deletions | additions       diff --git a/MLT.tex b/MLT.tex  index 1851464..9eda2c4 100644  --- a/MLT.tex  +++ b/MLT.tex 
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\begin{equation}  \Delta \T (\Delta r) = \Delta r \, \T \bigg[ -\frac{\D \ln \T}{\D r}- \bigg(-\frac{\D \ln \T'}{\D r}\bigg)\bigg],  \end{equation}  and using the assumption of pressure equilibrium, the definitions of pressure scale height $\hp$ and the gradients $\nabla$ and $\nabla'$ we obtain  \begin{equation}  \Delta \T (\Delta r) = - \frac{\D \ln \P}{\D r} \Delta r \, \T \bigg[ \frac{\D \ln \T}{\D \ln \P}- \bigg(\frac{\D \ln \T'}{\D \ln \P}\bigg)\bigg] = \Delta r \frac{\T}{\hp}\, (\nabla - \nabla'),  \end{equation}