User talk:Visviva/SI
femtosecond: (metrology) An SI unit of time equal to 10−15 seconds (one quadrillionth of a second).
giganewton: (metrology) An SI unit of force equal to 109 newtons (one billion newtons).
femtosecond: (metrology) An SI unit of time equal to 10−15 seconds (one quadrillionth of a second).
giganewton: (metrology) An SI unit of force equal to 109 newtons (one billion newtons).