diff --git a/lecture_notes/3-28/hydrogen atom b/lecture_notes/3-28/hydrogen atom
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+Theory of the Hydrogen Atom
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+    Derived from first principles the wave equation of an electron in the hydrogen atom.
+
+        -Start with Dirac Notation
+        - Replace with known general functions
+        - transform to eigenvalue equation in position space
+        - replace pieces with function F and find derivatives
+            F = ∑ Cₖρᵏ
+
+        pic 3 first take had factors that needed to be fixed
+
+        - Led to the Laguerre Polynomials
+            These are infinite, though, so
+        - Force Laguerre Polynomial solutions to truncate
+
+        - 
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diff --git a/lecture_notes/3-28/overview b/lecture_notes/3-28/overview
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+Developed Theory for The Hydrogen Atom