Convert chain to Earth's polar radius
Please provide values below to convert chain [ch] to Earth's polar radius [R_p], or Convert Earth's polar radius to chain.
How to Convert Chain to Earth's Polar Radius
1 ch = 3.16463487180396e-06 R_p
Example: convert 15 ch to R_p:
15 ch = 15 × 3.16463487180396e-06 R_p = 4.74695230770593e-05 R_p
Chain to Earth's Polar Radius Conversion Table
| chain | Earth's polar radius |
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Chain
A chain is a unit of length equal to 66 feet, or 22 yards.
History/Origin
The chain was developed by English surveyor Edmund Gunter in the early 17th century. It was designed to be a convenient length for surveying land.
Current Use
The chain is still used in some surveying applications and is the length of a cricket pitch.
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.