Magneto-optic effect

The magneto-optic effect occurs when a magnetic field influences how light behaves as it passes through a material. Specifically, the magnetic field can change the light's polarization — the direction in which the light waves oscillate. This effect allows scientists and engineers to control and measure magnetic fields and signals using light, enabling technologies like data storage, sensors, and optical isolators in communication systems. Essentially, it’s a way that magnetic fields can directly affect light's properties, opening up various applications relying on precise magnetic and optical interactions.