Convert femtometer to Earth's equatorial radius
Please provide values below to convert femtometer [fm] to Earth's equatorial radius [R_e], or Convert Earth's equatorial radius to femtometer.
How to Convert Femtometer to Earth's Equatorial Radius
1 fm = 1.5678559428874e-22 R_e
Example: convert 15 fm to R_e:
15 fm = 15 × 1.5678559428874e-22 R_e = 2.3517839143311e-21 R_e
Femtometer to Earth's Equatorial Radius Conversion Table
| femtometer | Earth's equatorial radius |
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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.
Earth's Equatorial Radius
The Earth's equatorial radius is the distance from the center of the Earth to the equator, approximately 6,378.1 kilometers.
History/Origin
The size and shape of the Earth have been a subject of study since ancient times. Modern measurements are made using satellite geodesy.
Current Use
The Earth's equatorial radius is a fundamental parameter in geodesy, geophysics, and astronomy. It is used in cartography and for defining the shape of the Earth.