I wanted to ask for help with a concept in quantum mechanics that I don't understand. I was reading that if $V(x) = V(-x)$, then the solution of the time-independent Schrödinger equation is $\psi(x) = \pm \psi(-x)$, i.e., it is either symmetric (even) or antisymmetric (odd). However, here is my d...

It is often said that the Bell test disqualifies "local realistic" theories from quantum physics. But some people emphasize the issue of realism, while others emphasize the issue of locality. For instance, an exchange took place some years ago between Lee Smolin and Jeremy Bernstein; it is emblem...

I had for a long time been of the belief that steaming food (say broccoli) was faster than boiling it. That is, over a fixed period of time, the heat transferred from steam in a closed pot of boiling water would exceed the heat transferred by the boiling water if an object were surrounded by only...