Noun
Faraday rotation (countable and uncountable, plural Faraday rotations)
English Wikipedia has an article on:Faraday rotationWikipedia
(physics) An interaction between a polarized electromagnetic pulse, such as a beam of light, and a magnetic field, in which the plane of polarization is rotated in proportion to the intensity of the component of the magnetic field in the direction of travel of the pulse.
They fall into two main classes: 4-port waveguide circulators based on Faraday rotation of waves propagating in a magnetised material, citation in which the four-port Faraday rotation circulator is proposed. Source: Internet