Convert microinch to Earth's polar radius
Please provide values below to convert microinch [µin] to Earth's polar radius [R_p], or Convert Earth's polar radius to microinch.
How to Convert Microinch to Earth's Polar Radius
1 µin = 3.99575110076257e-15 R_p
Example: convert 15 µin to R_p:
15 µin = 15 × 3.99575110076257e-15 R_p = 5.99362665114385e-14 R_p
Microinch to Earth's Polar Radius Conversion Table
| microinch | Earth's polar radius |
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Microinch
A microinch is a unit of length equal to one-millionth of an inch.
History/Origin
The microinch is a unit used for extremely small measurements in precision engineering and manufacturing.
Current Use
The microinch is used in fields like mechanical engineering and electronics to measure surface roughness and tolerances.
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.