1 files changed, 2 insertions, 2 deletions
diff --git a/source/know/concept/hydrogen-atom/index.md b/source/know/concept/hydrogen-atom/index.md
index a8443dd..9692d10 100644
--- a/source/know/concept/hydrogen-atom/index.md
+++ b/source/know/concept/hydrogen-atom/index.md
@@ -525,7 +525,7 @@ $$\begin{aligned}
     \boxed{
         \frac{1}{\lambda_0}
         = \frac{\omega}{2 \pi c}
-        = \mathcal{R}\Big( \frac{1}{n_i^2} - \frac{1}{n_f^2} \Big)
+        = R_\mathrm{H} \bigg( \frac{1}{n_i^2} - \frac{1}{n_f^2} \bigg)
     }
 \end{aligned}$$
 
@@ -554,7 +554,7 @@ and is sometimes used as a unit in calculations:
 
 $$\begin{aligned}
     \mathrm{Ry}
-    = 2 \pi \hbar c R_\mathrm{H}
+    \equiv 2 \pi \hbar c R_\mathrm{H}
     = |E_1|
     = \frac{\mu}{2 \hbar^2} \bigg( \frac{q^2}{4 \pi \varepsilon_0} \bigg)^2
     \approx 13.61 \:\mathrm{eV}