Question

what is fermi or femto?​

Answer 1

Answer:

It is a unit of measurement of length.

Answer 2

Explanation:

The fermi is a unit of measurement of length

The metric unit prefix femto means one quadrillionth, or one (1) with fourteen (14) nulls in front of it, i.e. 0.000,000,000,000,001 or 1×10-15. That makes one femtometer (and one fermi) equal to one quadrillionth of a meter.