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#### 17,938 subscribers a community for 6 years, 5 months

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r/AskPhysics exists to answer simple physics questions from physics students and non-physicists. No real rules except relevance and civility. If your basic physics question isn't answered in a day, you can post it in the Tuesday thread in /r/Physics (unless it's a homework-related physics question).

### How to use LaTeX?

First, you will need to install one of the recommended add-ons. To include an equation typeset in LaTeX in your post, put the LaTeX code between [; and ;].

[;i\hbar \frac{\partial}{\partial t} \Psi = \hat H\Psi;]