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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.
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.
In relation to the base unit of [length] => (meters), 1 X Unit (xu) is equal to 1.002004E-13 meters, while 1 Fermi (fermi) = 1.0E-15 meters.| 42100 X Unit | to common length units |
|---|---|
| 42100 xu | = 4.21843684E-9 meters (m) |
| 42100 xu | = 4.21843684E-12 kilometers (km) |
| 42100 xu | = 4.21843684E-7 centimeters (cm) |
| 42100 xu | = 1.3840015879265E-8 feet (ft) |
| 42100 xu | = 1.6608019055118E-7 inches (in) |
| 42100 xu | = 4.6133386264217E-9 yards (yd) |
| 42100 xu | = 2.6212151286487E-12 miles (mi) |
| 42100 xu | = 4.4587642321108E-25 light years (ly) |
| 42100 xu | = 1.5943700301569E-5 pixels (PX) |
| 42100 xu | = 2.636523025E+26 planck length (pl) |