The Magneto-Optic Effect refers to the interaction between magnetic fields and light in certain materials. When a magnetic field is applied to these materials, it can change the polarization of light passing through them. This effect is commonly observed in materials like garnets and ferromagnetic substances. This phenomenon is utilized in various applications, including optical isolators and magneto-optic storage devices. By manipulating light with magnetic fields, these technologies enhance data storage and improve signal integrity in optical systems.