Convert femtometer to chain (US survey)
Please provide values below to convert femtometer [fm] to chain (US survey) [ch (US)], or Convert chain (US survey) to femtometer.
How to Convert Femtometer to Chain (Us Survey)
1 fm = 4.97095959595477e-17 ch (US)
Example: convert 15 fm to ch (US):
15 fm = 15 × 4.97095959595477e-17 ch (US) = 7.45643939393215e-16 ch (US)
Femtometer to Chain (Us Survey) Conversion Table
| femtometer | chain (US survey) |
|---|
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.
Chain (Us Survey)
A U.S. survey chain is a unit of length equal to 66 U.S. survey feet.
History/Origin
The U.S. survey chain is based on the U.S. survey foot, which was slightly different from the international foot. The use of survey units was officially phased out in 2022.
Current Use
The U.S. survey chain was used for land surveying in the United States.