deletions | additions       diff --git a/Wave Propagation.tex b/Wave Propagation.tex  index 6443d8f..3fe59f4 100644  --- a/Wave Propagation.tex  +++ b/Wave Propagation.tex 
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\label{eqn:magnetodisp3}  k \simeq \pm \frac{N k_\perp}{\sqrt{2}\mu v_A} \big( 1 \pm i \big).  \end{equation}  Therefore, magneto-gravity waves become evanescent in regions of very strong magnetic field. In essence, low frequency waves can  reflect off the stiff field lines, similar to low frequency fluid waves reflecting off a solid boundary. The transition from propagating to evanescent magneto-gravity waves occurs when \begin{equation}  \label{eqn:magnetogravity}  2 \mu v_A \sim \frac{\omega^2}{N k_\perp} \, ,