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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.
In relation to the base unit of [length] => (meters), 1 Light Days (ld) is equal to 25900000000000 meters, while 1 Fermi (fermi) = 1.0E-15 meters.| 8178826639 Light Days | to common length units |
|---|---|
| 8178826639 ld | = 2.118316099501E+23 meters (m) |
| 8178826639 ld | = 2.118316099501E+20 kilometers (km) |
| 8178826639 ld | = 2.118316099501E+25 centimeters (cm) |
| 8178826639 ld | = 6.9498559694915E+23 feet (ft) |
| 8178826639 ld | = 8.3398271633898E+24 inches (in) |
| 8178826639 ld | = 2.3166186564972E+23 yards (yd) |
| 8178826639 ld | = 1.3162606002825E+20 miles (mi) |
| 8178826639 ld | = 22389980.969253 light years (ly) |
| 8178826639 ld | = 8.0062350855137E+26 pixels (PX) |
| 8178826639 ld | = 1.3239475621881E+58 planck length (pl) |