Mostly done

Author: Daniel J. Perry

sheet.tex

@@ -82,6 +82,7 @@ \section{Constants}
 
 \begin{alignat*}{2}
     c   &= \scinot{2.998}{8}   && \quad \mathrm{m / s}\\
+    h   &= \scinot{6.626}{-34} && \quad \mathrm{J \cdot s}\\
     q_e &= \scinot{1.602}{-19} && \quad \mathrm{C}\\
     m_e &= \scinot{9.109}{-31} && \quad \mathrm{kg}\\
     \mu_e &= \scinot{-9.285}{-24} && \quad \mathrm{J/T}\\
@@ -324,6 +325,7 @@ \section{Maxwell's Equations}
 \newpage
 % --------------------------------------------------------------------
 \begin{multicols*}{4}
+
 \begin{center}
     \Large
     Physics \textrm{I} \\
@@ -416,6 +418,38 @@ \subsection{Waves}
     -x
 \end{align*}
 
+\vfill\null\columnbreak
+\begin{center}
+    \Large
+    Optics
+\end{center}
+
+\section{Mirrors and Refraction}
+
+\begin{align*}
+    n &= \frac{c}{v}\\
+      &= \frac{\lambda_0}{\lambda}\\
+    E &= hf && (\text{Photon Energy})\\
+    n_1 \sin \theta_a &= n_2 \sin \theta_b && (\text{Snell's Law})\\
+    \sin \theta_c &= \frac{n_1}{n_2} && (\text{Critical Angle})\\
+    I &= I_0\cos^2 \theta && (\text{Malus Law})\\
+    \tan \theta_p &= \frac{n_2}{n_1} && (\text{Brewster's Angle})\\
+    n_2 &= \frac{d_\text{real}}{d_\text{app}}\\
+    I &= \left({\frac{n_1 - n_2}{n_1 + n_2}}\right)^2I_0 &&
+    (\text{Reflected intensity})
+\end{align*}
+
+\section{Lenses}
+
+\begin{align*}
+    f &= \frac{R}{2}\\
+    \frac{1}{f} &= \left({\frac{n_2}{n_1} - 1}\right)
+    \left({\frac{1}{R_1} - \frac{1}{R_2}}\right) && (\text{Lens
+    Maker's})\\
+    &= \frac{1}{s} + \frac{1}{s'}\\
+    m &= \frac{y'}{y} = -\frac{s'}{s}
+\end{align*}
+
 \end{multicols*}
 \end{document}