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The light-second is a unit of length useful in astronomy, telecommunications and relativistic physics. It is defined as the distance that light travels in free space ..more definition+
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 Seconds (ls) is equal to 299800000 meters, while 1 Fermi (fermi) = 1.0E-15 meters.663300 Light Seconds | to common length units |
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663300 ls | = 198857340000000 meters (m) |
663300 ls | = 198857340000 kilometers (km) |
663300 ls | = 1.9885734E+16 centimeters (cm) |
663300 ls | = 6.5241909448819E+14 feet (ft) |
663300 ls | = 7.8290291338583E+15 inches (in) |
663300 ls | = 2.1747303149606E+14 yards (yd) |
663300 ls | = 123564222440.94 miles (mi) |
663300 ls | = 0.02101863862171 light years (ly) |
663300 ls | = 7.5158689153851E+17 pixels (PX) |
663300 ls | = 1.242858375E+49 planck length (pl) |