diff --git a/.obsidian/app.json b/.obsidian/app.json
index afb77c49d..935795b75 100755
--- a/.obsidian/app.json
+++ b/.obsidian/app.json
@@ -3,5 +3,12 @@
   "vimMode": true,
   "showLineNumber": true,
   "propertiesInDocument": "visible",
-  "promptDelete": false
+  "promptDelete": false,
+  "pdfExportSettings": {
+    "includeName": true,
+    "pageSize": "Letter",
+    "landscape": false,
+    "margin": "0",
+    "downscalePercent": 100
+  }
 }
\ No newline at end of file
diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index a78e5f30e..629d2ccc4 100755
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -174,8 +174,10 @@
       "obsidian-full-calendar:Open Full Calendar": false
     }
   },
-  "active": "bfc2da582280b85c",
+  "active": "051e27f279a6d413",
   "lastOpenFiles": [
+    "302. NUCE 2100 - Fundamentals of Nuclear Engineering/Pasted image 20240827195025.png",
+    "302. NUCE 2100 - Fundamentals of Nuclear Engineering/2024-08-27 Introduction.md",
     "302. NUCE 2100 - Fundamentals of Nuclear Engineering/Pasted image 20240827193439.png",
     "302. NUCE 2100 - Fundamentals of Nuclear Engineering/Pasted image 20240827190612.png",
     "1. Daily Notes/8. August/2024-08-27.md",
@@ -192,7 +194,6 @@
     "6. Researching Techniques/Setting up Neovim for Python.md",
     "6. Researching Techniques/Setting up a virtual python environment (venv).md",
     "301. ME 2016 - Nonlinear Dynamical Systems 1/2024-08-26 Python Introduction.md",
-    "302. NUCE 2100 - Fundamentals of Nuclear Engineering/2024-08-27 Introduction.md",
     "Random things I found that I should look into.md",
     "99. Getting Used to Obsidian/Calendar for Obsidian.md",
     "1. Daily Notes/8. August/2024-08-23.md",
diff --git a/302. NUCE 2100 - Fundamentals of Nuclear Engineering/2024-08-27 Introduction.md b/302. NUCE 2100 - Fundamentals of Nuclear Engineering/2024-08-27 Introduction.md
index 1282fb1b1..e83e01cb4 100644
--- a/302. NUCE 2100 - Fundamentals of Nuclear Engineering/2024-08-27 Introduction.md	
+++ b/302. NUCE 2100 - Fundamentals of Nuclear Engineering/2024-08-27 Introduction.md	
@@ -66,6 +66,7 @@ Some ways atoms are unstable:
 
 If the ratio of neutrons to protons is between 1-2, the atom is stable.
 
+# Nuclear Decay
 Nature will always break apart unstable atoms:
 1. Convert neutrons into protons (or v.v.)
 2. Split into two nuclei
@@ -98,3 +99,8 @@ Two basic modes: both are beta decay (+/-)
 Neutrinos also get ejected
 
 ![[Pasted image 20240827193439.png]]
+
+## Chart of the Nuclides
+The chart of the nuclides is how we understand chains of decay, and what will turn in to what. 
+![[Pasted image 20240827195025.png]]
+[A potentially useful interactive website](https://www-nds.iaea.org/relnsd/vcharthtml/VChartHTML.html)
diff --git a/302. NUCE 2100 - Fundamentals of Nuclear Engineering/Pasted image 20240827195025.png b/302. NUCE 2100 - Fundamentals of Nuclear Engineering/Pasted image 20240827195025.png
new file mode 100644
index 000000000..0119be13c
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