nanometer | 1 nm | 2 nm | 3 nm | 4 nm | 5 nm | 6 nm | 7 nm | 8 nm | 9 nm | 10 nm | 11 nm | 12 nm | 13 nm | 14 nm | 15 nm | 16 nm | 17 nm | 18 nm | 19 nm | 20 nm | 21 nm | 22 nm | 23 nm | 24 nm | 25 nm | 26 nm | 27 nm | 28 nm | 29 nm | 30 nm | 31 nm | 32 nm | 33 nm | 34 nm | 35 nm | 36 nm | 37 nm | 38 nm | 39 nm | 40 nm | 41 nm | 42 nm | 43 nm | 44 nm | 45 nm | 46 nm | 47 nm | 48 nm | 49 nm | 50 nm | 51 nm | 52 nm | 53 nm | 54 nm | 55 nm | 56 nm | 57 nm | 58 nm | 59 nm | 60 nm | 61 nm | 62 nm | 63 nm | 64 nm | 65 nm | 66 nm | 67 nm | 68 nm | 69 nm | 70 nm | 71 nm | 72 nm | 73 nm | 74 nm | 75 nm | 76 nm | 77 nm | 78 nm | 79 nm | 80 nm | 81 nm | 82 nm | 83 nm | 84 nm | 85 nm | 86 nm | 87 nm | 88 nm | 89 nm | 90 nm | 91 nm | 92 nm | 93 nm | 94 nm | 95 nm | 96 nm | 97 nm | 98 nm | 99 nm | 100 nm |
fermi | 1 000 000 fm | 2 000 000 fm | 3 000 000 fm | 4 000 000 fm | 5 000 000 fm | 6 000 000 fm | 7 000 000 fm | 8 000 000 fm | 9 000 000 fm | 10 000 000 fm | 11 000 000 fm | 12 000 000 fm | 13 000 000 fm | 14 000 000 fm | 15 000 000 fm | 16 000 000 fm | 17 000 000 fm | 18 000 000 fm | 19 000 000 fm | 20 000 000 fm | 21 000 000 fm | 22 000 000 fm | 23 000 000 fm | 24 000 000 fm | 25 000 000 fm | 26 000 000 fm | 27 000 000 fm | 28 000 000 fm | 29 000 000 fm | 30 000 000 fm | 31 000 000 fm | 32 000 000 fm | 33 000 000 fm | 34 000 000 fm | 35 000 000 fm | 36 000 000 fm | 37 000 000 fm | 38 000 000 fm | 39 000 000 fm | 40 000 000 fm | 41 000 000 fm | 42 000 000 fm | 43 000 000 fm | 44 000 000 fm | 45 000 000 fm | 46 000 000 fm | 47 000 000 fm | 48 000 000 fm | 49 000 000 fm | 50 000 000 fm | 51 000 000 fm | 52 000 000 fm | 53 000 000 fm | 54 000 000 fm | 55 000 000 fm | 56 000 000 fm | 57 000 000 fm | 58 000 000 fm | 59 000 000 fm | 60 000 000 fm | 61 000 000 fm | 62 000 000 fm | 63 000 000 fm | 64 000 000 fm | 65 000 000 fm | 66 000 000 fm | 67 000 000 fm | 68 000 000 fm | 69 000 000 fm | 70 000 000 fm | 71 000 000 fm | 72 000 000 fm | 73 000 000 fm | 74 000 000 fm | 75 000 000 fm | 76 000 000 fm | 77 000 000 fm | 78 000 000 fm | 79 000 000 fm | 80 000 000 fm | 81 000 000 fm | 82 000 000 fm | 83 000 000 fm | 84 000 000 fm | 85 000 000 fm | 86 000 000 fm | 87 000 000 fm | 88 000 000 fm | 89 000 000 fm | 90 000 000 fm | 91 000 000 fm | 92 000 000 fm | 93 000 000 fm | 94 000 000 fm | 95 000 000 fm | 96 000 000 fm | 97 000 000 fm | 98 000 000 fm | 99 000 000 fm | 100 000 000 fm |
The nanometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: nm) or nanometer (American spelling) is a unit of length in the metric system, equal to one billionth of a metre (0.000000001 m). The name combines the SI prefix nano- (from the Ancient Greek νάνος, nanos, "dwarf") with the parent unit name metre (from Greek μέτρον, metrοn, "unit of measurement"). It can be written in scientific notation as 1×10−9 m, in engineering notation as 1 E−9 m, and is simply 1/1000000000 metres.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
nanometer | nm | = 3.2808×10−9 ft | ≡ 1×10-9 m ≡ 0.000000001 m | Metric system SI |
nanometers | fermi | nanometers | fermi |
---|---|---|---|
1 | ≡ 1000000 | 4 | ≡ 4000000 |
1.5 | ≡ 1500000 | 4.5 | ≡ 4500000 |
2 | ≡ 2000000 | 5 | ≡ 5000000 |
2.5 | ≡ 2500000 | 5.5 | ≡ 5500000 |
3 | ≡ 3000000 | 6 | ≡ 6000000 |
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 | nanometers | fermi | nanometers |
---|---|---|---|
1 | ≡ 1.0E-6 | 4 | ≡ 4.0E-6 |
1.5 | ≡ 1.5E-6 | 4.5 | ≡ 4.5E-6 |
2 | ≡ 2.0E-6 | 5 | ≡ 5.0E-6 |
2.5 | ≡ 2.5E-6 | 5.5 | ≡ 5.5E-6 |
3 | ≡ 3.0E-6 | 6 | ≡ 6.0E-6 |
nanometers | fermi |
---|---|
1 | ≡ 1 000 000 |
1.0 × 10-6 | ≡ 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 …) |