Convert inch to Earth's equatorial radius
Please provide values below to convert inch [in] to Earth's equatorial radius [R_e], or Convert Earth's equatorial radius to inch.
How to Convert Inch to Earth's Equatorial Radius
1 in = 3.98235409493399e-09 R_e
Example: convert 15 in to R_e:
15 in = 15 × 3.98235409493399e-09 R_e = 5.97353114240099e-08 R_e
Inch to Earth's Equatorial Radius Conversion Table
| inch | Earth's equatorial radius |
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Inch
An inch is a unit of length in the imperial and US customary systems of measurement. An inch was defined to be equivalent to exactly 25.4 millimeters in 1959. There are 12 inches in a foot and 36 inches in a yard.
History/Origin
The term "inch" was derived from the Latin unit "uncia" which was equivalent to "one-twelfth" of a Roman foot. The inch has had various standards throughout history, with the current definition being based on the international yard.
Current Use
The inch is mostly used in the United States, Canada, and the United Kingdom. It is also sometimes used in Japan (as well as other countries) in relation to electronic parts, like the size of display screens.
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.