Definition[]
A femtosecond (FS) is one quadrillionth of a second. It also can be expressed as 1,000 picoseconds or 1,000,000 nanoseconds.
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A femtosecond (FS) is one quadrillionth of a second. It also can be expressed as 1,000 picoseconds or 1,000,000 nanoseconds.