prefix
femto-; 10^-15
SI prefix meaning one quadrillionth (10^-15). Used in scientific and technical contexts with units such as meters, seconds, or farads.
フェムト秒レーザーは非常に短いパルスを発生させる。
Femtosecond lasers generate extremely short pulses.
この回路の容量は数フェムトファラドです。
The capacitance of this circuit is a few femtofarads.