Convert vara castellana to Earth's polar radius
Please provide values below to convert vara castellana [vara castellana] to Earth's polar radius [R_p], or Convert Earth's polar radius to vara castellana.
How to Convert Vara Castellana to Earth's Polar Radius
1 vara castellana = 1.31380296193073e-07 R_p
Example: convert 15 vara castellana to R_p:
15 vara castellana = 15 × 1.31380296193073e-07 R_p = 1.9707044428961e-06 R_p
Vara Castellana to Earth's Polar Radius Conversion Table
| vara castellana | Earth's polar radius |
|---|
Vara Castellana
The Castilian vara is an old Spanish unit of length, approximately 83.59 centimeters.
History/Origin
The vara was a common unit of length in Spain. The Castilian vara was the standard vara of the Kingdom of Castile.
Current Use
The Castilian vara is an obsolete unit of measurement.
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.