Being a spatial dispersion effect, the induced optical activity exhibit different behavior under the operation of wave vector reversal, when compared with the Faraday effect : the optical activity increment associated with the electrogyration effect changes its sign under that operation, contrary to the Faraday effect.
42.
Using a sample of the optical glass that Davy had him make, Faraday discovered that an applied magnetic field could affect the polarization of light passing through the glass sample ( a dielectric material ), leading to what is called the Faraday effect and connecting these three forces.
43.
This is what our article on Faraday says-" In 1845, he discovered the phenomenon that he named diamagnetism, and what is now called the Faraday effect : The plane of polarization of linearly polarized light propagated through a material medium can be rotated by the application of an external magnetic field aligned in the propagation direction.
44.
Following the laws which govern the Faraday effect, the rotation of the targeted radiation is directly proportional to the strength of the magnetic field, the width of the vapor cell and the Verdet constant ( which is dependent on the temperature of the cell, wavelength of the light and sometimes intensity of the field ) of the vapor in the cell.
