Krdytkyu

0 I am facing a problem in my Laptop which is running Ubuntu 14.04 LTS with Windows 7 (dual boot). The problem is that my laptop continuously pressing key '1' or '6'. This problem occurs randomly at any time and when it happens I press that particular key and the problem temporarily stops. But again after a little while the problem repeats again. I don't know what to do, please help. 14.04 automatic share | improve this question asked Dec 6 at 3:20 Farhan Kanak 1 ...

9 7 I read about how to solve the Schrödinger equation for the quantum harmonic oscillator in one dimension. It started with the Schrödinger equation, $$ frac{p^2}{2m}psi(x, t)+frac{1}{2}momega^2x^2psi(x, t)=hat{E}psi(x, t) $$ It makes sense to me; that looks like energy conservation. Putting differential equations for the momentum operator, $$ frac{-hbar^2}{2m}frac{partial^2}{partial x^2}psi(x, t)+frac{1}{2}momega^2x^2psi(x, t)=hat{E}psi(x, t) $$ Then they try to make remove the dimensions from the equation, so they replace $hat{E}$ with a dimensionless $epsilon$ somehow, and divide the whole expression by $hbar$ . They then start a spree of confusing substitutions which mathematically are accurate, but appear to have no physical significance. I don't understand why we do any of that. What's wrong with...