# Tagged Questions

Partial differential equation which describes the time evolution of the wavefunction of a quantum system. It is one of the first and most fundamental equations of quantum mechanics.

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### Solving the 1-D Schrodinger equation for a free particle: Confused about 2 possible general solutions

I am following Griffiths' Introduction to Quantum Mechanics, as well as an online lecture that follows a different book, and both sources give different equations for the general solution of the 1-D ...
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### Proving One-dimensional Wave with Classic Expression [closed]

A general form of a one-dimensional wave is ψ(x) = sin kx where k is a constant. Show that this function is a solution to the classical expression ((d^2 ψ(x))/ dx^2)= -((2pi)/lambda)^2 ψ(x) What is ...
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### Hydrogen atom in quantum mechanics

I have problems following the calculations in Griffiths' Introduction to Quantum Mechanics (Chapter 4.2.1): If you apply the Schrödinger equation to the Coulomb potential you get the following ...
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### Is this interpretation of $\psi=\frac{1}{\sqrt{\pi a^{3}}}e^{-r/a}$ correct?

Apologies if this is stating the obvious, but I'm a non-physicist trying to understand Griffiths' discussion of the hydrogen atom in chapter 4 of Introduction to Quantum Mechanics. The wave equation ...
251 views