Minor fixes, rename "Ion Sound Wave" and "Ito Process"

1 files changed, 2 insertions, 2 deletions

diff --git a/content/know/concept/magnetohydrodynamics/index.pdc b/content/know/concept/magnetohydrodynamics/index.pdc
index 6672a74..89d23db 100644
--- a/content/know/concept/magnetohydrodynamics/index.pdc
+++ b/content/know/concept/magnetohydrodynamics/index.pdc
@@ -333,7 +333,7 @@ This term can be dropped in any of the following cases:
 
 $$\begin{gathered}
     1
-    \gg \frac{\big| \vb{J} \cross \vb{B} / q_e n_e \big|}{\big| \vb{U} \cross \vb{B} \big|}
+    \gg \frac{\big| \vb{J} \cross \vb{B} / q_e n_e \big|}{\big| \vb{u} \cross \vb{B} \big|}
     \sim \frac{\rho v_\mathrm{char} / \tau_\mathrm{char}}{v_\mathrm{char} |\vb{B}| q_i n_i}
     \approx \frac{m_i n_i}{|\vb{B}| q_i n_i \tau_\mathrm{char}}
     = \frac{1}{\omega_{ci} \tau_\mathrm{char}}
@@ -366,7 +366,7 @@ where we have used Ampère's law to find $\vb{J} \sim \vb{B} / \mu_0 \lambda_\ma
 
 $$\begin{aligned}
     1
-    \ll \frac{\big| \vb{U} \cross \vb{B} \big|}{\big| \eta \vb{J} \big|}
+    \ll \frac{\big| \vb{u} \cross \vb{B} \big|}{\big| \eta \vb{J} \big|}
     \sim \frac{v_\mathrm{char} |\vb{B}|}{\eta \vb{J}}
     \sim \frac{v_\mathrm{char} |\vb{B}|}{\eta |\vb{B}| / \mu_0 \lambda_\mathrm{char}}
     = \mathrm{R_m}