fermi | 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 |
ångström | 1.0 × 10-5 Å | 2.0 × 10-5 Å | 3.0 × 10-5 Å | 4.0 × 10-5 Å | 5.0 × 10-5 Å | 6.0 × 10-5 Å | 7.0 × 10-5 Å | 8.0 × 10-5 Å | 9.0 × 10-5 Å | 0.0001 Å | 0.00011 Å | 0.00012 Å | 0.00013 Å | 0.00014 Å | 0.00015 Å | 0.00016 Å | 0.00017 Å | 0.00018 Å | 0.00019 Å | 0.0002 Å | 0.00021 Å | 0.00022 Å | 0.00023 Å | 0.00024 Å | 0.00025 Å | 0.00026 Å | 0.00027 Å | 0.00028 Å | 0.00029 Å | 0.0003 Å | 0.00031 Å | 0.00032 Å | 0.00033 Å | 0.00034 Å | 0.00035 Å | 0.00036 Å | 0.00037 Å | 0.00038 Å | 0.00039 Å | 0.0004 Å | 0.00041 Å | 0.00042 Å | 0.00043 Å | 0.00044 Å | 0.00045 Å | 0.00046 Å | 0.00047 Å | 0.00048 Å | 0.00049 Å | 0.0005 Å | 0.00051 Å | 0.00052 Å | 0.00053 Å | 0.00054 Å | 0.00055 Å | 0.00056 Å | 0.00057 Å | 0.00058 Å | 0.00059 Å | 0.0006 Å | 0.00061 Å | 0.00062 Å | 0.00063 Å | 0.00064 Å | 0.00065 Å | 0.00066 Å | 0.00067 Å | 0.00068 Å | 0.00069 Å | 0.0007 Å | 0.00071 Å | 0.00072 Å | 0.00073 Å | 0.00074 Å | 0.00075 Å | 0.00076 Å | 0.00077 Å | 0.00078 Å | 0.00079 Å | 0.0008 Å | 0.00081 Å | 0.00082 Å | 0.00083 Å | 0.00084 Å | 0.00085 Å | 0.00086 Å | 0.00087 Å | 0.00088 Å | 0.00089 Å | 0.0009 Å | 0.00091 Å | 0.00092 Å | 0.00093 Å | 0.00094 Å | 0.00095 Å | 0.00096 Å | 0.00097 Å | 0.00098 Å | 0.00099 Å | 0.001 Å |
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 | ångströms | fermi | ångströms |
---|---|---|---|
1 | ≡ 1.0E-5 | 4 | ≡ 4.0E-5 |
1.5 | ≡ 1.5E-5 | 4.5 | ≡ 4.5E-5 |
2 | ≡ 2.0E-5 | 5 | ≡ 5.0E-5 |
2.5 | ≡ 2.5E-5 | 5.5 | ≡ 5.5E-5 |
3 | ≡ 3.0E-5 | 6 | ≡ 6.0E-5 |
The ångström or angstrom (IPA: /ˈɔːŋstrəm/); Swedish: [ˈɔŋstrøm]) is a unit of length equal to 10−10 m (one ten-billionth of a metre) or 0.1 nanometre. Its symbol is Å, a letter in theSwedish alphabet.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
ångström | Å | ≡ 1×10−10 m | ≡ 0.1 nm | Metric system Non-SI |
ångströms | fermi | ångströms | fermi |
---|---|---|---|
1 | ≡ 100000 | 4 | ≡ 400000 |
1.5 | ≡ 150000 | 4.5 | ≡ 450000 |
2 | ≡ 200000 | 5 | ≡ 500000 |
2.5 | ≡ 250000 | 5.5 | ≡ 550000 |
3 | ≡ 300000 | 6 | ≡ 600000 |
fermi | ångströms |
---|---|
1 | ≡ 1.0 × 10-5 |
100 000 | ≡ 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 …) |