feat: add sections, and fill Introduction

Lab1.tex

@@ -10,6 +10,22 @@
 \begin{document}
 \maketitle
 
+\section{Introduction}
+Unlike DC signals, AC signals are time-varying, posing unique
+challenges to recording, characterizing and otherwise studying them.
+
+In this lab, we will focus on comparing the measurement of one aspect
+of an AC signal -- the RMS voltage -- as seen by two tools: the
+Digital Multimeter (DMM), and the oscillscope. We will also use
+numerical and analytical methods to model this circuit and derive
+expected RMS values for comparison.
+
+\section{Analytic Modeling Results}
+\section{Numerical Modeling Results}
+\section{Experimental Results}
+\section{Data Comparison}
+\section{Conclusions}
+
 \begin{longtable}[]{@{}lllllllll@{}}
 \toprule
 \endhead