Knowledge

Unit of length

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In atomic physics, sub-atomic physics, and cosmology, the preferred unit of length is often related to a chosen fundamental physical constant, or combination thereof. This is often a characteristic radius or wavelength of a particle. Some common
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of 66 feet (20 m) which is subdivided into 4 rods, each of 16.5 ft or 100 links of 0.66 feet. A link is abbreviated "lk", and links "lks", in old deeds and land surveys done for the government.
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In everyday conversation, and in informal literature, it is common to see lengths measured in units of objects of which everyone knows the approximate width. Common examples are:
1915: 551:. For example, the length two and a half meters is usually recorded as 2500 mm or 2.5 m; it would be considered non-standard to record this length as 250 cm. 2602: 223:, as in millimeter or kilometer, thus producing systematic decimal multiples and submultiples of the base unit that span many orders of magnitude. For example, a 1298: 1715: 2595: 1960: 240: 1910: 1491:"The Apache Point Observatory Lunar Laser-ranging Operation (APOLLO): Two Years of Millimeter-Precision Measurements of the Earth-Moon Range" 146:
refers to any arbitrarily chosen and accepted reference standard for measurement of length. The most common units in modern use are the
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Metrication in Australia : a review of the effectiveness of policies and procedures in Australia's conversion to the metric system
2507: 1429: 1595:. Amsterdam; Washington, DC: IOS Press, 2001. Proceedings of the International School of Physics "Enrico Fermi". pp. 142ā€“143. 1200: 2502: 2219: 2039: 2538: 2533: 2487: 2138: 2128: 2029: 1116: 102: 2543: 2113: 2051: 1708: 1120: 74: 2477: 2264: 2517: 2492: 2345: 2093: 1359: 158:
are still used for some purposes in the United Kingdom and some other countries. The metric system is sub-divided into
81: 2401: 1684: 1600: 1405: 1281: 1253: 121: 1400:. Australia. Department of Industry, Technology, and Commerce. Canberra: Australian Govt. Pub. Service. p. 94. 2371: 2335: 2244: 1982: 1920: 484:
Determination of the rod, using the length of the left foot of 16 randomly chosen people coming from church service
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Units of Weight and Measure (United States Customary and Metric): Definitions and Tables of Equivalents, Issue,233
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use feet for altitude worldwide (except in Russia and China) and nautical miles for distance.
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Encyclopaedia of Scientific Units, Weights, and Measures: Their SI Equivalences and Origins
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The Compton wavelength (or reduced Compton wavelength) of any fundamental particle
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of a meter. Other non-SI units are derived from decimal multiples of the meter.
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A ruler, depicting two customary units of length, the centimeter and the inch
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The basic unit of length in the imperial and U.S. customary systems is the
194: 1467: 620:. Average distance between the center of Earth and the center of the Moon. 2163: 1894: 1793: 1693: 1395: 1303:. U.S. Department of Commerce, National Bureau of Standards. pp. 3ā€“4 1274:
Dictionary Of International Trade: Handbook Of The Global Trade Community
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American surveyors use a decimal-based system of measurement devised by
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Battat, J. B. R.; Murphy, T. W.; Adelberger, E. G. (January 2009).
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Common imperial units and U.S. customary units of length include:
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Moritz, H. (March 2000). "Geodetic Reference System 1980".
1142: 420: 413: 397: 367: 150:, used in every country globally. In the United States the 1677:
A Measure of All Things: The Story of Man and Measurement
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in 1966 and the units used for measurement of length are
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Quinn, T.J.; Leschiutta, S.; Tavella, P. (August 2000).
640:. Approximately the distance between the Earth and Sun. 1647:
The NIST Reference on Constants, Units, and Uncertainty
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The NIST Reference on Constants, Units, and Uncertainty
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Recent advances in metrology and fundamental constants
1588: 1488: 1271: 547:(cm) are avoided as they cause confusion when reading 219:. Other SI units are derived from the meter by adding 2610: 1393: 62:. Unsourced material may be challenged and removed. 1343: 1241: 1201:List of unusual units of measurement Ā§ Length 508:(also called pole or perch) (quarter of a chain, 5 201:, defined as "the length of the path travelled by 197:in the International System of Units (SI) is the 2760: 807:The reduced Compton wavelength of the electron 1537: 2596: 1709: 1584: 1582: 1580: 1578: 904:The reduced wavelength of hydrogen radiation 1482: 1346:A dictionary of weights, measures, and units 1341: 1272:Hinkelman, Edward G.; Sibylla Putzi (2005). 1157:and other equestrian activities keep alive: 707:14.4 billion light-years or 4.55 gigaparsecs 1267: 1265: 1096:(the "double pace" of about 5 feet used in 531:The Australian building trades adopted the 2603: 2589: 1723: 1716: 1702: 1575: 1531: 1381: 1239: 1514: 1439: 122:Learn how and when to remove this message 1674: 1335: 1262: 1191:List of conversion factors Ā§ Length 1029:Natural units based on the electronvolt 479: 133: 774:The Compton wavelength of the electron 663:. The distance that light travels in a 439:In addition, the following are used by 215:seconds." It is approximately equal to 14: 2761: 1553: 1445: 1296: 721:of length are included in this table: 491:in the United States continue to use: 241:centimeterā€“gramā€“second system of units 2584: 1697: 1117:List of humorous units of measurement 1350:. Oxford University Press. pp.  1121:List of unusual units of measurement 205:in vacuum during a time interval of 60:adding citations to reliable sources 31: 1495:Astronomical Society of the Pacific 1315: 554: 24: 1746:International System of Units (SI) 1668: 1565:, International Astronomical Union 1276:. World Trade Press. p. 245. 526: 243:, the basic unit of length is the 25: 2780: 456:(one minute of arc of latitude = 374:by international treaty in 1959. 1297:Judson, Lewis Van Hagen (1960). 1180: ā‰ˆ 8 feet (2.4 m) 347: 165: 36: 1635: 1609: 47:needs additional citations for 1617:"Compton wavelength over 2 pi" 1562:The IAU and astronomical units 1538:Geoff Brumfiel (14 Sep 2012). 1422: 1387: 1375: 1290: 1233: 741:The classical electron radius 13: 1: 1756:US customary units (USCS/USC) 1394:Wilks, Kevin Joseph. (1992). 1240:Cardarelli, FranƧois (2003). 1226: 1206:Medieval weights and measures 358:United States customary units 183:International System of Units 2743:Orders of magnitude (length) 2627:Astronomical system of units 1211:Orders of magnitude (length) 1043: 1031: 1024: 1005: 994: 975: 965: 944: 934: 906: 899: 873: 844: 837: 809: 802: 776: 769: 743: 583:Astronomical system of units 576: 475: 423:(5280 feet, 1609.344 m) 189:Orders of magnitude (length) 7: 1196:List of examples of lengths 1184: 1138:field (100 yards in length) 1110: 1063:units of distance include: 464: 362:English units Ā§ length 10: 2785: 1430:"Metrication in Australia" 1114: 1053: 1049: 739: 711: 580: 571: 563:in 1620. The base unit is 410:(12 inches, 0.3048 m) 351: 272: 186: 180: 169: 2730: 2635: 2622: 2552: 2526: 2470: 2410: 2364: 2283: 2172: 1975: 1941: 1934: 1903: 1872: 1865: 1818: 1809:English Engineering Units 1776: 1738: 1731: 1132:(9.5ā€“11 meters in length) 434: 234: 154:are also in use. British 27:Reference value of length 1149: 999:Quantum chromodynamics ( 1848:Quantum chromodynamical 1145:(around 80 micrometers) 1056:English units of length 416:(3 feet, 0.9144 m) 2738:Cosmic distance ladder 1961:centimetreā€“gramā€“second 1725:Systems of measurement 1675:Whitelaw, Ian (2007). 867:of the hydrogen atom ( 485: 430:3 miles (4,800 m) 139: 2483:Biblical and Talmudic 1949:metreā€“kilogramā€“second 1468:10.1007/s001900050278 1342:Donald Fenna (2002). 1216:System of measurement 1174:mile (201.168 m) 1141:Thickness of a human 483: 370:, defined as exactly 318:Norwegian/Swedish mil 176: 137: 1221:Units of measurement 603:ā‰ˆ 6,371 km 152:U.S. customary units 56:improve this article 2748:Conversion of units 1507:2009PASP..121...29B 1460:2000JGeod..74..128. 1955:metreā€“tonneā€“second 1751:UK imperial system 1448:Journal of Geodesy 733:Length, in meters 486: 162:and non-SI units. 140: 2756: 2755: 2685:Astronomical unit 2578: 2577: 2466: 2465: 1930: 1929: 1921:Footā€“poundā€“second 1861: 1860: 1838:Heavisideā€“Lorentz 1136:American football 1130:Double-decker bus 1047: 1046: 1003:) unit of length 624:astronomical unit 345: 344: 132: 131: 124: 106: 16:(Redirected from 2776: 2605: 2598: 2591: 2582: 2581: 2045:Mesures usuelles 1939: 1938: 1870: 1869: 1736: 1735: 1718: 1711: 1704: 1695: 1694: 1690: 1662: 1661: 1659: 1657: 1639: 1633: 1632: 1630: 1628: 1613: 1607: 1606: 1586: 1573: 1572: 1571: 1570: 1557: 1551: 1550: 1548: 1546: 1535: 1529: 1528: 1518: 1486: 1480: 1479: 1443: 1437: 1436: 1434: 1426: 1420: 1419: 1391: 1385: 1384:, pp. 29ā€“30 1379: 1373: 1372: 1370: 1368: 1349: 1339: 1333: 1332: 1330: 1329: 1319: 1313: 1312: 1310: 1308: 1294: 1288: 1287: 1269: 1260: 1259: 1247: 1237: 1173: 1172: 1168: 1041: 1039: 1022: 1020: 992: 990: 963: 961: 957: 932: 930: 926: 923: 920: 897: 895: 891: 888: 835: 833: 829: 826: 800: 798: 794: 791: 767: 765: 761: 758: 727:Atomic property 724: 723: 701: 699: 693: 691: 688: 685: 682: 662: 660: 657: 654: 651: 639: 637: 634: 631: 619: 617: 555:Surveyor's trade 521: 517: 516: 512: 501: 459: 403: 393: 392: 388: 373: 260: 259: 256: 255: 251: 230: 218: 214: 213: 209: 127: 120: 116: 113: 107: 105: 71:"Unit of length" 64: 40: 32: 21: 2784: 2783: 2779: 2778: 2777: 2775: 2774: 2773: 2769:Units of length 2759: 2758: 2757: 2752: 2726: 2674: 2671: 2654: 2648: 2645: 2631: 2618: 2612:Units of length 2609: 2579: 2574: 2548: 2522: 2462: 2406: 2360: 2279: 2168: 1971: 1926: 1899: 1857: 1814: 1772: 1727: 1722: 1687: 1671: 1669:Further reading 1666: 1665: 1655: 1653: 1643:"Planck length" 1641: 1640: 1636: 1626: 1624: 1615: 1614: 1610: 1603: 1587: 1576: 1568: 1566: 1559: 1558: 1554: 1544: 1542: 1536: 1532: 1487: 1483: 1444: 1440: 1432: 1428: 1427: 1423: 1408: 1392: 1388: 1382:Cardarelli 2003 1380: 1376: 1366: 1364: 1362: 1340: 1336: 1327: 1325: 1321: 1320: 1316: 1306: 1304: 1295: 1291: 1284: 1270: 1263: 1256: 1238: 1234: 1229: 1187: 1170: 1166: 1165: 1152: 1123: 1113: 1058: 1052: 1037: 1035: 1018: 1016: 1013: 988: 986: 983: 959: 955: 953: 950: 928: 924: 921: 918: 916: 913: 893: 889: 886: 884: 881: 854: 831: 827: 824: 822: 819: 796: 792: 789: 787: 784: 763: 759: 756: 754: 751: 714: 697: 695: 689: 686: 683: 680: 678: 677:pc ā‰ˆ  658: 655: 652: 649: 647: 646:ly ā‰ˆ  635: 632: 629: 627: 626:au. Defined as 615: 613: 602: 599: 585: 579: 574: 557: 529: 527:Building trades 519: 514: 510: 509: 499: 478: 467: 457: 437: 401: 390: 386: 385: 371: 364: 352:Main articles: 350: 253: 249: 248: 237: 228: 216: 211: 207: 206: 191: 185: 179: 174: 168: 128: 117: 111: 108: 65: 63: 53: 41: 28: 23: 22: 18:Units of length 15: 12: 11: 5: 2782: 2772: 2771: 2754: 2753: 2751: 2750: 2745: 2740: 2735: 2731: 2728: 2727: 2725: 2724: 2718: 2712: 2706: 2700: 2694: 2688: 2682: 2676: 2672: 2669: 2663: 2657: 2652: 2646: 2643: 2636: 2633: 2632: 2630: 2629: 2623: 2620: 2619: 2608: 2607: 2600: 2593: 2585: 2576: 2575: 2573: 2572: 2567: 2562: 2560:Absolute scale 2556: 2554: 2550: 2549: 2547: 2546: 2541: 2536: 2530: 2528: 2524: 2523: 2521: 2520: 2515: 2510: 2505: 2500: 2495: 2490: 2485: 2480: 2474: 2472: 2468: 2467: 2464: 2463: 2461: 2460: 2455: 2450: 2445: 2440: 2435: 2430: 2425: 2420: 2414: 2412: 2408: 2407: 2405: 2404: 2399: 2394: 2389: 2384: 2379: 2374: 2368: 2366: 2362: 2361: 2359: 2358: 2353: 2348: 2343: 2338: 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1525:10.1086/596748 1516:10.1086/596748 1501:(875): 29ā€“40. 1481: 1454:(1): 128ā€“133. 1438: 1421: 1406: 1386: 1374: 1361:978-0198605225 1360: 1334: 1314: 1289: 1282: 1261: 1254: 1231: 1230: 1228: 1225: 1224: 1223: 1218: 1213: 1208: 1203: 1198: 1193: 1186: 1183: 1182: 1181: 1175: 1151: 1148: 1147: 1146: 1139: 1133: 1112: 1109: 1108: 1107: 1101: 1091: 1085: 1080: 1075: 1070: 1051: 1048: 1045: 1044: 1042: 1033: 1030: 1026: 1025: 1023: 1014: 1009: 1004: 996: 995: 993: 984: 979: 974: 967: 966: 964: 951: 946: 943: 936: 935: 933: 914: 911: 905: 901: 900: 898: 882: 877: 872: 860: 859: 857: 855: 850: 843: 839: 838: 836: 820: 815: 808: 804: 803: 801: 785: 780: 775: 771: 770: 768: 752: 747: 742: 738: 737: 734: 731: 728: 713: 710: 709: 708: 702: 672: 641: 621: 607:Lunar distance 604: 600: 597: 590:measure uses: 581:Main article: 578: 575: 573: 570: 565:Gunter's chain 556: 553: 528: 525: 524: 523: 503: 500:20.1168 m 498:(22 yards, or 477: 474: 466: 463: 462: 461: 451: 436: 433: 432: 431: 424: 419:(terrestrial) 417: 411: 405: 395: 354:Imperial units 349: 346: 343: 342: 341:0.1 picometer 339: 336: 330: 329: 328:10,000 meters 326: 324: 314: 313: 307: 304: 300: 299: 293: 290: 284: 283: 278: 275: 271: 270: 267: 264: 236: 233: 217:1.0936 yd 181:Main article: 178: 175: 170:Main article: 167: 164: 156:Imperial units 144:unit of length 130: 129: 44: 42: 35: 26: 9: 6: 4: 3: 2: 2781: 2770: 2767: 2766: 2764: 2749: 2746: 2744: 2741: 2739: 2736: 2733: 2732: 2729: 2722: 2719: 2716: 2713: 2710: 2707: 2704: 2701: 2698: 2695: 2692: 2689: 2686: 2683: 2680: 2677: 2667: 2664: 2661: 2658: 2655: 2641: 2638: 2637: 2634: 2628: 2625: 2624: 2621: 2617: 2613: 2606: 2601: 2599: 2594: 2592: 2587: 2586: 2583: 2571: 2568: 2566: 2563: 2561: 2558: 2557: 2555: 2551: 2545: 2542: 2540: 2537: 2535: 2532: 2531: 2529: 2527:List articles 2525: 2519: 2516: 2514: 2511: 2509: 2506: 2504: 2501: 2499: 2496: 2494: 2491: 2489: 2486: 2484: 2481: 2479: 2476: 2475: 2473: 2469: 2459: 2456: 2454: 2451: 2449: 2446: 2444: 2441: 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Macmillan. 1678: 1673: 1672: 1652: 1648: 1644: 1638: 1622: 1618: 1612: 1604: 1602:9781586031671 1598: 1594: 1593: 1585: 1583: 1581: 1579: 1564: 1563: 1556: 1541: 1534: 1526: 1522: 1517: 1512: 1508: 1504: 1500: 1496: 1492: 1485: 1477: 1473: 1469: 1465: 1461: 1457: 1453: 1449: 1442: 1431: 1425: 1417: 1413: 1409: 1407:0-644-24860-2 1403: 1399: 1398: 1390: 1383: 1378: 1363: 1357: 1353: 1348: 1347: 1338: 1324: 1318: 1302: 1301: 1293: 1285: 1283:9781885073723 1279: 1275: 1268: 1266: 1257: 1255:9781852336820 1251: 1246: 1245: 1236: 1232: 1222: 1219: 1217: 1214: 1212: 1209: 1207: 1204: 1202: 1199: 1197: 1194: 1192: 1189: 1188: 1179: 1176: 1164: =  1163: 1160: 1159: 1158: 1156: 1144: 1140: 1137: 1134: 1131: 1128: 1127: 1126: 1122: 1118: 1105: 1102: 1099: 1095: 1092: 1089: 1086: 1084: 1081: 1079: 1076: 1074: 1071: 1069: 1066: 1065: 1064: 1062: 1057: 1034: 1028: 1027: 1015: 1012: 1008: 1002: 998: 997: 985: 982: 978: 972: 969: 968: 952: 949: 942: 941:Planck length 938: 937: 915: 910: 903: 902: 883: 880: 876: 870: 866: 862: 861: 858: 856: 853: 849: 848: 841: 840: 821: 818: 814: 813: 806: 805: 786: 783: 779: 773: 772: 753: 750: 746: 740: 735: 732: 729: 726: 725: 722: 720: 719:natural units 706: 705:Hubble length 703: 676: 673: 670: 666: 645: 642: 625: 622: 612: ā‰ˆ  611: 608: 605: 596: 593: 592: 591: 589: 584: 569: 566: 562: 561:Edmund Gunter 552: 550: 546: 542: 538: 534: 533:metric system 520:5.0292 m 507: 504: 497: 494: 493: 492: 490: 482: 473: 471: 455: 454:nautical mile 452: 449: 446: 445: 444: 442: 429: 425: 422: 418: 415: 412: 409: 406: 399: 396: 383: 380: 379: 378: 375: 372:0.9144 m 369: 363: 359: 355: 348:Imperial/U.S. 340: 337: 335: 332: 331: 327: 325: 323: 319: 316: 315: 312: 308: 305: 302: 301: 298: 294: 291: 289: 286: 285: 282: 279: 276: 273: 268: 265: 262: 261: 258: 246: 242: 232: 226: 222: 204: 200: 196: 190: 184: 173: 172:Metric system 166:Metric system 163: 161: 157: 153: 149: 145: 136: 126: 123: 115: 104: 101: 97: 94: 90: 87: 83: 80: 76: 73: ā€“  72: 68: 67:Find sources: 61: 57: 51: 50: 45:This article 43: 39: 34: 33: 30: 19: 2666:Solar radius 2660:Light-second 2650: 2640:Earth radius 2611: 2508:Mesopotamian 2402:Puerto Rican 1799:Astronomical 1676: 1654:. 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Springer. 1243: 1235: 1178:horse length 1155:Horse racing 1153: 1124: 1098:Ancient Rome 1059: 1010: 1006: 980: 976: 947: 908: 878: 874: 851: 846: 845: 816: 811: 810: 781: 777: 748: 744: 715: 609: 595:Earth radius 588:Astronomical 586: 558: 530: 487: 468: 438: 402:25.4 mm 376: 365: 238: 192: 148:metric units 143: 141: 118: 112:October 2012 109: 99: 92: 85: 78: 66: 54:Please help 49:verification 46: 29: 2372:Costa Rican 2336:Seychellois 2245:Singaporean 2040:Traditional 1895:Metrication 1833:Geometrised 1789:Avoirdupois 971:Stoney unit 871:of length) 869:Atomic unit 865:Bohr radius 669:Julian year 545:Centimeters 541:millimeters 458:1852 m 394:of an inch) 229:1000 m 2721:gigaparsec 2715:megaparsec 2709:kiloparsec 2697:light-year 2458:Venezuelan 2443:Paraguayan 2397:Nicaraguan 2275:Vietnamese 2250:Sri Lankan 2235:Philippine 2195:Indonesian 2119:Portuguese 2013:Winchester 1916:Comparison 1866:Background 1804:Electrical 1656:15 October 1627:15 October 1569:2008-07-05 1328:2012-09-19 1307:16 October 1227:References 1115:See also: 1054:See also: 973:of length 736:Reference 692:.9 km 661:.8 km 644:light-year 518:yards, or 322:myriameter 311:micrometer 297:picometers 281:femtometer 245:centimeter 187:See also: 82:newspapers 2691:terametre 2679:gigametre 2616:Astronomy 2453:Uruguayan 2438:Colombian 2428:Brazilian 2418:Argentine 2356:Tanzanian 2326:Mauritian 2296:Ethiopian 2260:Taiwanese 2230:Pakistani 2210:Mongolian 2185:Cambodian 2104:Norwegian 2074:Icelandic 2069:Hungarian 2062:Byzantine 2018:Exchequer 1766:Hong Kong 1476:195290884 1367:8 January 694:or about 577:Astronomy 489:Surveyors 476:Surveying 269:SI value 225:kilometer 212:299792458 195:base unit 2763:Category 2734:See also 2673:☉ 2614:used in 2539:Obsolete 2534:Humorous 2488:Egyptian 2448:Peruvian 2423:Bolivian 2387:Honduran 2351:Tunisian 2331:Moroccan 2321:Malagasy 2306:Eritrean 2301:Egyptian 2291:Algerian 2220:Nepalese 2200:Japanese 2134:Scottish 2124:Romanian 2025:Estonian 1935:Historic 1911:Overview 1880:Overview 1777:Specific 1416:27702954 1185:See also 1111:Informal 1106:(Russia) 700: ly 618: km 539:(m) and 470:Aviators 465:Aviation 384:or mil ( 288:Ć„ngstrƶm 221:prefixes 2570:Modulor 2544:Unusual 2513:Persian 2471:Ancient 2433:Chilean 2392:Mexican 2382:Haitian 2311:Guinean 2215:Myanmar 2154:Swedish 2149:Spanish 2139:Serbian 2129:Russian 2109:Ottoman 2099:Maltese 2089:Latvian 2084:Italian 2030:Finnish 2008:English 1988:Cypriot 1983:Cornish 1890:History 1885:Outline 1820:Natural 1761:Chinese 1739:General 1732:Current 1503:Bibcode 1456:Bibcode 1169:⁄ 1162:furlong 1090:(China) 1061:Archaic 1050:Archaic 730:Symbol 712:Physics 667:in one 638: m 572:Science 513:⁄ 441:sailors 426:(land) 389:⁄ 303:micron 266:Symbol 252:⁄ 239:In the 210:⁄ 96:scholar 2703:parsec 2565:N-body 2503:Indian 2478:Arabic 2341:Somali 2316:Libyan 2284:Africa 2255:Syrian 2205:Korean 2190:Indian 2180:Afghan 2144:Slovak 2114:Polish 2052:German 2035:French 1998:Danish 1976:Europe 1942:Metric 1873:Metric 1853:Stoney 1843:Planck 1828:Atomic 1683:  1623:. NIST 1599:  1545:14 Sep 1523:  1474:  1414:  1404:  1358:  1354:ā€“131. 1280:  1252:  1083:league 675:parsec 665:vacuum 543:(mm). 537:meters 448:fathom 435:Marine 428:league 360:, and 334:x unit 274:fermi 235:Non-SI 98:  91:  84:  77:  69:  2723:(Gpc) 2717:(Mpc) 2711:(kpc) 2553:Other 2518:Roman 2498:Hindu 2493:Greek 2377:Cuban 2265:Tatar 2225:Omani 2164:Welsh 2159:Swiss 2079:Irish 2057:Greek 2003:Dutch 1993:Czech 1963:(CGS) 1957:(MTS) 1951:(MKS) 1923:(FPS) 1904:UK/US 1521:JSTOR 1472:S2CID 1433:(PDF) 1150:Other 1104:verst 1073:cubit 1032:1 eV 1017:2.103 987:1.381 954:1.616 917:9.112 885:5.291 823:3.861 788:2.426 755:2.817 696:3.261 549:plans 496:chain 263:Name 247:, or 203:light 199:meter 103:JSTOR 89:books 2705:(pc) 2699:(ly) 2693:(Tm) 2687:(au) 2681:(Gm) 2662:(ls) 2270:Thai 2240:Pegu 2173:Asia 1811:(US) 1794:Troy 1681:ISBN 1658:2012 1651:NIST 1629:2012 1597:ISBN 1547:2012 1412:OCLC 1402:ISBN 1369:2012 1356:ISBN 1309:2012 1278:ISBN 1250:ISBN 1143:hair 1119:and 1094:pace 1078:rope 1068:cana 1036:1.97 958:(97) 939:The 927:(83) 907:1 / 892:(19) 863:The 830:(18) 828:6764 795:(18) 762:(31) 421:mile 414:yard 408:foot 398:inch 391:1000 382:thou 368:yard 295:100 193:The 75:news 2649:or 1511:doi 1499:121 1464:doi 1352:130 1011:QCD 1001:QCD 956:199 925:509 922:505 919:670 890:083 887:772 825:592 793:215 790:310 760:285 757:940 690:671 687:814 684:775 681:856 659:580 656:472 653:730 650:460 636:700 633:870 630:597 628:149 616:402 614:384 506:rod 338:xu 320:or 306:Ī¼m 277:fm 254:100 227:is 58:by 2765:: 2647:šŸœØ 1649:. 1645:. 1619:. 1577:^ 1519:. 1509:. 1497:. 1493:. 1470:. 1462:. 1452:74 1450:. 1410:. 1264:^ 1088:li 1040:10 1021:10 991:10 962:10 945:š“ 931:10 896:10 834:10 799:10 766:10 698:56 679:30 610:LD 601:šŸœØ 443:: 356:, 309:1 292:ƅ 231:. 177:SI 160:SI 142:A 2675:) 2670:R 2668:( 2656:) 2653:E 2651:R 2644:R 2642:( 2604:e 2597:t 2590:v 1717:e 1710:t 1703:v 1689:. 1660:. 1631:. 1605:. 1549:. 1527:. 1513:: 1505:: 1478:. 1466:: 1458:: 1435:. 1418:. 1371:. 1331:. 1311:. 1286:. 1258:. 1171:8 1167:1 1100:) 1038:Ɨ 1019:Ɨ 1007:l 989:Ɨ 981:S 977:l 960:Ɨ 948:P 929:Ɨ 912:āˆž 909:R 894:Ɨ 879:0 875:a 852:x 847:Ī» 832:Ɨ 817:C 812:Ī» 797:Ɨ 782:C 778:Ī» 764:Ɨ 749:e 745:r 671:. 648:9 598:R 522:) 515:2 511:1 502:) 460:) 404:) 400:( 387:1 250:1 208:1 125:) 119:( 114:) 110:( 100:Ā· 93:Ā· 86:Ā· 79:Ā· 52:. 20:)

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