23 Unusually Odd Measurement Units People Actually Use

A barn is a particle physics unit that (along with the femtobarn and inverse femtobarn), is used to measure how many particles hit a detector in collider experiments.

The beard-second is a unit of length inspired by the light-year but used for extremely short distances such as those in integrated circuits. 1 Beard-Second equals 5 nanometers.

The Sami people of Northern Finland have a unit of measurement called the ‘poronkusema.’ It is the distance a reindeer can travel before needing to stop to urinate.