palm | 1 palm | 2 palm | 3 palm | 4 palm | 5 palm | 6 palm | 7 palm | 8 palm | 9 palm | 10 palm | 11 palm | 12 palm | 13 palm | 14 palm | 15 palm | 16 palm | 17 palm | 18 palm | 19 palm | 20 palm | 21 palm | 22 palm | 23 palm | 24 palm | 25 palm | 26 palm | 27 palm | 28 palm | 29 palm | 30 palm | 31 palm | 32 palm | 33 palm | 34 palm | 35 palm | 36 palm | 37 palm | 38 palm | 39 palm | 40 palm | 41 palm | 42 palm | 43 palm | 44 palm | 45 palm | 46 palm | 47 palm | 48 palm | 49 palm | 50 palm | 51 palm | 52 palm | 53 palm | 54 palm | 55 palm | 56 palm | 57 palm | 58 palm | 59 palm | 60 palm | 61 palm | 62 palm | 63 palm | 64 palm | 65 palm | 66 palm | 67 palm | 68 palm | 69 palm | 70 palm | 71 palm | 72 palm | 73 palm | 74 palm | 75 palm | 76 palm | 77 palm | 78 palm | 79 palm | 80 palm | 81 palm | 82 palm | 83 palm | 84 palm | 85 palm | 86 palm | 87 palm | 88 palm | 89 palm | 90 palm | 91 palm | 92 palm | 93 palm | 94 palm | 95 palm | 96 palm | 97 palm | 98 palm | 99 palm | 100 palm |
fermi | 76 200 000 000 000 fm | 1.524 × 1014 fm | 2.286 × 1014 fm | 3.048 × 1014 fm | 3.81 × 1014 fm | 4.572 × 1014 fm | 5.334 × 1014 fm | 6.096 × 1014 fm | 6.858 × 1014 fm | 7.62 × 1014 fm | 8.382 × 1014 fm | 9.144 × 1014 fm | 9.906 × 1014 fm | 1.0668 × 1015 fm | 1.143 × 1015 fm | 1.2192 × 1015 fm | 1.2954 × 1015 fm | 1.3716 × 1015 fm | 1.4478 × 1015 fm | 1.524 × 1015 fm | 1.6002 × 1015 fm | 1.6764 × 1015 fm | 1.7526 × 1015 fm | 1.8288 × 1015 fm | 1.905 × 1015 fm | 1.9812 × 1015 fm | 2.0574 × 1015 fm | 2.1336 × 1015 fm | 2.2098 × 1015 fm | 2.286 × 1015 fm | 2.3622 × 1015 fm | 2.4384 × 1015 fm | 2.5146 × 1015 fm | 2.5908 × 1015 fm | 2.667 × 1015 fm | 2.7432 × 1015 fm | 2.8194 × 1015 fm | 2.8956 × 1015 fm | 2.9718 × 1015 fm | 3.048 × 1015 fm | 3.1242 × 1015 fm | 3.2004 × 1015 fm | 3.2766 × 1015 fm | 3.3528 × 1015 fm | 3.429 × 1015 fm | 3.5052 × 1015 fm | 3.5814 × 1015 fm | 3.6576 × 1015 fm | 3.7338 × 1015 fm | 3.81 × 1015 fm | 3.8862 × 1015 fm | 3.9624 × 1015 fm | 4.0386 × 1015 fm | 4.1148 × 1015 fm | 4.191 × 1015 fm | 4.2672 × 1015 fm | 4.3434 × 1015 fm | 4.4196 × 1015 fm | 4.4958 × 1015 fm | 4.572 × 1015 fm | 4.6482 × 1015 fm | 4.7244 × 1015 fm | 4.8006 × 1015 fm | 4.8768 × 1015 fm | 4.953 × 1015 fm | 5.0292 × 1015 fm | 5.1054 × 1015 fm | 5.1816 × 1015 fm | 5.2578 × 1015 fm | 5.334 × 1015 fm | 5.4102 × 1015 fm | 5.4864 × 1015 fm | 5.5626 × 1015 fm | 5.6388 × 1015 fm | 5.715 × 1015 fm | 5.7912 × 1015 fm | 5.8674 × 1015 fm | 5.9436 × 1015 fm | 6.0198 × 1015 fm | 6.096 × 1015 fm | 6.1722 × 1015 fm | 6.2484 × 1015 fm | 6.3246 × 1015 fm | 6.4008 × 1015 fm | 6.477 × 1015 fm | 6.5532 × 1015 fm | 6.6294 × 1015 fm | 6.7056 × 1015 fm | 6.7818 × 1015 fm | 6.858 × 1015 fm | 6.9342 × 1015 fm | 7.0104 × 1015 fm | 7.0866 × 1015 fm | 7.1628 × 1015 fm | 7.239 × 1015 fm | 7.3152 × 1015 fm | 7.3914 × 1015 fm | 7.4676 × 1015 fm | 7.5438 × 1015 fm | 7.62 × 1015 fm |
The palm is an obsolete anthropic unit of length, originally based on the width of the human palm and then variously standardized. The same name is also used for a second, rather larger unit based on the length of the human hand.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
palm | ≡ 3 in | = 0.0762 m | Other (Length) |
palms | fermi | palms | fermi |
---|---|---|---|
1 | = 76200000000000 | 4 | = 3.048E+14 |
1.5 | = 1.143E+14 | 4.5 | = 3.429E+14 |
2 | = 1.524E+14 | 5 | = 3.81E+14 |
2.5 | = 1.905E+14 | 5.5 | = 4.191E+14 |
3 | = 2.286E+14 | 6 | = 4.572E+14 |
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 |
---|---|---|---|---|
fermi | fm | ≡ 1×10−15 m | ≡ 1×10−15 m | Metric system Non-SI |
fermi | palms | fermi | palms |
---|---|---|---|
1 | = 1.3123359580052E-14 | 4 | = 5.249343832021E-14 |
1.5 | = 1.9685039370079E-14 | 4.5 | = 5.9055118110236E-14 |
2 | = 2.6246719160105E-14 | 5 | = 6.5616797900262E-14 |
2.5 | = 3.2808398950131E-14 | 5.5 | = 7.2178477690289E-14 |
3 | = 3.9370078740157E-14 | 6 | = 7.8740157480315E-14 |
palms | fermi |
---|---|
1 | = 76 200 000 000 000 |
1.3123359580052 × 10-14 | = 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 …) |