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Noah Phipps added subsection_OZ2_subsubsection_Sunburn_begin__.tex
over 7 years ago
Commit id: e6b78c964998dfc4c2840107569f54d35f4d2ed9
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\subsection{OZ2}
\subsubsection{Sunburn}
\begin{itemize}
\item Sun radiates electromagnetic radiation, EMR
\item Part of spectrum corresponds to energy required to break chemical bonds in DNA
\begin{itemize}
\item Damages genes and can lead to skin cancer
\end{itemize}
\item Brief exposure damages proteins, and can irritate blood vessels, giving sunburn
\end{itemize}
\subsubsection{Chemical Sunscreens}
\begin{itemize}
\item Most damaging part of spectrum is UV
\item Most UV absorbed in upper atmosphere
\item Sunscreens often contain benzene rings
\end{itemize}
\subsubsection{Atmospheric Screening}
\begin{itemize}
\item Ozone absorbs UV-B and UV-C
\item Significant pollutant at ground level
\begin{itemize}
\item Photochemical smog
\end{itemize}
\item Radiation not screened in ionosphere, so ionises molecules
\end{itemize}
