ANSWERS: 2
-
I think it's a picometer (one trillionth of a meter)
-
It's currently the yoctometer (ym) which is 10^-24 m (one trillionth of a trillionth of a meter) The yocto prefix was adopted in 1991 and is still the smallest prefix to be confirmed by SI.
Copyright 2023, Wired Ivy, LLC