The existence of this effect in lead glass provides a way of measuring the current in power lines, while measurements of this effect for the interstellar medium are used to determine electron density.
The existence of this effect in lead glass provides a way of measuring the current in power lines, while measurements of this effect for the interstellar medium are used to determine electron density. Quantum- mechanically, this effect results from Zeeman splitting, and can be derived from classical electrodynamics by introducing into Maxwell's equations the cyclotron frequency and calculating the resulting index of refraction. The angle corresponding to this effect is given by the path distance times the magnetic field strength times the Verdet constant. FTP, name this magneto- optical effect in which the plane of polarization of light rotates when the light propagates parallel to a magnetic field, named for a famous English physicist who also has a law, a constant, and a cage.
The existence of this effect in lead glass provides a way of measuring the current in power lines, while measurements of this effect for the interstellar medium are used to determine electron density.
{Faraday} rotation or effect