Recent content by sydfloyd

I'm under the impression that the parity operator transforms x \rightarrow -x. Let's say that f(x) = \frac{\partial \psi (x) }{\partial x} . Then P f(x) = f(-x) = \frac{\partial \psi (-x) }{\partial (-x)} = - \frac{\partial \psi (-x) }{\partial x} , right? I feel that something is...

Homework Statement The parity operator is defined as P \psi (x) = \psi (-x). Show that P and p_x anti-commute, that is, \{ P,p_x \} = Pp_x + p_xP = 0 . Homework Equations P \psi (x) = \psi (-x) p_x = - i \hbar \frac{\partial}{\partial x} The Attempt at a Solution \{ P,p_x \}...

Homework Statement This isn't really a homework question, but something I've been wanting to know out of curiosity in David Griffiths' Introduction to Electrodynamics. On pages 131 and 132, there is a Fourier series, V(x,y) = \frac{4V_0}{\pi}\sum_{n=1,3,5...}\frac{1}{n}e^{\frac{-n \pi...