Convert Earth's polar radius to inch
Please provide values below to convert Earth's polar radius [R_p] to inch [in], or Convert inch to Earth's polar radius.
How to Convert Earth's Polar Radius to Inch
1 R_p = 250265838.582677 in
Example: convert 15 R_p to in:
15 R_p = 15 × 250265838.582677 in = 3753987578.74016 in
Earth's Polar Radius to Inch Conversion Table
| Earth's polar radius | inch |
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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.
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.