Convert a.u. of length to kilometer
Please provide values below to convert a.u. of length [a.u., b] to kilometer [km], or Convert kilometer to a.u. of length.
How to Convert A.u. Of Length to Kilometer
1 a.u., b = 5.29177249e-14 km
Example: convert 15 a.u., b to km:
15 a.u., b = 15 × 5.29177249e-14 km = 7.937658735e-13 km
A.u. Of Length to Kilometer Conversion Table
| a.u. of length | kilometer |
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A.u. Of Length
The atomic unit of length, also known as the Bohr radius (a₀), is approximately 5.29 x 10⁻¹¹ meters.
History/Origin
The Bohr radius is named after Niels Bohr, who proposed a model of the atom in 1913 where the electron orbits the nucleus at specific distances. The Bohr radius is the most probable distance between the proton and electron in a hydrogen atom in its ground state.
Current Use
The atomic unit of length is used in atomic physics to simplify calculations and equations.
Kilometer
A kilometer is a unit of length in the metric system, equal to one thousand meters.
History/Origin
The term "kilometer" is derived from the Greek words "khilioi" (thousand) and "metron" (measure). The kilometer was first defined as part of the metric system in France in 1795.
Current Use
The kilometer is the most widely used unit of distance for road signs and travel distances in the world, with the notable exceptions of the United States and the United Kingdom.