Convert femtometer to Earth's polar radius
Please provide values below to convert femtometer [fm] to Earth's polar radius [R_p], or Convert Earth's polar radius to femtometer.
How to Convert Femtometer to Earth's Polar Radius
1 fm = 1.57313035463093e-22 R_p
Example: convert 15 fm to R_p:
15 fm = 15 × 1.57313035463093e-22 R_p = 2.3596955319464e-21 R_p
Femtometer to Earth's Polar Radius Conversion Table
| femtometer | Earth's polar 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 Polar Radius
The Earth's polar radius is the distance from the center of the Earth to the North or South Pole, approximately 6,356.8 kilometers.
History/Origin
The fact that the Earth is an oblate spheroid, flattened at the poles, has been known since the 18th century. Modern measurements are made with high precision.
Current Use
The Earth's polar radius is a key parameter in geodesy and is used to define the Earth's shape and gravitational field.