deletions | additions       diff --git a/subsection_Direct_Fit_Method_We__.tex b/subsection_Direct_Fit_Method_We__.tex  index c79319f..bfdf359 100644  --- a/subsection_Direct_Fit_Method_We__.tex  +++ b/subsection_Direct_Fit_Method_We__.tex 
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We plott the photodiode voltage versus angle of the polarizer with and without a magnetic field applied as shown in figure \ref{fig:directmethoddata}. It can be seen from the graph that the curve shifts a little bit, which is a direct result of the magnetic field. By applying curve fit to our data points, we find the phase shift between two curves is 4 degrees($d\theta$). The current provided to induce a magnetic field is -3A, which can be translated to dB using equation \ref{magneticfield}. With these numbers, we are able to calculate Verdet constant using equation :  \begin{equation}  \lable{6}  c_v=\frac{1}{L}\frac{d\theta}{dB}  \end{equation}  where L is the length of the solenoid, which is 0.1m in our case.