ell | 1 ell | 2 ell | 3 ell | 4 ell | 5 ell | 6 ell | 7 ell | 8 ell | 9 ell | 10 ell | 11 ell | 12 ell | 13 ell | 14 ell | 15 ell | 16 ell | 17 ell | 18 ell | 19 ell | 20 ell | 21 ell | 22 ell | 23 ell | 24 ell | 25 ell | 26 ell | 27 ell | 28 ell | 29 ell | 30 ell | 31 ell | 32 ell | 33 ell | 34 ell | 35 ell | 36 ell | 37 ell | 38 ell | 39 ell | 40 ell | 41 ell | 42 ell | 43 ell | 44 ell | 45 ell | 46 ell | 47 ell | 48 ell | 49 ell | 50 ell | 51 ell | 52 ell | 53 ell | 54 ell | 55 ell | 56 ell | 57 ell | 58 ell | 59 ell | 60 ell | 61 ell | 62 ell | 63 ell | 64 ell | 65 ell | 66 ell | 67 ell | 68 ell | 69 ell | 70 ell | 71 ell | 72 ell | 73 ell | 74 ell | 75 ell | 76 ell | 77 ell | 78 ell | 79 ell | 80 ell | 81 ell | 82 ell | 83 ell | 84 ell | 85 ell | 86 ell | 87 ell | 88 ell | 89 ell | 90 ell | 91 ell | 92 ell | 93 ell | 94 ell | 95 ell | 96 ell | 97 ell | 98 ell | 99 ell | 100 ell |
earth radius | 1.7940668654842 × 10-7R⊕ | 3.5881337309685 × 10-7R⊕ | 5.3822005964527 × 10-7R⊕ | 7.1762674619369 × 10-7R⊕ | 8.9703343274211 × 10-7R⊕ | 1.0764401192905 × 10-6R⊕ | 1.255846805839 × 10-6R⊕ | 1.4352534923874 × 10-6R⊕ | 1.6146601789358 × 10-6R⊕ | 1.7940668654842 × 10-6R⊕ | 1.9734735520326 × 10-6R⊕ | 2.1528802385811 × 10-6R⊕ | 2.3322869251295 × 10-6R⊕ | 2.5116936116779 × 10-6R⊕ | 2.6911002982263 × 10-6R⊕ | 2.8705069847748 × 10-6R⊕ | 3.0499136713232 × 10-6R⊕ | 3.2293203578716 × 10-6R⊕ | 3.40872704442 × 10-6R⊕ | 3.5881337309685 × 10-6R⊕ | 3.7675404175169 × 10-6R⊕ | 3.9469471040653 × 10-6R⊕ | 4.1263537906137 × 10-6R⊕ | 4.3057604771621 × 10-6R⊕ | 4.4851671637106 × 10-6R⊕ | 4.664573850259 × 10-6R⊕ | 4.8439805368074 × 10-6R⊕ | 5.0233872233558 × 10-6R⊕ | 5.2027939099043 × 10-6R⊕ | 5.3822005964527 × 10-6R⊕ | 5.5616072830011 × 10-6R⊕ | 5.7410139695495 × 10-6R⊕ | 5.9204206560979 × 10-6R⊕ | 6.0998273426464 × 10-6R⊕ | 6.2792340291948 × 10-6R⊕ | 6.4586407157432 × 10-6R⊕ | 6.6380474022916 × 10-6R⊕ | 6.8174540888401 × 10-6R⊕ | 6.9968607753885 × 10-6R⊕ | 7.1762674619369 × 10-6R⊕ | 7.3556741484853 × 10-6R⊕ | 7.5350808350337 × 10-6R⊕ | 7.7144875215822 × 10-6R⊕ | 7.8938942081306 × 10-6R⊕ | 8.073300894679 × 10-6R⊕ | 8.2527075812274 × 10-6R⊕ | 8.4321142677759 × 10-6R⊕ | 8.6115209543243 × 10-6R⊕ | 8.7909276408727 × 10-6R⊕ | 8.9703343274211 × 10-6R⊕ | 9.1497410139695 × 10-6R⊕ | 9.329147700518 × 10-6R⊕ | 9.5085543870664 × 10-6R⊕ | 9.6879610736148 × 10-6R⊕ | 9.8673677601632 × 10-6R⊕ | 1.0046774446712 × 10-5R⊕ | 1.022618113326 × 10-5R⊕ | 1.0405587819809 × 10-5R⊕ | 1.0584994506357 × 10-5R⊕ | 1.0764401192905 × 10-5R⊕ | 1.0943807879454 × 10-5R⊕ | 1.1123214566002 × 10-5R⊕ | 1.1302621252551 × 10-5R⊕ | 1.1482027939099 × 10-5R⊕ | 1.1661434625647 × 10-5R⊕ | 1.1840841312196 × 10-5R⊕ | 1.2020247998744 × 10-5R⊕ | 1.2199654685293 × 10-5R⊕ | 1.2379061371841 × 10-5R⊕ | 1.255846805839 × 10-5R⊕ | 1.2737874744938 × 10-5R⊕ | 1.2917281431486 × 10-5R⊕ | 1.3096688118035 × 10-5R⊕ | 1.3276094804583 × 10-5R⊕ | 1.3455501491132 × 10-5R⊕ | 1.363490817768 × 10-5R⊕ | 1.3814314864229 × 10-5R⊕ | 1.3993721550777 × 10-5R⊕ | 1.4173128237325 × 10-5R⊕ | 1.4352534923874 × 10-5R⊕ | 1.4531941610422 × 10-5R⊕ | 1.4711348296971 × 10-5R⊕ | 1.4890754983519 × 10-5R⊕ | 1.5070161670067 × 10-5R⊕ | 1.5249568356616 × 10-5R⊕ | 1.5428975043164 × 10-5R⊕ | 1.5608381729713 × 10-5R⊕ | 1.5787788416261 × 10-5R⊕ | 1.596719510281 × 10-5R⊕ | 1.6146601789358 × 10-5R⊕ | 1.6326008475906 × 10-5R⊕ | 1.6505415162455 × 10-5R⊕ | 1.6684821849003 × 10-5R⊕ | 1.6864228535552 × 10-5R⊕ | 1.70436352221 × 10-5R⊕ | 1.7223041908649 × 10-5R⊕ | 1.7402448595197 × 10-5R⊕ | 1.7581855281745 × 10-5R⊕ | 1.7761261968294 × 10-5R⊕ | 1.7940668654842 × 10-5R⊕ |
An ell (from Proto-Germanic *alinō, cognate with Latin ulna) is a unit of measurement, originally a cubit, i.e., approximating the length of a man's arm from the elbow ("elbow" means the bend or bow of the ell or arm) to the tip of the middle finger, or about 18 inches (457 mm); in later usage, any of several longer units.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
ell | ell | ≡ 45 in (In England usually) | = 1.143 m | Other (Length) |
ell | earth radius | ell | earth radius |
---|---|---|---|
1 | ≈ 1.7940668654842E-7 | 4 | ≈ 7.1762674619369E-7 |
1.5 | ≈ 2.6911002982263E-7 | 4.5 | ≈ 8.073300894679E-7 |
2 | ≈ 3.5881337309685E-7 | 5 | ≈ 8.9703343274211E-7 |
2.5 | ≈ 4.4851671637106E-7 | 5.5 | ≈ 9.8673677601632E-7 |
3 | ≈ 5.3822005964527E-7 | 6 | ≈ 1.0764401192905E-6 |
Earth radius is the distance from Earth's center to its surface, about 6,371 km (3,959 mi). This length is also used as a unit of distance, especially in astronomy and geology, where it is usually denoted by R⊕.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
earth radius | R⊕ | ≈ 6,371 km | ≈ 6,371 km | Science - Astronomy (Length) |
earth radius | ell | earth radius | ell |
---|---|---|---|
1 | ≈ 5573928.2589676 | 4 | ≈ 22295713.035871 |
1.5 | ≈ 8360892.3884514 | 4.5 | ≈ 25082677.165354 |
2 | ≈ 11147856.517935 | 5 | ≈ 27869641.294838 |
2.5 | ≈ 13934820.647419 | 5.5 | ≈ 30656605.424322 |
3 | ≈ 16721784.776903 | 6 | ≈ 33443569.553806 |
ell | earth radius |
---|---|
1 | ≈ 1.7940668654842 × 10-7 |
5,573,928.2589676 | ≈ 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |