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1 files changed, 4 insertions, 2 deletions

diff --git a/content/know/concept/stokes-law/index.pdc b/content/know/concept/stokes-law/index.pdc
index acc98af..dee40d6 100644
--- a/content/know/concept/stokes-law/index.pdc
+++ b/content/know/concept/stokes-law/index.pdc
@@ -356,8 +356,10 @@ This is an equation for the **terminal velocity** $U_t$,
 which we find to be as follows:
 
 $$\begin{aligned}
-    U_t
-    = \frac{2 a^2 (\rho_s - \rho_f) g_0}{9 \eta}
+    \boxed{
+        U_t
+        = \frac{2 a^2 (\rho_s - \rho_f) g_0}{9 \eta}
+    }
 \end{aligned}$$
 
 The falling sphere will accelerate until $U_t$,