The attometre is a subatomic measurement representing 10⁻¹⁸ metres. It is used in particle physics to describe the scale of quarks and the weak nuclear force. At this scale, distances are a thousand times smaller than a proton, requiring high-energy particle accelerators to probe.
Heard on the job
The cross-section calculations for the scattering event were resolved down to a few attometres.
Also heard as
- attometer