Often times in literature one comes across phrases such as "... X is no longer a good quantum number". I think it would be of value if somebody clarified what makes a "good quantu …

When a body moves aren't we supposed to say that each particles on the body moves with same velocity and so the de-broglie wave corresponding to each particle must have the same ve …

Hi all Ill start with saying I am very new to all this. I am a very geometric oriented person and I view things as images and not equations. So most times I can figure out and know …

Do you think the wavefunction is something which represents our knowledge of a system, or is it something physical? In the former case, could the same system be given a different w …

I have understood that an electron can be thought of both as a wave and as a particle. But I still don't understand why we can't give it a definite position...

Let's say you have an electron wave that hits something and let's assume the wave does not collapse to an electron and collide with that something. Is the amount of momentum transf …

Sorry people but some quantum mysteries look quite trivial to me. Wave function collapse for photons is actually subsampling of whole sample of photons. That way wave function col …

In the quantum suicide experiment, if many-worlds is true you'd end up miraculously surviving any suicide attempt. This forces you into an unlikely version of the universe, and eac …