Knowledge

Siemens (unit)

Source 📝

1156: 565:
The inverted capital omega symbol (℧), while not an official SI abbreviation, is less likely to be confused with a variable than the letter "S" when writing the symbol by hand. The usual typographical distinctions (such as italic for variables and roman for units) are difficult to maintain. Likewise,
745:
SINGH, S., GAUTAM, P. K., KUMAR, P., BISWAS, A., & SARKAR, T. (2021). Delineating the characteristics of saline water intrusion in the coastal aquifers of Tamil Nadu, India by analysing the Dar-Zarrouk parameters. Contributions to Geophysics & Geodesy,
462:
For a device with a conductance of one siemens, the electric current through the device will increase by one ampere for every increase of one volt of electric potential difference across the device.
242:
is used both for the singular and plural. Like other SI units named after people, the symbol (S) is capitalized but the name of the unit is not. For the siemens this distinguishes it from the
323: 736:
Al Dahaan, S., Al-Ansari, N., & Knutsson, S. (2016). Influence of groundwater hypothetical salts on electrical conductivity total dissolved solids. Engineering, 8(11), 823-830.
671: 430: 706:
Available online. Thomson helpfully added that the proper pronunciation of "mho" could be obtained by taking a phonograph and turning it backwards.
465:
The conductance of a resistor with a resistance of five ohms, for example, is (5 Ω), which is equal to a conductance of 200 mS.
1131: 228: 224: 1185: 675: 250: 266: 67: 847: 765: 282: 551:
refers to the mho as an "unaccepted special name for an SI unit", and indicates that it should be strictly avoided.
1037: 697: 1141: 52: 856: 194: 1190: 1180: 674:. NIST Guide to the SI (Report). National Institute of Standards and Technology. 2008. Archived from 716: 1095: 361: 1136: 840: 652: 633: 198: 606: 474: 206: 202: 182: 31: 8: 1121: 517: 17: 704:. Institution of Civil Engineers. pp. 149–174 at p 171 (Lecture given 3 May 1883). 235: 85: 1159: 1045: 833: 761: 719:. NIST Guide to the SI (Report). National Institute of Standards and Technology. 2008 579: 493: 333: 912: 1065: 521: 262: 1174: 1126: 1050: 987: 977: 1070: 1027: 1012: 967: 947: 864: 558:
is used universally in science and often in electrical applications, while
117: 942: 897: 814: 802: 186: 781: 440: 210: 190: 197:(SI). Conductance, susceptance, and admittance are the reciprocals of 1007: 922: 516:
spelled backwards as the reciprocal of one ohm, at the suggestion of
660:. 14th General Conference on Weights and Measures. 1971. p. 78. 641:. 14th General Conference on Weights and Measures. 1971. p. 53. 887: 125: 758:
Applications of Environmental Aquatic Chemistry: A practical guide
209:
respectively; hence one siemens is equal to the reciprocal of one
1075: 1060: 1002: 932: 927: 877: 575: 341: 38: 672:"Chapter 9: Rules and Style Conventions for Spelling Unit Names" 231:
approved the addition of the siemens as a derived unit in 1971.
1090: 992: 902: 882: 872: 448: 243: 137: 133: 1105: 1100: 1085: 962: 957: 952: 937: 892: 525: 129: 37:"Siemen" redirects here. Not to be confused with the company 1080: 1022: 1017: 825: 806: 549:
Guide for the Use of the International System of Units (SI)
544: 502: 456: 1055: 982: 972: 520:(Lord Kelvin) in 1883. Its symbol is an inverted capital 512: 57: 574:), potentially causing confusion. So, for example, a 364: 344:(electrical potential difference) across the object. 285: 499: 496: 253:, is measured in units of siemens per metre (S/m). 424: 317: 1172: 566:it is difficult to distinguish the symbol "S" ( 318:{\displaystyle G={\frac {1}{R}}={\frac {I}{V}}} 841: 1132:Historical definitions of the SI base units 562:is still used in some electronic contexts. 848: 834: 782:"Siemens (unit of electrical conductance)" 617:, at an international conference in 1881. 229:General Conference on Weights and Measures 702:The Practical Applications of Electricity 695: 620: 30:For the deprecated "mercury unit", see 14: 1173: 755: 829: 815:"Different units named after Siemens" 645: 510:). The name is derived from the word 803:"The International System of Units" 24: 586:might alternatively be written as 415: 405: 383: 369: 25: 1202: 795: 717:"Chapter 5: Units Outside the SI" 698:"Electrical Units of Measurement" 223:. The siemens was adopted by the 217:) and is also referred to as the 1155: 1154: 492: 480:A historical equivalent for the 1186:Units of electrical conductance 27:SI unit of electric conductance 1142:System of units of measurement 774: 749: 739: 730: 709: 689: 664: 626: 594:(most common in the 1930s) or 419: 401: 395: 379: 372: 366: 13: 1: 425:{\displaystyle \mathrm {} ==} 256: 195:International System of Units 855: 605:had officially replaced the 238:. In English, the same word 7: 570:) from the lower-case "s" ( 271:and electrical conductance 10: 1207: 760:. CRC Press. p. 109. 756:Weiner, Eugene R. (2013). 472: 261:For an element conducting 36: 29: 1150: 1114: 1036: 911: 863: 696:Thomson, William (1884). 351:for the conductance  246:, symbol (lower case) s. 157: 143: 113: 109: 91: 81: 73: 63: 51: 46: 1096:minute and second of arc 236:Ernst Werner von Siemens 234:The unit is named after 219: 86:Ernst Werner von Siemens 1137:2019 revision of the SI 336:through the object and 251:electrical conductivity 118:SI base units 468: 426: 319: 267:electrical resistance 249:The related property, 227:in 1935, and the 14th 427: 320: 1038:Other accepted units 621:Notes and references 475:MHO (disambiguation) 473:For other uses, see 362: 283: 187:electric susceptance 183:electric conductance 68:electric conductance 32:Siemens mercury unit 1122:Conversion of units 518:Sir William Thomson 191:electric admittance 104:... is equal to ... 1191:Werner von Siemens 915:with special names 422: 315: 165:    159:    151:    145:    123:    115:    1168: 1167: 1046:astronomical unit 539:INVERTED OHM SIGN 313: 300: 181:) is the unit of 171: 170: 92:Conversions 16:(Redirected from 1198: 1181:SI derived units 1158: 1157: 850: 843: 836: 827: 826: 822: 810: 790: 789: 786:www.tech-faq.com 778: 772: 771: 753: 747: 743: 737: 734: 728: 727: 725: 724: 713: 707: 705: 693: 687: 686: 684: 683: 668: 662: 661: 659: 649: 643: 642: 640: 630: 597: 593: 589: 585: 580:transconductance 540: 537: 534: 532: 509: 508: 505: 504: 501: 498: 454: 446: 438: 431: 429: 428: 423: 418: 413: 408: 394: 393: 375: 339: 334:electric current 331: 324: 322: 321: 316: 314: 306: 301: 293: 274: 270: 216: 166: 160: 152: 146: 124: 116: 44: 43: 21: 1206: 1205: 1201: 1200: 1199: 1197: 1196: 1195: 1171: 1170: 1169: 1164: 1146: 1127:Metric prefixes 1110: 1032: 914: 907: 859: 854: 813: 801: 798: 793: 788:. 6 April 2019. 780: 779: 775: 768: 754: 750: 744: 740: 735: 731: 722: 720: 715: 714: 710: 694: 690: 681: 679: 670: 669: 665: 657: 651: 650: 646: 638: 632: 631: 627: 623: 595: 591: 587: 583: 538: 535: 530: 529: 495: 491: 478: 471: 452: 444: 436: 414: 409: 404: 386: 382: 365: 363: 360: 359: 337: 329: 305: 292: 284: 281: 280: 276:are defined as 272: 268: 259: 214: 164: 158: 150: 144: 122: 114: 42: 35: 28: 23: 22: 15: 12: 11: 5: 1204: 1194: 1193: 1188: 1183: 1166: 1165: 1163: 1162: 1151: 1148: 1147: 1145: 1144: 1139: 1134: 1129: 1124: 1118: 1116: 1112: 1111: 1109: 1108: 1103: 1098: 1093: 1088: 1083: 1078: 1073: 1068: 1063: 1058: 1053: 1048: 1042: 1040: 1034: 1033: 1031: 1030: 1025: 1020: 1015: 1010: 1005: 1000: 995: 990: 985: 980: 975: 970: 965: 960: 955: 950: 945: 940: 935: 933:degree Celsius 930: 925: 919: 917: 913:Derived units 909: 908: 906: 905: 900: 895: 890: 885: 880: 875: 869: 867: 861: 860: 853: 852: 845: 838: 830: 824: 823: 811: 797: 796:External links 794: 792: 791: 773: 767:978-1439853320 766: 748: 738: 729: 708: 688: 663: 644: 624: 622: 619: 470: 467: 433: 432: 421: 417: 412: 407: 403: 400: 397: 392: 389: 385: 381: 378: 374: 371: 368: 355:is defined by 326: 325: 312: 309: 304: 299: 296: 291: 288: 263:direct current 258: 255: 169: 168: 162: 155: 154: 148: 141: 140: 120: 111: 110: 107: 106: 101: 94: 93: 89: 88: 83: 79: 78: 75: 71: 70: 65: 61: 60: 55: 49: 48: 26: 9: 6: 4: 3: 2: 1203: 1192: 1189: 1187: 1184: 1182: 1179: 1178: 1176: 1161: 1153: 1152: 1149: 1143: 1140: 1138: 1135: 1133: 1130: 1128: 1125: 1123: 1120: 1119: 1117: 1113: 1107: 1104: 1102: 1099: 1097: 1094: 1092: 1089: 1087: 1084: 1082: 1079: 1077: 1074: 1072: 1069: 1067: 1066:degree of arc 1064: 1062: 1059: 1057: 1054: 1052: 1049: 1047: 1044: 1043: 1041: 1039: 1035: 1029: 1026: 1024: 1021: 1019: 1016: 1014: 1011: 1009: 1006: 1004: 1001: 999: 996: 994: 991: 989: 986: 984: 981: 979: 976: 974: 971: 969: 966: 964: 961: 959: 956: 954: 951: 949: 946: 944: 941: 939: 936: 934: 931: 929: 926: 924: 921: 920: 918: 916: 910: 904: 901: 899: 896: 894: 891: 889: 886: 884: 881: 879: 876: 874: 871: 870: 868: 866: 862: 858: 851: 846: 844: 839: 837: 832: 831: 828: 820: 816: 812: 808: 804: 800: 799: 787: 783: 777: 769: 763: 759: 752: 742: 733: 718: 712: 703: 699: 692: 678:on 2019-05-06 677: 673: 667: 656: 655: 648: 637: 636: 629: 625: 618: 616: 612: 610: 604: 599: 596:2.2 mA/V 581: 577: 573: 569: 563: 561: 557: 552: 550: 546: 542: 527: 523: 519: 515: 514: 507: 489: 488: 483: 476: 466: 463: 460: 458: 450: 442: 410: 398: 390: 387: 376: 358: 357: 356: 354: 350: 345: 343: 335: 310: 307: 302: 297: 294: 289: 286: 279: 278: 277: 275: 264: 254: 252: 247: 245: 241: 237: 232: 230: 226: 222: 221: 212: 208: 204: 200: 196: 192: 188: 184: 180: 176: 163: 156: 149: 142: 139: 135: 131: 127: 121: 119: 112: 108: 105: 102: 100: 96: 95: 90: 87: 84: 80: 76: 72: 69: 66: 62: 59: 56: 54: 50: 45: 40: 33: 19: 1071:electronvolt 997: 818: 805:(brochure). 785: 776: 757: 751: 741: 732: 721:. Retrieved 711: 701: 691: 680:. Retrieved 676:the original 666: 653: 647: 634: 628: 614: 613:, a unit of 608: 602: 600: 592:2200 μ℧ 571: 567: 564: 559: 555: 554:The SI term 553: 548: 543: 511: 486: 485: 481: 479: 464: 461: 434: 352: 348: 346: 327: 260: 248: 239: 233: 218: 178: 174: 172: 103: 98: 64:Unit of 588:2.2 m℧ 584:2.2 mS 147:inverse ohm 82:Named after 53:Unit system 1175:Categories 865:Base units 723:2017-12-22 682:2017-12-22 615:resistance 257:Definition 199:resistance 1008:steradian 923:becquerel 819:sizes.com 388:− 384:Ω 347:The unit 207:impedance 203:reactance 177:(symbol: 97:1 S 1160:Category 1115:See also 888:kilogram 857:SI units 821:. Units. 536:℧ 1076:hectare 1061:decibel 1003:sievert 998:siemens 928:coulomb 878:candela 654:Minutes 635:Minutes 609:siemens 576:pentode 572:seconds 568:siemens 556:siemens 524:letter 484:is the 482:siemens 455:is the 447:is the 439:is the 349:siemens 342:voltage 340:is the 332:is the 240:siemens 193:in the 175:siemens 136:⋅ 132:⋅ 128:⋅ 47:siemens 39:Siemens 1091:minute 1051:dalton 993:radian 988:pascal 978:newton 903:second 883:kelvin 873:ampere 764:  746:51(2). 533: 531:U+2127 451:, and 449:ampere 435:where 328:where 244:second 205:, and 189:, and 99:in ... 74:Symbol 1106:tonne 1101:neper 1086:litre 1028:weber 1013:tesla 968:lumen 963:katal 958:joule 953:hertz 948:henry 938:farad 893:metre 658:(PDF) 639:(PDF) 611:unit" 607:old " 526:omega 522:Greek 1081:hour 1023:watt 1018:volt 943:gray 898:mole 807:BIPM 762:ISBN 601:The 545:NIST 457:volt 173:The 1056:day 983:ohm 973:lux 603:ohm 590:or 582:of 578:’s 560:mho 547:'s 513:ohm 487:mho 469:Mho 441:ohm 225:IEC 220:mho 211:ohm 167:1 ℧ 161:mho 153:1 Ω 18:Mho 1177:: 817:. 784:. 700:. 598:. 541:. 528:: 503:oʊ 459:. 443:, 265:, 201:, 185:, 126:kg 58:SI 849:e 842:t 835:v 809:. 770:. 726:. 685:. 506:/ 500:m 497:ˈ 494:/ 490:( 477:. 453:V 445:A 437:Ω 420:] 416:V 411:/ 406:A 402:[ 399:= 396:] 391:1 380:[ 377:= 373:] 370:S 367:[ 353:G 338:V 330:I 311:V 308:I 303:= 298:R 295:1 290:= 287:G 273:G 269:R 215:Ω 213:( 179:S 138:A 134:s 130:m 77:S 41:. 34:. 20:)

Index

Mho
Siemens mercury unit
Siemens
Unit system
SI
electric conductance
Ernst Werner von Siemens
SI base units
kg
m
s
A
electric conductance
electric susceptance
electric admittance
International System of Units
resistance
reactance
impedance
ohm
mho
IEC
General Conference on Weights and Measures
Ernst Werner von Siemens
second
electrical conductivity
direct current
electrical resistance R and electrical conductance G
electric current
voltage

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.