Beamer: Frame Title and Subtitle « chooru::code

Beamer: Frame Title and Subtitle « chooru::code

\begin{frame}
\frametitle{What is hypersonics?}
\framesubtitle{Additional Complexities: Hypersonic Physical Phenomena}
\end{frame}

\begin{frame}What is hypersonics?}{Additional Complexities: Hypersonic Physical Phenomena}
\end{frame}