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Femto


 

Femto is a prefix (see all prefixes) to a unit and means that it is 10-15 times this unit, or, one quindecillionth (European) or one quadrillionth (American). Examples are one femtosecond or one femtometre.

Related Topics:
Prefix - See all prefixes - Femtosecond - Femtometre

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Adopted in 1964, it comes from the Danish or Norwegian femten, meaning fifteen.

Related Topics:
1964 - Danish - Norwegian

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