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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.| 1 Fermi | to common length units |
|---|---|
| 1 fermi | = 1.0E-15 meters (m) |
| 1 fermi | = 1.0E-18 kilometers (km) |
| 1 fermi | = 1.0E-13 centimeters (cm) |
| 1 fermi | = 3.2808398950131E-15 feet (ft) |
| 1 fermi | = 3.9370078740157E-14 inches (in) |
| 1 fermi | = 1.0936132983377E-15 yards (yd) |
| 1 fermi | = 6.2137119223733E-19 miles (mi) |
| 1 fermi | = 1.056970721911E-31 light years (ly) |
| 1 fermi | = 3.7795280352161E-12 pixels (PX) |
| 1 fermi | = 6.25E+19 planck length (pl) |