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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.
Plethron is a measurement used in Ancient times, equal to 100 Greek feet (pous). It was roughly the width of a typical athletic running-track, and was used as the st ..more definition+
In relation to the base unit of [length] => (meters), 1 Fermi (fermi) is equal to 1.0E-15 meters, while 1 Greek Plethron (pleth) = 30.8 meters.| 4000 Fermi | to common length units |
|---|---|
| 4000 fermi | = 4.0E-12 meters (m) |
| 4000 fermi | = 4.0E-15 kilometers (km) |
| 4000 fermi | = 4.0E-10 centimeters (cm) |
| 4000 fermi | = 1.3123359580052E-11 feet (ft) |
| 4000 fermi | = 1.5748031496063E-10 inches (in) |
| 4000 fermi | = 4.3744531933508E-12 yards (yd) |
| 4000 fermi | = 2.4854847689493E-15 miles (mi) |
| 4000 fermi | = 4.227882887644E-28 light years (ly) |
| 4000 fermi | = 1.5118112140865E-8 pixels (PX) |
| 4000 fermi | = 2.5E+23 planck length (pl) |