Convert astronomical unit to femtometer
Please provide values below to convert astronomical unit [AU, UA] to femtometer [fm], or Convert femtometer to astronomical unit.
How to Convert Astronomical Unit to Femtometer
1 AU, UA = 1.495978707e+26 fm
Example: convert 15 AU, UA to fm:
15 AU, UA = 15 × 1.495978707e+26 fm = 2.2439680605e+27 fm
Astronomical Unit to Femtometer Conversion Table
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Astronomical Unit
The astronomical unit is a unit of length, now defined as exactly 149,597,870,700 meters. It is approximately the average distance between the Earth and the Sun.
History/Origin
Historically, the astronomical unit was the mean Earth-Sun distance. In 2012, the International Astronomical Union (IAU) redefined it as a fixed constant.
Current Use
The astronomical unit is used primarily for measuring distances within the Solar System or around other stars.
Femtometer
A femtometer is a unit of length in the metric system equal to 10^-15 meters. It is also known as a fermi.
History/Origin
The prefix "femto-" for 10^-15 was adopted by the CGPM (General Conference on Weights and Measures) in 1964. The unit is also named after the physicist Enrico Fermi.
Current Use
The femtometer is primarily used in nuclear physics to measure the size of atomic nuclei.