Recent content by Kavi

  1. K

    B Can we say a photon doesn't exist until the wavefunction collapses?

    Information may exist in discrete chunks. A sentence can either be a full sentence which makes sense or a partial one which doesn't. In logic a piece of information exists in discrete chunks called well formes formulas, anything not satisfying those laws is not valid information. In a similar...
  2. K

    B Can we say a photon doesn't exist until the wavefunction collapses?

    @PeroK Just to clarify, when i said photon above, i meant a discrete quanta of energy whether it is in the field, or wherever it is, or whether it is confined to an atom in its localised state. I just dont know what to call a discrete quanta of light in between emission and interaction, when...
  3. K

    B Can we say a photon doesn't exist until the wavefunction collapses?

    OK guys thanks for hearing me out. For the sake of discussion I will respond to the above posts. @PeterDonis "First, collapse of the wave function is not necessarily an actual physical process" Lets take the converse process. An atom absorbs a photon and then it elevates an electron to a...
  4. K

    B Can we say a photon doesn't exist until the wavefunction collapses?

    I am sure this sounds silly but.. Between being emitted and interacting, a photon gives us no information as to where it is in space. If we know both where a photon was emitted from and where it then interacted, we can say that it travelled in a straight line. But we actually dont know. So in...
  5. K

    I De Broglie Wavelength at rest: λ = h/p = h/0 when v=0?

    De Broglie Wavelength is λ = h / p. So at rest, v=0, and p=mv, so p=0. This means that λ = h/p = h/0 so we run into a divide by 0 issue, or infinite wavelengths for objects at rest. Is this line of reasoning flawed? Or can we consider v=1 for rest masses? Time Dilation is related to v. The...
  6. K

    I Question about Radiationless De-Excitation

    Hi, thanks for that. I found the below explanation on another site but I am not sure if it is exactly correct? https://physics.stackexchange.com/questions/581123/why-are-there-fewer-lines-on-the-absorption-spectrum-than-on-the-emission-spectr?rq=1
  7. K

    How to prove a mathematical logical problem with predicates?

    It was a long time since I studied this but from the OPs wording PREMISE1: Every city with more than 5 million inhabitants is a metropolis. PREMISE2: ABC is a city with more than 5 million inhabitants. CONCLUSION: There is some city that is a metropolis. (Edit: Ok I understand, I think I...
  8. K

    How to prove a mathematical logical problem with predicates?

    I cant remember the exact syntax rules but I think you have to use contradiction to prove these. It will go like this: 1. Premise: ForAll x If x pop > 5mill then x is a metro 2. Premise: ThereExist y such that pop y > 5mill 3. ASSUME: Not Exists z such that z is a metro 4. From 3...
  9. K

    I Question about Radiationless De-Excitation

    Thanks guys, the responses helped, and I did some more researching and found what I was looking for. Basically, what I meant to ask for was the difference between the emission spectrum and the absorption spectrum, but I didnt know to frame the question in those terms. If I understand this...
  10. K

    I Question about Radiationless De-Excitation

    Hello, I understand that an electron in an atom can: 1. Absorb any amount of energy from a photon and become excited 2. It may move to a higher energy orbit or remain in the current orbit 3. To move to a lower energy orbit, it must release excess energy so it is at the ground level of the...
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