The tweaks and fixes never stop

1 files changed, 1 insertions, 0 deletions

diff --git a/source/know/concept/fabry-perot-cavity/index.md b/source/know/concept/fabry-perot-cavity/index.md
index 6eefc6e..c013f1d 100644
--- a/source/know/concept/fabry-perot-cavity/index.md
+++ b/source/know/concept/fabry-perot-cavity/index.md
@@ -50,6 +50,7 @@ $$\begin{aligned}
     A_4 e^{i k_m n_R \ell/2}
     &= A_2 e^{- i k_m n_C \ell/2} + A_3 e^{i k_m n_C \ell/2}
 \end{aligned}$$
+
 $$\begin{aligned}
     - i k_m n_L A_1 e^{i k_m n_L \ell/2}
     &= - i k_m n_C A_2 e^{i k_m n_C \ell/2} + i k_m n_C A_3 e^{- i k_m n_C \ell/2}