3.1.2 Greatest hits from previous weeks

3.1.2.1 Find eigen energies of time-independent Schrödinger equation

http://mathematica.stackexchange.com/questions/32293/find-eigen-energies-of-time-independent-schrodinger-equation

 
I'm trying to get the eigenvalues of a one dimensional time-independent Schrödinger equation, 
 
$-\frac{h^2}{2m_0}\frac{d^2\psi}{dx^2}+U(x)~\psi=Ei~\psi$ 
 
where U(x) is some potential and Ei is the  ...
 

- asked by xslittlegrass (33 votes), answered by Jens (36 votes)

3.1.2.2 How to create word clouds?

http://mathematica.stackexchange.com/questions/2334/how-to-create-word-clouds

 
Word clouds are rather useless fancy and visually appealing plots, where words are plotted with different sizes according to their frequency in a corpus. Many applications exist out there (Wordle,  ...
 

- asked by István Zachar (124 votes), answered by Heike (105 votes)