Convert millimeter to Earth's equatorial radius
Please provide values below to convert millimeter [mm] to Earth's equatorial radius [R_e], or Convert Earth's equatorial radius to millimeter.
How to Convert Millimeter to Earth's Equatorial Radius
1 mm = 1.5678559428874e-10 R_e
Example: convert 15 mm to R_e:
15 mm = 15 × 1.5678559428874e-10 R_e = 2.3517839143311e-09 R_e
Millimeter to Earth's Equatorial Radius Conversion Table
| millimeter | Earth's equatorial radius |
|---|
Millimeter
A millimeter is a unit of length in the metric system, equal to one-thousandth of a meter.
History/Origin
The prefix "milli-" comes from the Latin word "mille," meaning thousand. The millimeter was part of the original metric system adopted in France in 1795.
Current Use
The millimeter is widely used in engineering and manufacturing for high-precision measurements. It is also a common unit in construction and for measuring small objects.
Earth's Equatorial Radius
The Earth's equatorial radius is the distance from the center of the Earth to the equator, approximately 6,378.1 kilometers.
History/Origin
The size and shape of the Earth have been a subject of study since ancient times. Modern measurements are made using satellite geodesy.
Current Use
The Earth's equatorial radius is a fundamental parameter in geodesy, geophysics, and astronomy. It is used in cartography and for defining the shape of the Earth.