fermtometer | 1 fm | 2 fm | 3 fm | 4 fm | 5 fm | 6 fm | 7 fm | 8 fm | 9 fm | 10 fm | 11 fm | 12 fm | 13 fm | 14 fm | 15 fm | 16 fm | 17 fm | 18 fm | 19 fm | 20 fm | 21 fm | 22 fm | 23 fm | 24 fm | 25 fm | 26 fm | 27 fm | 28 fm | 29 fm | 30 fm | 31 fm | 32 fm | 33 fm | 34 fm | 35 fm | 36 fm | 37 fm | 38 fm | 39 fm | 40 fm | 41 fm | 42 fm | 43 fm | 44 fm | 45 fm | 46 fm | 47 fm | 48 fm | 49 fm | 50 fm | 51 fm | 52 fm | 53 fm | 54 fm | 55 fm | 56 fm | 57 fm | 58 fm | 59 fm | 60 fm | 61 fm | 62 fm | 63 fm | 64 fm | 65 fm | 66 fm | 67 fm | 68 fm | 69 fm | 70 fm | 71 fm | 72 fm | 73 fm | 74 fm | 75 fm | 76 fm | 77 fm | 78 fm | 79 fm | 80 fm | 81 fm | 82 fm | 83 fm | 84 fm | 85 fm | 86 fm | 87 fm | 88 fm | 89 fm | 90 fm | 91 fm | 92 fm | 93 fm | 94 fm | 95 fm | 96 fm | 97 fm | 98 fm | 99 fm | 100 fm |
smoot | 5.8761311552474 × 10-16 smoot | 1.1752262310495 × 10-15 smoot | 1.7628393465742 × 10-15 smoot | 2.350452462099 × 10-15 smoot | 2.9380655776237 × 10-15 smoot | 3.5256786931484 × 10-15 smoot | 4.1132918086732 × 10-15 smoot | 4.7009049241979 × 10-15 smoot | 5.2885180397226 × 10-15 smoot | 5.8761311552474 × 10-15 smoot | 6.4637442707721 × 10-15 smoot | 7.0513573862969 × 10-15 smoot | 7.6389705018216 × 10-15 smoot | 8.2265836173463 × 10-15 smoot | 8.8141967328711 × 10-15 smoot | 9.4018098483958 × 10-15 smoot | 9.9894229639206 × 10-15 smoot | 1.0577036079445 × 10-14 smoot | 1.116464919497 × 10-14 smoot | 1.1752262310495 × 10-14 smoot | 1.233987542602 × 10-14 smoot | 1.2927488541544 × 10-14 smoot | 1.3515101657069 × 10-14 smoot | 1.4102714772594 × 10-14 smoot | 1.4690327888118 × 10-14 smoot | 1.5277941003643 × 10-14 smoot | 1.5865554119168 × 10-14 smoot | 1.6453167234693 × 10-14 smoot | 1.7040780350217 × 10-14 smoot | 1.7628393465742 × 10-14 smoot | 1.8216006581267 × 10-14 smoot | 1.8803619696792 × 10-14 smoot | 1.9391232812316 × 10-14 smoot | 1.9978845927841 × 10-14 smoot | 2.0566459043366 × 10-14 smoot | 2.1154072158891 × 10-14 smoot | 2.1741685274415 × 10-14 smoot | 2.232929838994 × 10-14 smoot | 2.2916911505465 × 10-14 smoot | 2.350452462099 × 10-14 smoot | 2.4092137736514 × 10-14 smoot | 2.4679750852039 × 10-14 smoot | 2.5267363967564 × 10-14 smoot | 2.5854977083088 × 10-14 smoot | 2.6442590198613 × 10-14 smoot | 2.7030203314138 × 10-14 smoot | 2.7617816429663 × 10-14 smoot | 2.8205429545187 × 10-14 smoot | 2.8793042660712 × 10-14 smoot | 2.9380655776237 × 10-14 smoot | 2.9968268891762 × 10-14 smoot | 3.0555882007286 × 10-14 smoot | 3.1143495122811 × 10-14 smoot | 3.1731108238336 × 10-14 smoot | 3.2318721353861 × 10-14 smoot | 3.2906334469385 × 10-14 smoot | 3.349394758491 × 10-14 smoot | 3.4081560700435 × 10-14 smoot | 3.466917381596 × 10-14 smoot | 3.5256786931484 × 10-14 smoot | 3.5844400047009 × 10-14 smoot | 3.6432013162534 × 10-14 smoot | 3.7019626278059 × 10-14 smoot | 3.7607239393583 × 10-14 smoot | 3.8194852509108 × 10-14 smoot | 3.8782465624633 × 10-14 smoot | 3.9370078740157 × 10-14 smoot | 3.9957691855682 × 10-14 smoot | 4.0545304971207 × 10-14 smoot | 4.1132918086732 × 10-14 smoot | 4.1720531202256 × 10-14 smoot | 4.2308144317781 × 10-14 smoot | 4.2895757433306 × 10-14 smoot | 4.3483370548831 × 10-14 smoot | 4.4070983664355 × 10-14 smoot | 4.465859677988 × 10-14 smoot | 4.5246209895405 × 10-14 smoot | 4.583382301093 × 10-14 smoot | 4.6421436126454 × 10-14 smoot | 4.7009049241979 × 10-14 smoot | 4.7596662357504 × 10-14 smoot | 4.8184275473029 × 10-14 smoot | 4.8771888588553 × 10-14 smoot | 4.9359501704078 × 10-14 smoot | 4.9947114819603 × 10-14 smoot | 5.0534727935128 × 10-14 smoot | 5.1122341050652 × 10-14 smoot | 5.1709954166177 × 10-14 smoot | 5.2297567281702 × 10-14 smoot | 5.2885180397226 × 10-14 smoot | 5.3472793512751 × 10-14 smoot | 5.4060406628276 × 10-14 smoot | 5.4648019743801 × 10-14 smoot | 5.5235632859325 × 10-14 smoot | 5.582324597485 × 10-14 smoot | 5.6410859090375 × 10-14 smoot | 5.69984722059 × 10-14 smoot | 5.7586085321424 × 10-14 smoot | 5.8173698436949 × 10-14 smoot | 5.8761311552474 × 10-14 smoot |
The femtometre (American spelling femtometer, symbol fm derived from the Danish and Norwegian word femten, "fifteen"+Ancient Greek: μέτρον, metrοn, "unit of measurement") is an SI unit of length equal to 10−15 metres, which means a quadrillionth of one. This distance can also be called a fermi and was so named in honour of physicist Enrico Fermi, as it is a typical length-scale of nuclear physics.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
fermtometer | fm | 1000 attometres = 1 femtometre = 1 fermi = 0.001 picometre = 1×10−15 metres 1000000 femtometres = 10 ångström = 1 nanometre. | ≡ 1×10-15 m | Metric system SI |
fermtometers | smoots | fermtometers | smoots |
---|---|---|---|
1 | ≡ 5.8761311552474E-16 | 4 | ≡ 2.350452462099E-15 |
1.5 | ≡ 8.8141967328711E-16 | 4.5 | ≡ 2.6442590198613E-15 |
2 | ≡ 1.1752262310495E-15 | 5 | ≡ 2.9380655776237E-15 |
2.5 | ≡ 1.4690327888118E-15 | 5.5 | ≡ 3.2318721353861E-15 |
3 | ≡ 1.7628393465742E-15 | 6 | ≡ 3.5256786931484E-15 |
The smoot /ˈsmuːt/ is a nonstandard, humorous unit of length created as part of an MIT fraternity prank.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
smoot | ≡ Height of Oliver R. Smoot. | ≡ 1.7018 m | Other (Length) |
smoots | fermtometers | smoots | fermtometers |
---|---|---|---|
1 | ≡ 1.7018E+15 | 4 | ≡ 6.8072E+15 |
1.5 | ≡ 2.5527E+15 | 4.5 | ≡ 7.6581E+15 |
2 | ≡ 3.4036E+15 | 5 | ≡ 8.509E+15 |
2.5 | ≡ 4.2545E+15 | 5.5 | ≡ 9.3599E+15 |
3 | ≡ 5.1054E+15 | 6 | ≡ 1.02108E+16 |
fermtometers | smoots |
---|---|
1 | ≡ 5.8761311552474 × 10-16 |
1.7018 × 1015 | ≡ 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 …) |