Convert Earth's polar radius to femtometer
Please provide values below to convert Earth's polar radius [R_p] to femtometer [fm], or Convert femtometer to Earth's polar radius.
How to Convert Earth's Polar Radius to Femtometer
1 R_p = 6.3567523e+21 fm
Example: convert 15 R_p to fm:
15 R_p = 15 × 6.3567523e+21 fm = 9.53512845e+22 fm
Earth's Polar Radius to Femtometer Conversion Table
| Earth's polar radius | femtometer |
|---|
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.
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.