A unit of length formerly used in nuclear physics. It is equal to 10−15 metre. In SI units this is equal to 1 femtometre (fm). It was named after Enrico Fermi.
Chemistry
A unit of length formerly used in nuclear physics. It is equal to 10−15 metre. In SI units this is equal to 1 femtometre (fm). It was named after Enrico Fermi.