Note on the connection between the faraday rotation of plane of polarisation and the zeeman change of frequency of light vibrations in a magnetic field

Abstract

The rotation of the plane of polarisation of light in a magnetic field is due to the velocity of propagation of light circularly polarised in one direction being different from th at of light circu­larly polarised in the opposite direction. The Zeeman effect is due to a difference in the frequency of vibration of these circularly polarised waves. W hat is required is to connect the frequency of vibration w ith the velocity of propagation.