Quantum Theory

As a student, I asked why, in some types of waves, the square of the amplitude and the density of energy are directly proportional. I got answers based on general laws of physics. Then I asked why, in the De Broglie - Schrödinger waves, the square of the amplitude is related to probability and not to energy density. I got a response referring to an idea proposed by Max Born, without mention of the general laws of physics. If possible, I would like to understand what is the relationship between that idea of Max Born and the general laws of physics.

I have studied scientists and have listened to people like lawrence krauss and there is something missing. lawrence krauss says all you need is quantum mechanics to create a universe of nothing. First, he doesnt say where quantum mechanics comes from. Second, he doesn't explain how the rules of quantum mechanics is enforced, as far as I can tell the only thing enforcing the rules is his will (making him a God like charecter in his theory). I have searched long and hard for information on this. My basic question is, is it true that despite all our mathematical modelling (which we have got very very good at) we still don't know how the universe is a…

Math definition: integral of function within limits divided by difference of limits. QM definition: integral of complex conjugate of wave equation times function times wave equation within limits of minus to plus infinity.

Hello, I am an artist working in the field of photography. I am wondering, is the photoelectric effect considered "physical"? Because I read that photons have no mass... Any explanation or opinion appreciated. I hope I have posted in the right forum.

You know scientists who study quantum mechanics say that the same electron can be observed in two different positions at exactly the same time around the nucleus of an atom. How can this be? How can the same electron be at different places at the same time? I think we live in parallel universes where you have the same objects at different periods of time. You have atomA in UniverseBlue and you have the same atomA in UniverseGreen. In UniverseBlue, atomA's electron is at Position1, in UniverseGreen atomA's electron is at Position2. Because UniverseBlue and UniverseGreen overlap each other we see atomsA's electron at Position1 and Position2 at the same time. What do you …

Is it comparable to ocean waves, the wave properties of matter such as electrons?

Are there any fields that affect light

If I have four states in \ket{S_1}=\frac{1}{\sqrt{2}}(\ket{00}+\ket{+1})_{AB} \ket{S_2}=\frac{1}{\sqrt{2}}(\ket{-1}-\ket{10})_{AB} \ket{S_3}=\frac{1}{\sqrt{2}}(\ket{00}+\ket{+1})_{AB} \ket{S_4}=\frac{1}{\sqrt{2}}(\ket{00}+\ket{-1})_{AB}, and its density matrix is \rho=frac{1}{2}(\ket{S_1}\bra{S_1}+\ket{S_2}\bra{S_2}+\ket{S_3}\bra{S_3}+\ket{S_4}\bra{S_4}). Using the Holevo's theorem the bound of mutual information can be calculated as I(X;Y)\leqslant S(\rho)-\frac{1}{4}(S(\ket{S_1}\bra{S_1})+S(\ket{S_2}\bra{S_2})+S(\ket{S_3}\bra{S_3})+S(\ket{S_4}\bra{S_4}))=1.60087603669285. How to calculate the best measurement probability p from the accessible inform…

If I glow a white LED bulb and then put a color filter around it (for example, a red color filter or a violet color filter) , then will it change the frequency of light.

If I glow a white LED bulb and then put a color filter around it (for example, a red color filter or a violet color filter) , then will it change the frequency of light.

I'm a 7th grader and i would like help to better understand string theory and quantum theory in general.

Would it be similar to quantum physics in how we are viewing an atom. Would be still consider planets orbiting around the earth as planetary orbitals or would be take the uncertainty principle into account. If we zoom into an atom and were say the same size as an atom, would the quantum physics problems still arise.

Electrons have specific places where they can be in an atom. If so how does that fit in with probability density function?

Is wave properties of particles referring to classical mechanics waves?

Is it oscillating charges/accelerating charges that produce electromagnetic radiation?

This is a picture of hydrogen atom I think using quantum microscope, can you help me understand the picture, why is there a ring around the picture and also the difference colors and intensities (like its more intense color between nucleus and ring) representing?

is there

Whether we observe it or not, do electrons or subatomic particles in general occupy a specific point in space for a certain amount of time.

This is basically what I got out of my textbook but I switch it into my own words The uncertainty principle says that you can't know both the position and momentum of particle without it affecting one or the other. Is this correct, also could you add more depth to it like tell me WHY this is so... thanks in advance

Like why is my desk brown, why is my laptop black, why can I see all these things in difference colors, shades, textures and detail. My hypothesis is simply that electrons absorb and emit electromagnetic waves to our eyes. Is this true?

Are they fuzzy looking balls of energy. I know that they are excitation in their respective fields, but that doesn't help me to imagine it visually. I want to imagine how it looks according to current quantum theory.

Since everything which has mass has gravity, and the gravitational field is extends to non zero everywhere then does that mean light is always affected by gravity in even the slightest bit due to simple particles with mass existing and mass producing gravity.

Does every elementary particles have its own field in which the elementary particle is an excitation of its respective field.

So basically two questions 1. How do scientists see subatomic particles 2. How do they define their intrinsic properties to what accuracy (like mass, spin, charge etc)

If there is an electrostatic force between the electron and proton, why doesn't the electron go all the way into the nucleus, what is stopping the electron from doing that.