structural:summarization
Duality with other properties

Normally angular momentum is considered to be a particle-like property, for instance a spinning top. However, light waves can have angular momentum when they form a vortex, as illustrated in the Figure. Electron waves with angular momentum have also been produced, with up to a thousand angular momentum quanta. These matter waves will diffract and interfere, while simultaneously having particle-like angular momentum so they will interact with magnetic fields, similar to a current loop.