Convert megameter to X-unit
Please provide values below to convert megameter [Mm] to X-unit [X], or Convert X-unit to megameter.
How to Convert Megameter to X-Unit
1 Mm = 9.97924317419767e+18 X
Example: convert 15 Mm to X:
15 Mm = 15 × 9.97924317419767e+18 X = 1.49688647612965e+20 X
Megameter to X-Unit Conversion Table
| megameter | X-unit |
|---|
Megameter
A megameter is a unit of length in the metric system equal to 10^6 meters.
History/Origin
The prefix "mega-" for 10^6 was adopted by the CGPM (General Conference on Weights and Measures) in 1873.
Current Use
The megameter is sometimes used to specify the diameters of planets and the distances of satellites.
X-Unit
An X-unit is a unit of length approximately equal to 1.002 x 10⁻¹³ meters.
History/Origin
The X-unit was proposed by the Swedish physicist Manne Siegbahn in 1919 for measuring the wavelengths of X-rays and gamma rays.
Current Use
The X-unit has been largely replaced by the angstrom and the picometer.