hokhani's latest activity

No, as is explicitly stated in wiki article: https://en.wikipedia.org/wiki/Particle_in_a_box#Momentum_wave_function And also was...

The wavefunction is zero outside the box, so you don't strictly have two exact but opposite momenta. Also, these two momenta are further...

These solution wave functions must be zero outside the box. They are not simple sinusoids functions. Their momentum wave functions do...

The momentum uncertainty is just ##\sqrt{\langle p^2\rangle - \langle p \rangle^2}##.

Here, do you also consider the deviation from the mean momentum (which is zero) a criterion of uncertainty?

Right, but there are two opposite momentum values for the particle in the box. So, the momentum uncertainty in the box is within two...

As far as I know about the position -momentum uncertainty if a quantum particle is more confined, we expect its momentum to be more...

Thanks for your answer. If photon is like wave, I expect after turning off the lamp to be able to detect again in it's first-detected...

I know this is a typo but lambs do emit photons (even in vacuum).

These are two different questions. "Moving in a specific direction" is a question about momentum. Photons do have a well-defined...

Consider a light source, like lamp, that radiates photons in vacuum. Can we detect a particular photon, moving in a specific direction...