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A unit of length used to measure nuclear distances, = 10−15 meter. Named for the Italian physicist Enrico Fermi (1901–1954). Now obsolete, replaced by the SI term femtometer (symbol, fm); 1 fermi = 1 femtometer.
The x unit (symbol xu) is a unit of length approximately equal to 0.1 pm (10−13 m). It is used to quote the wavelength of X-rays and gamma rays.
In relation to the base unit of [length] => (meters), 1 Fermi (fermi) is equal to 1.0E-15 meters, while 1 X Unit (xu) = 1.002004E-13 meters.| 439800 Fermi | to common length units |
|---|---|
| 439800 fermi | = 4.398E-10 meters (m) |
| 439800 fermi | = 4.398E-13 kilometers (km) |
| 439800 fermi | = 4.398E-8 centimeters (cm) |
| 439800 fermi | = 1.4429133858268E-9 feet (ft) |
| 439800 fermi | = 1.7314960629921E-8 inches (in) |
| 439800 fermi | = 4.8097112860892E-10 yards (yd) |
| 439800 fermi | = 2.7327905034598E-13 miles (mi) |
| 439800 fermi | = 4.6485572349646E-26 light years (ly) |
| 439800 fermi | = 1.6622364298881E-6 pixels (PX) |
| 439800 fermi | = 2.74875E+25 planck length (pl) |