What is the origin, the symbol, and the factor of the femto- prefix?
by 
Egao No Genki
ANSWERS: 1
-
femto- is an SI prefix (symbol f) in the SI system of units denoting a factor of 10β15 or 0.000 000 000 000 001. Adopted in 1964 by the 12th ConfΓ©rence GΓ©nΓ©rale des Poids et Mesures [1], it comes from the Danish or Norwegian femten, Old Norse fimmtΓΒn, meaning fifteen. Examples: One femtosecond = 10^β15 s One femtojoule = 10^β15 J Note that the femtometre (10β15 of a metre) shares the same unit symbol (fm) with the older non-SI unit fermi, to which it is equivalent. The fermi, in honour of Enrico Fermi is often encountered in nuclear physics that is characteristic of this scale. 1000^β5 10^β15 femto Symbol:f Quadrillionth Billiardth 0.000 000 000 000 001
RELATED QUESTIONS
Copyright 2023, Wired Ivy, LLC