For 10 points, name this type of field that is responsible for the properties of nickel and iron's attraction to each other.
One of these entities causes the polarization plane to be moved in the Faraday Effect, and the Voigt Effect involves birefringence caused by one of these entities. When a strong one of these disrupts orbital and spin angular momentum, it is the Paschen-Back Effect, which is an amplified form of the spectral line splitting caused by one of these entities called the (*) Zeeman Effect. One of these fields is formed whenever an electric field's strength changes; that phenomenon was proven by Maxwell when he modified Ampere's law. For 10 points, name this type of field that is responsible for the properties of nickel and iron's attraction to each other.
One of these entities causes the polarization plane to be moved in the Faraday Effect, and the Voigt Effect involves birefringence caused by one of these entities.
{magnetic} field