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% Section numbering is automatic.  1. To observe Faraday effect in this lab, which says that the rotation of plane of polarization of light changes when applying a magnetic field:  $$I=I_{0}cos^{2}[\theta_{1}−\theta_{0}]$$  where $I_{0}$ is theoriginal light  intensity of the light after passing through the first polarizer  and I is the light intensity passing through two both  polarizers at angles $\theta_{1}$ and $\theta_{0}$. %\newline  %2.To experimentally determine the Verdet constant of a glass tube, which describes the strength of Faraday effect for a particular material: