New posts in Observables

Does any basis belong to a set of eigenfunctions of some observable?

Question about Charge and Gauge Transformation

Not all self-adjoint operators are observables?

What's the deal with momentum in the infinite square well?

Is every observable a function of position and momentum?

Paradox about the Stern-Gerlach experiment with $B=0$, $\nabla B\ne 0$

Is hermiticity a basis-dependent concept?

Why hermitian, after all?

Why is a Hermitian operator a "quantum random variable"?

What is $\langle \phi | H | \psi \rangle$ in QM?