Convert femtometer to vara castellana
Please provide values below to convert femtometer [fm] to vara castellana [vara castellana], or Convert vara castellana to femtometer.
How to Convert Femtometer to Vara Castellana
1 fm = 1.19738682299749e-15 vara castellana
Example: convert 15 fm to vara castellana:
15 fm = 15 × 1.19738682299749e-15 vara castellana = 1.79608023449624e-14 vara castellana
Femtometer to Vara Castellana Conversion Table
| femtometer | vara castellana |
|---|
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.
Vara Castellana
The Castilian vara is an old Spanish unit of length, approximately 83.59 centimeters.
History/Origin
The vara was a common unit of length in Spain. The Castilian vara was the standard vara of the Kingdom of Castile.
Current Use
The Castilian vara is an obsolete unit of measurement.