Parece que no puedo entender por qué mi imagen no se genera cuando compilo mi documento de látex.

Question

Estoy intentando hacer un informe de laboratorio y quiero que algunas secciones/subsecciones estén en dos columnas, pero cuando intento cambiarlo a dos columnas, no genera mi imagen cuando la compilo. Intenté usar \includegraphics[width=0.5\textwidth]{chapter/introduction/Thermionic.png}el cual funciona bien, pero quiero usarlo \begin{figure} \end{figure}porque necesito incluir un título y etiquetarlo. A continuación se muestra mi código para esto.

\begin{multicols}{2}

When a metal filament is heated in a vacuum by passing a sufficient large current along the filament, electrons are emitted. By applying a positive voltage to an anode nearby, a current will start flowing between the filament (which acts as a cathode) and the anode. This setup is known as the \textbf{thermionic diode}. Figure \ref{fig:thermdiode} shows the schematic of a thermionic diode similar to the one used in the experiment. \cite{labbook}

\begin{figure}[h!]
  {\includegraphics[width = 0.5\textwidth]{chapter/introduction/Thermionic.png}}
    
  \caption{Schematic Diagram of a Thermionic Diode  \cite{labbook}}
  \label{fig:ThermDiode}
\end{figure}

%\includegraphics[width=0.5\textwidth]{chapter/introduction/Thermionic.png}
\end{multicols}

Parece que no puedo entender qué hay de malo en mi código. Cualquier ayuda sería apreciada.

Answer 1

El mecanismo flotante de LaTeX está parcialmente deshabilitado en multicols. Entonces puedes usar \captionof.

\documentclass{article}
\usepackage{showframe}
\usepackage{graphicx}
\usepackage{caption}
\usepackage{multicol}
\begin{document}
\begin{multicols}{2}
When a metal filament is heated in a vacuum by passing a sufficient large current along the filament, electrons are emitted. By applying a positive voltage to an anode nearby, a current will start flowing between the filament (which acts as a cathode) and the anode. This setup is known as the \textbf{thermionic diode}. \figurename~\ref{fig:ThermDiode} shows the schematic of a thermionic diode similar to the one used in the experiment.
\begin{minipage}{\linewidth}
\centering
\includegraphics[width = 0.5\textwidth]{example-image}
\captionof{figure}{Schematic Diagram of a Thermionic Diode}
\label{fig:ThermDiode}
\end{minipage}
\end{multicols}
\end{document}