
223:
1389:
364:; commonly used multiples are kBq (kilobecquerel,
30:"Bq" and "MBq" redirect here. For other uses, see
2178:
1298:Harvard Natural Sciences Lecture Demonstrations
510:Relation to other radiation-related quantities
1847:
1441:
549:
1420:International Bureau of Weights and Measures
1213:
1088:
2138:Historical definitions of the SI base units
1607:Airborne radioactive particulate monitoring
1186:
1078:"What are the Units of Radiation Activity?"
1049:"Radioactivity: Radioactive Activity Doses"
1854:
1840:
1448:
1434:
556:
542:
53:
1159:
1031:(biological dose equivalent of radiation)
1455:
1356:It was adopted by the BIPM in 1975, see
1119:
1117:
1115:
513:
437:
14:
2179:
1192:
1123:
537:Ionizing radiation related quantities
294:A special name was introduced for the
1835:
1772:Radiation Protection Convention, 1960
1429:
1358:resolution 8 of the 15th CGPM meeting
1316:Museum of Radiation and Radioactivity
1112:
252:(SI). One becquerel is defined as an
1219:
336:. Decay activity was given with the
407:is about 37 kBq (1 μCi).
24:
25:
2208:
1409:
1014:Relative biological effectiveness
2161:
2160:
1387:
932:
855:
771:
703:
613:
348:Unit capitalization and prefixes
204:
27:SI derived unit of radioactivity
1381:
1362:
1350:
1329:
1304:
1004:Orders of magnitude (radiation)
340:before 1946 and often with the
264:of the unit are commonly used.
2148:System of units of measurement
1539:Computed tomography dose index
1286:
1264:
1242:10.1126/science.103.2687.761-a
1070:
1041:
13:
1:
1369:Resolution 7 of the 12th CGPM
1035:
286:
267:The becquerel is named after
250:International System of Units
1861:
442:The becquerel succeeded the
399:The activity of radioactive
360:Like any SI unit, Bq can be
7:
977:
505:1 MBq = 0.027 mCi
387:
380:), and PBq (petabecquerel,
10:
2213:
1803:
1146:10.1088/0026-1394/31/6/006
450:. The curie is defined as
40:Becquerel (disambiguation)
29:
2156:
2120:
2042:
1917:
1869:
1801:
1780:
1749:
1698:
1662:
1597:
1514:
1496:Radioactive contamination
1463:
889:
821:
744:
675:
589:
178:
152:
134:
130:
112:
102:
94:
84:
72:
67:
52:
47:
2102:minute and second of arc
1804:See also the categories
1793:Radiation-induced cancer
1788:Acute radiation syndrome
1312:"Smoke Detector (1970s)"
1294:"Radioactive Human Body"
410:The global inventory of
2143:2019 revision of the SI
376:), TBq (terabecquerel,
368:), MBq (megabecquerel,
344:between 1946 and 1975.
2192:Units of radioactivity
1644:Semiconductor detector
1600:measurement techniques
1394:Health Physics Society
1193:Harder, D (1976), "",
989:Banana equivalent dose
939:röntgen equivalent man
862:röntgen equivalent man
519:
273:Nobel Prize in Physics
1663:Protection techniques
1627:Scintillation counter
517:
438:Relation to the curie
291:1 Bq = 1 s
2044:Other accepted units
1822:Radiation protection
1639:Radiation monitoring
1632:Proportional counter
1517:quantities and units
1471:Background radiation
1457:Radiation protection
1053:radioactivity.eu.com
984:Background radiation
461:Conversion factors:
325:radioactive decays.
2128:Conversion of units
1654:Whole-body counting
1564:Mean glandular dose
1501:Radioactive sources
1234:1946Sci...103..761L
1138:1995Metro..31..467A
1009:Radiation poisoning
563:
422:(8.5 EBq, 8.5
414:is estimated to be
125:... is equal to ...
68:General information
2197:Units of frequency
1921:with special names
1491:Internal dosimetry
1486:Ionizing radiation
1374:2021-02-19 at the
1096:"BIPM - Becquerel"
999:Ionizing radiation
536:
520:
458:, or 37 GBq.
188:
180:
162:
154:
144:
136:
2174:
2173:
2052:astronomical unit
1829:
1828:
1810:Radiation effects
1781:Radiation effects
1544:Counts per minute
1345:978-0-7506-7463-8
1228:(2687): 761–762,
1024:Rutherford (unit)
994:Counts per minute
975:
974:
946:100 erg⋅g ×
869:100 erg⋅g ×
296:reciprocal second
256:of one decay per
244:) is the unit of
196:
195:
113:Conversions
16:(Redirected from
2204:
2187:SI derived units
2164:
2163:
1856:
1849:
1842:
1833:
1832:
1685:Radon mitigation
1680:Potassium iodide
1598:Instruments and
1450:
1443:
1436:
1427:
1426:
1404:
1403:
1401:
1400:
1385:
1379:
1366:
1360:
1354:
1348:
1333:
1327:
1326:
1324:
1322:
1308:
1302:
1301:
1290:
1284:
1283:
1268:
1262:
1261:
1217:
1211:
1210:
1190:
1184:
1183:
1178:
1177:
1167:"BIPM - Table 3"
1163:
1157:
1156:
1121:
1110:
1109:
1107:
1106:
1092:
1086:
1085:
1082:ehs.stanford.edu
1074:
1068:
1067:
1065:
1064:
1055:. Archived from
1045:
798:
796:
740:
738:
727:
725:
670:
669:
666:
642:
633:
631:
564:
558:
551:
544:
535:
502:
500:
494:
492:
483:
481:
472:
470:
457:
455:
421:
419:
383:
379:
375:
371:
367:
319:cycle per second
308:
307:
303:
239:
238:
235:
234:
231:
228:
225:
222:
219:
216:
213:
210:
189:
181:
174:
170:
168:
163:
155:
148:
145:
137:
57:
45:
44:
21:
2212:
2211:
2207:
2206:
2205:
2203:
2202:
2201:
2177:
2176:
2175:
2170:
2152:
2133:Metric prefixes
2116:
2038:
1920:
1913:
1865:
1860:
1830:
1825:
1824:
1806:Medical physics
1797:
1776:
1745:
1694:
1658:
1599:
1593:
1554:Equivalent dose
1516:
1510:
1459:
1454:
1422:(BIPM) web site
1412:
1407:
1398:
1396:
1386:
1382:
1376:Wayback Machine
1367:
1363:
1355:
1351:
1334:
1330:
1320:
1318:
1310:
1309:
1305:
1292:
1291:
1287:
1270:
1269:
1265:
1218:
1214:
1195:Röntgen-Blätter
1191:
1187:
1175:
1173:
1165:
1164:
1160:
1122:
1113:
1104:
1102:
1094:
1093:
1089:
1076:
1075:
1071:
1062:
1060:
1047:
1046:
1042:
1038:
980:
964:
955:
926:
917:
878:
849:
823:Equivalent dose
811:100 erg⋅g
794:
792:
736:
734:
723:
721:
667:
664:
662:
640:
629:
627:
562:
531:
512:
498:
496:
490:
488:
479:
477:
468:
466:
453:
451:
440:
417:
415:
390:
381:
377:
373:
369:
365:
350:
305:
301:
299:
289:
271:, who shared a
269:Henri Becquerel
207:
203:
187:
179:
172:
166:
164:
161:
153:
146:
143:
135:
107:Henri Becquerel
63:
43:
28:
23:
22:
15:
12:
11:
5:
2210:
2200:
2199:
2194:
2189:
2172:
2171:
2169:
2168:
2157:
2154:
2153:
2151:
2150:
2145:
2140:
2135:
2130:
2124:
2122:
2118:
2117:
2115:
2114:
2109:
2104:
2099:
2094:
2089:
2084:
2079:
2074:
2069:
2064:
2059:
2054:
2048:
2046:
2040:
2039:
2037:
2036:
2031:
2026:
2021:
2016:
2011:
2006:
2001:
1996:
1991:
1986:
1981:
1976:
1971:
1966:
1961:
1956:
1951:
1946:
1941:
1939:degree Celsius
1936:
1931:
1925:
1923:
1919:Derived units
1915:
1914:
1912:
1911:
1906:
1901:
1896:
1891:
1886:
1881:
1875:
1873:
1867:
1866:
1859:
1858:
1851:
1844:
1836:
1827:
1826:
1802:
1799:
1798:
1796:
1795:
1790:
1784:
1782:
1778:
1777:
1775:
1774:
1769:
1764:
1759:
1753:
1751:
1747:
1746:
1744:
1743:
1738:
1733:
1728:
1723:
1718:
1713:
1708:
1702:
1700:
1696:
1695:
1693:
1692:
1687:
1682:
1677:
1672:
1670:Lead shielding
1666:
1664:
1660:
1659:
1657:
1656:
1651:
1646:
1641:
1635:
1634:
1629:
1624:
1619:
1617:Geiger counter
1614:
1609:
1603:
1601:
1595:
1594:
1592:
1591:
1586:
1581:
1576:
1571:
1566:
1561:
1556:
1551:
1549:Effective dose
1546:
1541:
1536:
1534:Committed dose
1531:
1526:
1520:
1518:
1512:
1511:
1509:
1508:
1503:
1498:
1493:
1488:
1483:
1481:Health physics
1478:
1473:
1467:
1465:
1461:
1460:
1453:
1452:
1445:
1438:
1430:
1424:
1423:
1411:
1410:External links
1408:
1406:
1405:
1380:
1361:
1349:
1335:G.R. Choppin,
1328:
1303:
1285:
1278:(8 ed.).
1263:
1212:
1185:
1158:
1132:(6): 467–479,
1111:
1087:
1069:
1039:
1037:
1034:
1033:
1032:
1026:
1021:
1016:
1011:
1006:
1001:
996:
991:
986:
979:
976:
973:
972:
971:0.010 Sv
969:
966:
960:
951:
944:
941:
935:
934:
931:
928:
922:
913:
906:
903:
898:
891:Effective dose
887:
886:
885:0.010 Sv
883:
880:
874:
867:
864:
858:
857:
854:
851:
845:
838:
835:
830:
819:
818:
817:0.010 Gy
815:
812:
809:
806:
800:
799:
790:
787:
784:
781:
774:
773:
770:
767:
761:
758:
753:
742:
741:
732:
729:
715:
712:
706:
705:
702:
699:
696:
693:
684:
673:
672:
660:
657:
654:
651:
645:
644:
637:
634:
625:
622:
616:
615:
612:
609:
606:
603:
598:
587:
586:
580:
577:
574:
571:
568:
561:
560:
553:
546:
538:
527:
511:
508:
507:
506:
503:
485:
474:
439:
436:
405:smoke detector
389:
386:
349:
346:
315:Joseph Fourier
288:
285:
194:
193:
185:
176:
175:
159:
150:
149:
141:
132:
131:
128:
127:
122:
115:
114:
110:
109:
104:
100:
99:
96:
92:
91:
86:
82:
81:
76:
70:
69:
65:
64:
58:
50:
49:
26:
9:
6:
4:
3:
2:
2209:
2198:
2195:
2193:
2190:
2188:
2185:
2184:
2182:
2167:
2159:
2158:
2155:
2149:
2146:
2144:
2141:
2139:
2136:
2134:
2131:
2129:
2126:
2125:
2123:
2119:
2113:
2110:
2108:
2105:
2103:
2100:
2098:
2095:
2093:
2090:
2088:
2085:
2083:
2080:
2078:
2075:
2073:
2072:degree of arc
2070:
2068:
2065:
2063:
2060:
2058:
2055:
2053:
2050:
2049:
2047:
2045:
2041:
2035:
2032:
2030:
2027:
2025:
2022:
2020:
2017:
2015:
2012:
2010:
2007:
2005:
2002:
2000:
1997:
1995:
1992:
1990:
1987:
1985:
1982:
1980:
1977:
1975:
1972:
1970:
1967:
1965:
1962:
1960:
1957:
1955:
1952:
1950:
1947:
1945:
1942:
1940:
1937:
1935:
1932:
1930:
1927:
1926:
1924:
1922:
1916:
1910:
1907:
1905:
1902:
1900:
1897:
1895:
1892:
1890:
1887:
1885:
1882:
1880:
1877:
1876:
1874:
1872:
1868:
1864:
1857:
1852:
1850:
1845:
1843:
1838:
1837:
1834:
1823:
1819:
1815:
1814:Radioactivity
1811:
1807:
1800:
1794:
1791:
1789:
1786:
1785:
1783:
1779:
1773:
1770:
1768:
1765:
1763:
1760:
1758:
1755:
1754:
1752:
1748:
1742:
1739:
1737:
1734:
1732:
1729:
1727:
1724:
1722:
1719:
1717:
1714:
1712:
1709:
1707:
1704:
1703:
1701:
1699:Organisations
1697:
1691:
1688:
1686:
1683:
1681:
1678:
1676:
1673:
1671:
1668:
1667:
1665:
1661:
1655:
1652:
1650:
1647:
1645:
1642:
1640:
1637:
1636:
1633:
1630:
1628:
1625:
1623:
1620:
1618:
1615:
1613:
1610:
1608:
1605:
1604:
1602:
1596:
1590:
1587:
1585:
1582:
1580:
1577:
1575:
1572:
1570:
1567:
1565:
1562:
1560:
1557:
1555:
1552:
1550:
1547:
1545:
1542:
1540:
1537:
1535:
1532:
1530:
1527:
1525:
1524:Absorbed dose
1522:
1521:
1519:
1513:
1507:
1504:
1502:
1499:
1497:
1494:
1492:
1489:
1487:
1484:
1482:
1479:
1477:
1474:
1472:
1469:
1468:
1466:
1464:Main articles
1462:
1458:
1451:
1446:
1444:
1439:
1437:
1432:
1431:
1428:
1421:
1417:
1416:Derived units
1414:
1413:
1395:
1391:
1384:
1377:
1373:
1370:
1365:
1359:
1353:
1346:
1342:
1338:
1337:J.O.Liljenzin
1332:
1317:
1313:
1307:
1299:
1295:
1289:
1281:
1277:
1273:
1267:
1259:
1255:
1251:
1247:
1243:
1239:
1235:
1231:
1227:
1223:
1216:
1208:
1204:
1200:
1196:
1189:
1182:
1172:
1168:
1162:
1155:
1151:
1147:
1143:
1139:
1135:
1131:
1127:
1120:
1118:
1116:
1101:
1097:
1091:
1083:
1079:
1073:
1059:on 2020-02-20
1058:
1054:
1050:
1044:
1040:
1030:
1027:
1025:
1022:
1020:
1017:
1015:
1012:
1010:
1007:
1005:
1002:
1000:
997:
995:
992:
990:
987:
985:
982:
981:
970:
967:
965:
963:
959:
954:
950:
945:
942:
940:
937:
936:
929:
927:
925:
921:
916:
912:
907:
904:
902:
899:
896:
892:
888:
884:
881:
879:
877:
873:
868:
865:
863:
860:
859:
852:
850:
848:
844:
839:
836:
834:
831:
828:
824:
820:
816:
813:
810:
807:
805:
802:
801:
791:
788:
785:
782:
779:
776:
775:
768:
765:
762:
759:
757:
754:
751:
747:
746:Absorbed dose
743:
733:
730:
719:
716:
713:
711:
708:
707:
700:
697:
694:
692:
688:
685:
682:
678:
674:
661:
658:
655:
652:
650:
647:
646:
638:
635:
626:
623:
621:
618:
617:
610:
607:
604:
602:
599:
596:
592:
588:
584:
581:
578:
575:
572:
569:
566:
565:
559:
554:
552:
547:
545:
540:
539:
534:
532:
530:
526:
516:
504:
486:
484:= 37 kBq
476:1 μCi =
475:
473:= 37 GBq
464:
463:
462:
459:
449:
445:
435:
433:
432:absorbed dose
427:
425:
413:
408:
406:
402:
397:
395:
385:
363:
358:
356:
345:
343:
339:
335:
331:
326:
324:
320:
316:
312:
297:
292:
284:
282:
278:
274:
270:
265:
263:
259:
255:
251:
247:
246:radioactivity
243:
237:
201:
192:
186:
184:
177:
160:
158:
151:
142:
140:
133:
129:
126:
123:
121:
117:
116:
111:
108:
105:
101:
97:
93:
90:
87:
83:
80:
77:
75:
71:
66:
61:
56:
51:
46:
41:
37:
33:
19:
18:Gigabecquerel
2077:electronvolt
1928:
1818:Radiobiology
1649:Survey meter
1569:Monitor unit
1528:
1515:Measurement
1506:Radiobiology
1397:. Retrieved
1393:
1388:Baes, Fred.
1383:
1364:
1352:
1331:
1321:25 September
1319:. Retrieved
1315:
1306:
1297:
1288:
1275:
1266:
1225:
1221:
1215:
1201:(1): 49–52,
1198:
1194:
1188:
1180:
1174:. Retrieved
1161:
1129:
1125:
1103:. Retrieved
1090:
1081:
1072:
1061:. Retrieved
1057:the original
1052:
1043:
961:
957:
952:
948:
923:
919:
914:
910:
894:
875:
871:
846:
842:
826:
749:
739:10 C/kg
698:C⋅kg of air
680:
600:
594:
528:
524:
521:
487:1 Bq =
465:1 Ci =
460:
441:
428:
424:exabecquerel
409:
398:
394:potassium-40
391:
359:
351:
327:
293:
290:
281:Marie Curie
266:
262:SI multiples
241:
199:
197:
183:SI base unit
124:
119:
85:Unit of
1690:Respirators
1622:Ion chamber
1276:SI Brochure
643:10 Bq
585:equivalent
576:Derivation
501:10 μCi
173:27 pCi
103:Named after
74:Unit system
2181:Categories
1871:Base units
1750:Regulation
1399:2022-10-03
1176:2015-07-19
1126:Metrologia
1105:2012-10-24
1063:2020-02-20
1036:References
1019:Rem (unit)
797:10 Gy
656:10 s
649:rutherford
493:10 Ci
471:10 Bq
448:radium-226
420:10 Bq
403:in a home
382:10 Bq
378:10 Bq
374:10 Bq
370:10 Bq
366:10 Bq
355:title case
342:rutherford
287:Definition
240:; symbol:
169:10 Ci
147:10 Rd
139:rutherford
118:1 Bq
60:Radium-226
2014:steradian
1929:becquerel
1762:NRC (USA)
1711:HPS (USA)
1612:Dosimeter
1529:Becquerel
1476:Dosimetry
1390:"hps.org"
1154:250749337
780:per gram
671: Bq
632:10 s
601:becquerel
567:Quantity
456:10 s
412:carbon-14
401:americium
323:aperiodic
306:10 s
302:10 s
200:becquerel
48:becquerel
2166:Category
2121:See also
1894:kilogram
1863:SI units
1767:ONR (UK)
1757:IRR (UK)
1736:SRP (UK)
1675:Glovebox
1579:Roentgen
1372:Archived
1250:17836457
978:See also
933:SI unit
856:SI unit
772:SI unit
704:SI unit
691:kilogram
677:Exposure
614:SI unit
591:Activity
482: Bq
388:Examples
362:prefixed
254:activity
89:activity
2082:hectare
2067:decibel
2009:sievert
2004:siemens
1934:coulomb
1884:candela
1741:UNSCEAR
1706:Euratom
1589:Sievert
1418:on the
1282:. 2014.
1258:5343688
1230:Bibcode
1222:Science
1207:1251122
1134:Bibcode
1029:Sievert
908:J⋅kg ×
901:sievert
840:J⋅kg ×
833:sievert
728:of air
726: g
710:röntgen
687:coulomb
573:Symbol
248:in the
2097:minute
2057:dalton
1999:radian
1994:pascal
1984:newton
1909:second
1889:kelvin
1879:ampere
1820:, and
1378:(1964)
1343:
1256:
1248:
1205:
1152:
786:erg⋅g
783:erg/g
277:Pierre
258:second
120:in ...
95:Symbol
38:, and
2112:tonne
2107:neper
2092:litre
2034:weber
2019:tesla
1974:lumen
1969:katal
1964:joule
1959:hertz
1954:henry
1944:farad
1899:metre
1254:S2CID
1150:S2CID
968:1971
930:1977
882:1971
853:1977
814:1953
789:1950
769:1974
731:1928
722:0.001
701:1974
695:C/kg
659:1946
636:1953
620:curie
611:1974
579:Year
570:Unit
444:curie
338:curie
311:hertz
275:with
165:2.703
157:curie
2087:hour
2029:watt
2024:volt
1949:gray
1904:mole
1731:IRPA
1726:ICRP
1721:ICRU
1716:IAEA
1559:Gray
1341:ISBN
1323:2023
1280:BIPM
1246:PMID
1203:PMID
1171:BIPM
1100:BIPM
943:rem
866:rem
808:rad
766:⋅kg
756:gray
735:2.58
689:per
557:edit
550:talk
543:view
330:gray
328:The
304:) =
279:and
198:The
2062:day
1989:ohm
1979:lux
1584:Rem
1574:Rad
1238:doi
1226:103
1142:doi
905:Sv
837:Sv
804:rad
793:1.0
778:erg
760:Gy
724:293
718:esu
668:000
665:000
653:Rd
639:3.7
628:3.7
624:Ci
605:Bq
497:2.7
489:2.7
480:000
467:3.7
452:3.7
426:).
416:8.5
334:rad
36:MBQ
2183::
1816:,
1812:,
1808:,
1392:.
1314:.
1296:.
1274:.
1252:,
1244:,
1236:,
1224:,
1199:29
1197:,
1179:.
1169:.
1148:,
1140:,
1130:32
1128:,
1114:^
1098:.
1080:.
1051:.
956:×
918:×
897:)
829:)
752:)
720:/
714:R
683:)
608:s
597:)
583:SI
495:=
478:37
357:.
242:Bq
171:≅
98:Bq
79:SI
34:,
32:BQ
1855:e
1848:t
1841:v
1449:e
1442:t
1435:v
1402:.
1347:.
1325:.
1300:.
1260:.
1240::
1232::
1209:.
1144::
1136::
1108:.
1084:.
1066:.
962:T
958:W
953:R
949:W
924:T
920:W
915:R
911:W
895:E
893:(
876:R
872:W
847:R
843:W
827:H
825:(
795:×
764:J
750:D
748:(
737:×
681:X
679:(
663:1
641:×
630:×
595:A
593:(
529:R
525:W
499:×
491:×
469:×
454:×
418:×
300:(
236:/
233:l
230:ɛ
227:r
224:ˈ
221:ə
218:k
215:ɛ
212:b
209:ˌ
206:/
202:(
191:s
167:×
42:.
20:)
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