femtobarn | 1 fb | 2 fb | 3 fb | 4 fb | 5 fb | 6 fb | 7 fb | 8 fb | 9 fb | 10 fb | 11 fb | 12 fb | 13 fb | 14 fb | 15 fb | 16 fb | 17 fb | 18 fb | 19 fb | 20 fb | 21 fb | 22 fb | 23 fb | 24 fb | 25 fb | 26 fb | 27 fb | 28 fb | 29 fb | 30 fb | 31 fb | 32 fb | 33 fb | 34 fb | 35 fb | 36 fb | 37 fb | 38 fb | 39 fb | 40 fb | 41 fb | 42 fb | 43 fb | 44 fb | 45 fb | 46 fb | 47 fb | 48 fb | 49 fb | 50 fb | 51 fb | 52 fb | 53 fb | 54 fb | 55 fb | 56 fb | 57 fb | 58 fb | 59 fb | 60 fb | 61 fb | 62 fb | 63 fb | 64 fb | 65 fb | 66 fb | 67 fb | 68 fb | 69 fb | 70 fb | 71 fb | 72 fb | 73 fb | 74 fb | 75 fb | 76 fb | 77 fb | 78 fb | 79 fb | 80 fb | 81 fb | 82 fb | 83 fb | 84 fb | 85 fb | 86 fb | 87 fb | 88 fb | 89 fb | 90 fb | 91 fb | 92 fb | 93 fb | 94 fb | 95 fb | 96 fb | 97 fb | 98 fb | 99 fb | 100 fb |
hide | 2.0 × 10-49 hide | 4.0 × 10-49 hide | 6.0 × 10-49 hide | 8.0 × 10-49 hide | 1.0 × 10-48 hide | 1.2 × 10-48 hide | 1.4 × 10-48 hide | 1.6 × 10-48 hide | 1.8 × 10-48 hide | 2.0 × 10-48 hide | 2.2 × 10-48 hide | 2.4 × 10-48 hide | 2.6 × 10-48 hide | 2.8 × 10-48 hide | 3.0 × 10-48 hide | 3.2 × 10-48 hide | 3.4 × 10-48 hide | 3.6 × 10-48 hide | 3.8 × 10-48 hide | 4.0 × 10-48 hide | 4.2 × 10-48 hide | 4.4 × 10-48 hide | 4.6 × 10-48 hide | 4.8 × 10-48 hide | 5.0 × 10-48 hide | 5.2 × 10-48 hide | 5.4 × 10-48 hide | 5.6 × 10-48 hide | 5.8 × 10-48 hide | 6.0 × 10-48 hide | 6.2 × 10-48 hide | 6.4 × 10-48 hide | 6.6 × 10-48 hide | 6.8 × 10-48 hide | 7.0 × 10-48 hide | 7.2 × 10-48 hide | 7.4 × 10-48 hide | 7.6 × 10-48 hide | 7.8 × 10-48 hide | 8.0 × 10-48 hide | 8.2 × 10-48 hide | 8.4 × 10-48 hide | 8.6 × 10-48 hide | 8.8 × 10-48 hide | 9.0 × 10-48 hide | 9.2 × 10-48 hide | 9.4 × 10-48 hide | 9.6 × 10-48 hide | 9.8 × 10-48 hide | 1.0 × 10-47 hide | 1.02 × 10-47 hide | 1.04 × 10-47 hide | 1.06 × 10-47 hide | 1.08 × 10-47 hide | 1.1 × 10-47 hide | 1.12 × 10-47 hide | 1.14 × 10-47 hide | 1.16 × 10-47 hide | 1.18 × 10-47 hide | 1.2 × 10-47 hide | 1.22 × 10-47 hide | 1.24 × 10-47 hide | 1.26 × 10-47 hide | 1.28 × 10-47 hide | 1.3 × 10-47 hide | 1.32 × 10-47 hide | 1.34 × 10-47 hide | 1.36 × 10-47 hide | 1.38 × 10-47 hide | 1.4 × 10-47 hide | 1.42 × 10-47 hide | 1.44 × 10-47 hide | 1.46 × 10-47 hide | 1.48 × 10-47 hide | 1.5 × 10-47 hide | 1.52 × 10-47 hide | 1.54 × 10-47 hide | 1.56 × 10-47 hide | 1.58 × 10-47 hide | 1.6 × 10-47 hide | 1.62 × 10-47 hide | 1.64 × 10-47 hide | 1.66 × 10-47 hide | 1.68 × 10-47 hide | 1.7 × 10-47 hide | 1.72 × 10-47 hide | 1.74 × 10-47 hide | 1.76 × 10-47 hide | 1.78 × 10-47 hide | 1.8 × 10-47 hide | 1.82 × 10-47 hide | 1.84 × 10-47 hide | 1.86 × 10-47 hide | 1.88 × 10-47 hide | 1.9 × 10-47 hide | 1.92 × 10-47 hide | 1.94 × 10-47 hide | 1.96 × 10-47 hide | 1.98 × 10-47 hide | 2.0 × 10-47 hide |
A femtobarn (symbol: fb) is a unit of area equal to 10−43 m2.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
femtobarn | fb | ≡ 10−43 m2 | ≡ 10−43 m2 | Nuclear Physics |
femtobarns | hides | femtobarns | hides |
---|---|---|---|
1 | = 2.0E-49 | 6 | = 1.2E-48 |
2 | = 4.0E-49 | 7 | = 1.4E-48 |
3 | = 6.0E-49 | 8 | = 1.6E-48 |
4 | = 8.0E-49 | 9 | = 1.8E-48 |
5 | = 1.0E-48 | 10 | = 2.0E-48 |
The hide was an English unit of land measurement originally intended to represent the amount of land sufficient to support a household.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
hide | ≈ 120 ac (variable) | ≈ 5×105 m2 | Other |
hides | femtobarns | hides | femtobarns |
---|---|---|---|
1 | = 5.0E+48 | 6 | = 3.0E+49 |
2 | = 1.0E+49 | 7 | = 3.5E+49 |
3 | = 1.5E+49 | 8 | = 4.0E+49 |
4 | = 2.0E+49 | 9 | = 4.5E+49 |
5 | = 2.5E+49 | 10 | = 5.0E+49 |
femtobarns | hides |
---|---|
1 | = 2.0 × 10-49 |
5.0 × 1048 | = 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 …) |