Convert Earth's polar radius to span (cloth)
Please provide values below to convert Earth's polar radius [R_p] to span (cloth) [span], or Convert span (cloth) to Earth's polar radius.
How to Convert Earth's Polar Radius to Span (Cloth)
1 R_p = 27807315.3980752 span
Example: convert 15 R_p to span:
15 R_p = 15 × 27807315.3980752 span = 417109730.971129 span
Earth's Polar Radius to Span (Cloth) Conversion Table
| Earth's polar radius | span (cloth) |
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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.
Span (Cloth)
A span is an obsolete unit of length, typically about 9 inches, based on the distance between the tip of the thumb and the tip of the little finger when the hand is fully extended.
History/Origin
The span has been used as a unit of measurement for thousands of years in many different cultures.
Current Use
The span is no longer a standard unit of measurement.