Convert Earth's equatorial radius to femtometer
Please provide values below to convert Earth's equatorial radius [R_e] to femtometer [fm], or Convert femtometer to Earth's equatorial radius.
How to Convert Earth's Equatorial Radius to Femtometer
1 R_e = 6.378137e+21 fm
Example: convert 15 R_e to fm:
15 R_e = 15 × 6.378137e+21 fm = 9.5672055e+22 fm
Earth's Equatorial Radius to Femtometer Conversion Table
| Earth's equatorial radius | femtometer |
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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.
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.