Convert Earth's equatorial radius to ell
Please provide values below to convert Earth's equatorial radius [R_e] to ell [ell], or Convert ell to Earth's equatorial radius.
How to Convert Earth's Equatorial Radius to Ell
1 R_e = 5580172.35345582 ell
Example: convert 15 R_e to ell:
15 R_e = 15 × 5580172.35345582 ell = 83702585.3018373 ell
Earth's Equatorial Radius to Ell Conversion Table
| Earth's equatorial radius | ell |
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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.
Ell
The ell is an obsolete unit of length, originally used for measuring cloth. Its length varied in different countries, but it was generally around 45 inches.
History/Origin
The word "ell" is derived from the Latin "ulna," meaning "forearm," as the unit was originally based on the length of the forearm.
Current Use
The ell is no longer in use.