Convert femtometer to light year
Please provide values below to convert femtometer [fm] to light year [ly], or Convert light year to femtometer.
How to Convert Femtometer to Light Year
1 fm = 1.0570008340247e-31 ly
Example: convert 15 fm to ly:
15 fm = 15 × 1.0570008340247e-31 ly = 1.58550125103706e-30 ly
Femtometer to Light Year Conversion Table
| femtometer | light year |
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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.
Light Year
A light-year is the distance that light travels in a vacuum in one Julian year.
History/Origin
The concept of the light-year as a unit of distance in astronomy emerged in the mid-19th century. The first recorded use of the term was in a German astronomical publication in 1851.
Current Use
The light-year is used to express distances to stars and other astronomical objects on a galactic and intergalactic scale, especially in popular science and non-specialist contexts.