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With all due respect, this sounds like an opinion without arguments. There are always areas of physics where there is not enough clarity at the moment, so there is place for debates, opinions, and arguments. Sometimes it happens because there are not enough experimental results. For example, at...

So we disagree. Again, one can have a different opinion, arguing that observations indicate what maximum energy one can extract. This is one way to look at this matter. However, one can argue that it would be natural to assign the same energy to each photon with the same frequency and to...

Sounds reasonable. Also sounds reasonable but seems to be in tension with the previous statement. One could argue that the "arbitrary additive constant" is actually observable, as the maximum energy that can be extracted from a system is the energy of the system as measured from the vacuum...

It looks like the following may be relevant: https://en.wikipedia.org/wiki/Matter_wave_clock https://en.wikipedia.org/wiki/Zitterbewegung So can something like Zitterbewegung frequency observed experimentally? The frequency is very high, so one can have doubts about experimental articles...

Schrödinger's interpretation has some attractive aspects, and peer-reviewed articles in favor of it appear from time to time (e.g., Sebens, C.T. Found. Phys. 2021, 51, 75; Barut, A.O. Found. Phys. 1988, 18, 95–105). However, the interpretation has some difficulties. You mentioned some of them...

My article has been published in Quantum Reports. Expanded abstract: There is currently no consensus on the interpretation of quantum theory, so this article may be of interest as it contains a review and new results on some relevant mathematical models emulating well-known quantum theories...

My article has been published in Entropy . Abstract: Schrödinger noticed in 1952 that a scalar complex wave function can be made real by a gauge transformation. The author showed recently that one real function is also enough to describe matter in the Dirac equation in an arbitrary...

So we at least seem to agree that "maybe the cat can be both dead and alive, maybe not, but at this stage we just cannot be sure", that is good enough for me. As for molecules being "cooled down during experiments to the point where only a few degrees of freedom with energy levels sufficiently...

Experimentalists have hard time trying to prevent decoherence even with much smaller systems, so I cannot give a recipe to eliminate decoherence for cat-size objects. However, experimentalists keep making progress in this direction, showing what kind of measures should be taken to prevent...

You seem to agree that the claim of universal validity of unitary dynamics is at least main stream. If so, I don't have to accept phinds' categorical statements on impossibility of Schrödinger's cat. I keep repeating: maybe the cat can be both dead and alive, maybe not, but at this stage we just...

As for Baird, he also writes: "Careful analysis reveals that the Schrodinger Cat "experiment" would play out in the real world as follows: as soon as the radioactive atom interacts with the Geiger counter, it collapses from its non-decayed/decayed state into one definite state. The Geiger...

I don't know if the following is what you need: U. Delić et al., Science 10.1126/science.aba3993 (2020). Cooling of a levitated nanoparticle to the motional quantum ground state Abstract: "Quantum control of complex objects in the regime of large size and mass provides opportunities for...

I am not going to do such forum search. With all due respect, whatever is written in the forum is not peer-reviewed, unless there are appropriate citations. I am under no obligation to write only what other forum members agree with. According to the forum rules, I just cannot promote theories...

No, I did not click on the link in your signature, I clicked on the link to Dr. Baird's page. The page is at a university's site, not at a private site, as I thought, and I apologize for this mistake, but still it is not peer-reviewed, so still unreliable. Baird says: "Schrodinger constructed...

You provided a link to what looks like a private web-site and referred us, your readers, to PF threads. Those are not reliable sources. If you insist that a cat cannot be both dead and alive, apparently you don't believe that quantum mechanics is correct for macroscopic objects. Nobody performed...

Just a couple of relevant references. Sebens, C.T. Electron Charge Density: A Clue from Quantum Chemistry for Quantum Foundations. Foundations of Physics 2021,51:75, 1–39. Barut, A.O. Combining Relativity and Quantum Mechanics: Schrödinger’s Interpretation of ψ. Foundations of Physics 1988,18...

The following may be relevant: http://www.scholarpedia.org/article/Semiclassical_theory_of_helium_atom

I am not sure. There can be dynamic aspects as well, as an electron spends a finite time near the slit. Something about dispersion relation for the barrier material.

That is correct. Please see the reference in my post #30 in this thread.

I am trying to say that electrons passing through a slit at some distance from the edge of a slit are also affected by the slit screen (they interact with their image charges, which depend on the properties of the slit screen).

Could you provide references to your statement "The double-slit experiment is traditionally performed with a non-conducting screen"? For example, https://iopscience.iop.org/article/10.1088/1367-2630/15/3/033018 uses silicon nitride coated with gold. And anyway, even if the screen is made of a...

Journal of Applied Physics 100, 074322 (2006) (https://aip.scitation.org/doi/abs/10.1063/1.2357000?journalCode=jap) or accessible version https://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1060&context=mrsecfacpubs "In the course of our previous qualitative study an unexpected...

[1107.2138] Understanding quantum measurement from the solution of dynamical models (arxiv.org) (published in Physics Reports). " Strictly speaking, for finite values of the parameters of the model, the process that we have studied cannot be an ideal measurement in a mathematical sense...

So, if your design is not a secret, why don't you describe it and explain why you think it meets the requirements? So a week ago I was "Hypothesising that anything is possible", today I am a catastrophist?:-) Your arguments do not take into account any specifics of the structural design, so I...

In our article, we only consider a sea-level vacuum balloon, so no heating / lighter-than-air gas is needed in that case. This vacuum balloon is shown to meet the requirements of post #95. Does the design you have in mind meet the requirements? As I said, high altitudes are difficult for...

The requirements are: 1) the balloon is lighter than air, 2) it is strong enough to withstand atmospheric pressure, 3) it does not use a lighter-than-air gas or hot air. I don't think these are "my" requirements, these are natural requirements for vacuum balloons. If you disagree, please let me...

Do you have in mind some specific design matching your description? Was it shown to satisfy the requirements for a vacuum balloon?

Because that means that the volume of the solid must be very low to achieve buoyancy. That means that either the shells must be thin or the beams of the truss structure must be thin. This is problematic because of buckling. So it's not just strength to density ratio that matters, but also...

Yes, that is why some solution (say, heating during ascent to the design altitude or delivery using other aircraft) may be needed for intermediate altitudes, otherwise one would need to overengineer the vacuum balloon, and high altitudes are difficult for such balloons anyway. The problem with...

I gave a link to an article on semiclassics for helium in post #15 in this thread. It looks like Wyatt considers Bohm's trajectories, whereas semiclassics uses a sum over classical periodical trajectories.

To the best of my knowledge, it is impossible (but I cannot be sure that the people at Los Alamos don't have some trick up their sleeve). Other, better ordered light structures may be more promising than aerogels.

You suggested hydrogen, not me:-) If hydrogen is good enough for your application, you don't need a vacuum balloon. However, if you don't want a flammable gas on a permanent basis, or you want better altitude control, or hydrogen leak is a problem, a vacuum balloon may be an option.

Actually, this is the approach of people at Los Alamos (https://www.lanl.gov/science-innovation/science-highlights/2020/2020-01.php). I am skeptical though, as aerogels' strength and modulus decrease fast with decreasing density. Currently they use an aerogel with a density of 120 kg/m^3, which...

We discussed boron carbide ceramic in our article. It is very real, but it just happens to have incredible (but real) compression strength / elasticity modulus. It is used, for example, in bulletproof vests. In our article we considered a spherical sandwich shell made of currently available...

I don't dismiss challenging problems as trivial, I dismiss categorical statements when they are not supported by numbers. You told me: " You cannot deny or dismiss the fact that the vulnerable shell of a vacuum balloon is an inherently unstable exoskeleton." One can replace "vacuum balloon" in...

I respectfully disagree. I can and I do deny and dismiss such arguments and statements. Without any numbers, they are just hand-waving. You offered a colorful comparison of a vacuum balloon and a lifting-gas balloon, but you did not mention that the vacuum balloon uses a ceramic with incredible...

In general, this is a reasonable consideration, but there is some subtlety. The temperature at sea level is, say, 0 deg Celcius, but the temperature at 60000 feet is -70 deg Celcius. Thus, if a vacuum balloon has buoyancy and integrity at 60000 feet, it does not mean that it will have buoyancy...

Yes, it is. But I mentioned other "data points" previously: " I believe a prototype vacuum balloon will have significant scientific and cultural value and would be of interest for millions. You can find dozens discussions at various forums, where people ask if a vacuum balloon is feasible...

These considerations do not look very meaningful without calculations. Maybe you are right, maybe not. Anyway, vacuum balloons will have their strong and weak points, so they will probably find some applications/niches. I don't understand this. If you evacuate 6-balloon at sea level, it will...

Still, what I calculated is four orders of magnitude less than the atmospheric pressure. If you believe the factors you mention change the situation dramatically, I would like to see your calculation.

In that post I was not replying to you or to Stormer, but to Vanadium 50, so I did not have in mind high altitude balloons or substitutes for LEO satellites. However, let us compare zero buoyancy vacuum balloons for the altitudes of 0 feet (sea level) and 60000 feet (let us call them 0-balloon...

So 10 knot wind provides a pressure of 0.5 rho v^2=17 Pa, according to my calculation (I used air density rho=1.29 kg m^-3). This figure seems to agree with information at https://www.engineeringtoolbox.com/wind-load-d_1775.html . However a vacuum balloon withstands atmospheric pressure of about...

I don't feel kickstarter is the way to go right now, although I may be mistaken. Other people tried and failed to raise funds for a vacuum balloon at kickstarter. Of course, absolute vacuum is not needed. I think very rough vacuum (say, 1% of atmospheric density) would be enough. It will not...

Thank you for looking at our paper. I don't see why we should not have referenced our patent application. Yes, USPTO rejected the application as they believed that Armstrong's invention destroys novelty of our application. However, Armstrong did not even say that the walls of what looks like a...

I would say, it was in the next paragraph:-) So it was not obvious the first phrase was about economics. And I answered to his "market" paragraph separately. I have not heard about airships releasing helium for altitude control. I don't think it is done on a large scale. Well, different people...

We wrote an article (https://arxiv.org/abs/1903.05171) showing that a vacuum balloon can be made using currently available materials. The design was verified for strength and buckling using finite-element analysis. We also cite designs of vacuum balloons by others.

Vanadium 50 wrote: " Vacuum airships are a not-even-a-solution looking for a problem. " What did I not hear? He did not mention economics until later. I tend to read what people write, not what they think. So I mentioned some problems a vacuum aircraft could solve. What's wrong with that? And...

What is hypothetical about the problems that I mentioned? So yes, there are other ways to solve them, and no, there is no vacuum aircraft. I just insisted that there are indeed problems that vacuum aircraft could help solve.

I agree. That's what I said. But again, I don't feel I need to repeat Allahverdyan's analysis for every measurement instrument in existence.

Again, Allahverdyan et al. showed how unitary evolution can create perception of single outcome for a specific measurement instrument. I am not able to perform a similar 300-page-long analysis for Stern-Gerlach. That does not mean it cannot be done. I can assure you I am not trolling. I just...