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In reading journal articles (in physics), I often come across recurring equations in the Introduction sections. Sometimes they don't mention its name. For example, I come across

$$\begin{eqnarray*} E\Psi &=& {\skew{6}{\hat}{H}}\Psi\\ i\hbar\frac{\partial}{\partial t} &=& {\skew{6}{\hat}{H}}\Psi\\ \end{eqnarray*}$$

Yes, that's the Schrödinger equation (not that I actually understand it, just got it from Wikipedia). But what if I didn't know what it is? Is there some place I can type in the equation, then I'll know what its name is? Then from there, I'll know where to start looking for more information.

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up vote 7 down vote accepted

You could try http://uniquation.com/. This is basically a tex searcher, but it is better than a full text search. For instance search for \frac{a}{b} returns results which contain \frac{e}{m}.

I believe this is still in Beta though.

Caveat: I haven't used this site much.

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I've been reasonably successful typing the latex code on google. Try googling "\hbar i \frac{\partial \psi}{\partial t}=H\psi" to see what I mean.

Edit: try without the quotes first..

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It looks into the underlying TeX code in TeX-enabled websites. Not quite that Google understands what the TeX represents at all. Not exactly what I'm looking for, but this could be a step forward at least. –  Kit Feb 26 '11 at 1:23
    
Obviously.. But latex is the most popular way so there are good chances of finding what you want. –  Diego Feb 26 '11 at 3:09
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