In this question I wrote
$$|\mathbf{k_{scat}}| = \frac{2 \pi}{h} \sqrt{2 m_e e V}$$
where $h$ is the Planck constant.
In physics we have h-bar which is $h/ 2 \pi$ but I don't know how to add h-bar using MathJax.
In this question I wrote
$$|\mathbf{k_{scat}}| = \frac{2 \pi}{h} \sqrt{2 m_e e V}$$
where $h$ is the Planck constant.
In physics we have h-bar which is $h/ 2 \pi$ but I don't know how to add h-bar using MathJax.
\hbar
produces $\hbar$ (as @IvoTerek has mentioned) and \hslash
produces $\hslash$.
Generally, you could refer to MathJax's docs for LaTeX commands/symbols supported by MathJax and page 20-22 of amsfonts' user guide for a list of symbols with their corresponding commands.
\hbar
should produce $\hbar$. $\endgroup$