deletions | additions       diff --git a/Orbits of a Photon.tex b/Orbits of a Photon.tex  index 76fa448..def1e61 100644  --- a/Orbits of a Photon.tex  +++ b/Orbits of a Photon.tex 
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\begin{equation}  \begin{split}  b^2 = \frac{l^2}{e^2} \\  W_{\rm{eff}}(r) = \frac{1}{r^2}(1-\frac{2GM}{r}) \frac{1}{r^2}(1-\frac{2M}{r})  \end{split}  \end{equation}