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No evidence is apparent here of particles/photons or of wave/ particle duality.
Originally posted by Mary Rose
Originally posted by Mary Rose
What technology did the Egyptians use to transport these blocks?
Hmmmm. Arb and BS have not weighed in on this.
Why not?
Originally posted by Mary Rose
reply to post by buddhasystem
So you believe our technology today could transport 200+ tons?
This video is of a 1200 ton generator that started out in Tokyo, being moved in South Carolina. That's nearly halfway around the world which means you could probably move it anywhere. So yes I'd call that a significant distance.
Originally posted by buddhasystem
Originally posted by Mary Rose
reply to post by buddhasystem
So you believe our technology today could transport 200+ tons?
200 ton moves were routinely done in the 19th century.
Our technology today can transport structures weighing at least 2,500 tons over significant distances, in one intact piece.
Started in Tokyo, barged over to Charleston, SC. 750 ft. long, 14 ft. wide, 2.4 million lbs....
Originally posted by Arbitrageur
reply to post by buddhasystem
That's true. The space shuttle weighed something over 100 tons
the virtual particles are themselves space
That is an explanation of one possible way a virtual particle might become "real".
the Casimir effect is no certain proof for vacuum energy since it can also be explained without this theory.[4]
Other predictions are harder to verify. Vacuum fluctuations are always created as particle/antiparticle pairs. The creation of these virtual particles near the event horizon of a black hole has been hypothesized by physicist Stephen Hawking to be a mechanism for the eventual "evaporation" of black holes. The net energy of the Universe remains zero so long as the particle pairs annihilate each other within Planck time. If one of the pair is pulled into the black hole before this, then the other particle becomes "real" and energy/mass is essentially radiated into space from the black hole.
I think the idea that we can observe it via the cosmological constant needs more evidence but it seems like a rational question to investigate further and until we confirm a correct answer, that's what I base my best guess on.
the vacuum energy is mathematically infinite without renormalization, which is based on the assumption that we can only measure energy in a relative sense, which is not true if we can observe it indirectly via the cosmological constant.
Originally posted by Arbitrageur
Regarding taking energy out of the vacuum, I believe experiments will eventually show we might be able to temporarily extract quantum amounts of energy before the vacuum will just take them right back
It's interesting you should mention that because I was thinking of experiments where we've "gotten something for nothing" on small scales, even without Maxwell's demon, like this:
Originally posted by buddhasystem
To me, the issue is similar to Maxwell's demon. It's a pretty deep subject.
So that's not just a thought experiment like Maxwell's demon, it's an actual experimental result, so it can happen on small enough scales even without the demon. It's actually not surprising at all and can be predicted statistically as an expected result at small scales and short time frames.
The team found that, on occasion, the water molecules interacted with the bead in such a way that energy was transferred from the liquid to the bead. These additional kicks used the random thermal motion of the water to do the work of moving the bead, in effect yielding something for nothing.
You say that, but it seems to me you're not following your own proclamations when you say this:
Originally posted by beebs
We could play all day long with semantic definitions of 'virtual' and 'particles'... or we could think critically about the concepts and the phenomena we are dealing with, and come to a logical explanation. Rather than applying our theoretical presuppositions onto the phenomenon, we should let the phenomenon stand on its own. We are supposed to be involved in the project of describing, not prescribing.
I don't think the top scientists in the world claim to be able to accurately answer the unsolved problems in physics related to vacuum energy, yet you claim how it can be "simply described"?
VDF and ZPE can be simply described as the interactions between all of the spherical quantum waves in the universe.
....We are not measuring 'particles' - we are measuring values and interpreting them as particles.
Who says we don't use them? That's exactly what this latest interpretation of the double slit experiment description uses; it refers to the "pilot wave theory" also known as the "Debroglie-Bohm theory":
Originally posted by beebs
I too would like to know how nature is, and not how you would like it to be.
Why does one interpretation automatically get a higher status than another, seemingly a priori?
Why do we use Born's solutions and interpretations of the wavefunction, and not Schrödinger's original interpretation of his equations?
Why don't we use Bohm's mechanics and interpretations?
That at least partially answers your question about why alternatives to the Copenhagen interpretation were found harder to work with but weren't able to distinguish themselves as being empirically different, so of course it seems logical to me that without an empirical way to distinguish them, scientists would prefer not making their lives unnecessarily more difficult by choosing a theory which is harder to work with for no good reason. And it also mentions the "black box" view of making good predictions. But nowhere does that really imply that people are married to the Copenhagen interpretation; on the contrary that implies if another interpretation actually had empirical evidence it was more correct, that would be the criterion scientists would be looking for to prefer it.
The Copenhagen interpretation was extremely unsatisfying to several prominent physicists of the day (Einstein was the most famous dissenter, of course), and indeed to many working in the field now. Over the years, other scientists have proposed many alternative interpretations, some of which are more viable than others; many fail the Occam’s razor test by providing no empirical difference from the Copenhagen interpretation, yet are harder to work with....
Many (perhaps even most) physicists treat the whole theory as a black box, something that provides very good predictions, but that will lead to madness if you try to figure out why it works the way it does.
Did you catch that? Not only are they saying this might support the pilot wave theory, but the pilot wave theory itself is a particle theory which explains how the particle can move in a fashion to appear to have wave-like behavior.
Enter the experiment by Kocsis et al.: by reducing the resolution of the measurements, the experimenters increased the uncertainty in the momentum, allowing a better chance at determining the trajectories of an ensemble of photons. The Heisenberg uncertainty principle still stands, in other words, and is an essential part of this experiment (whatever some headlines may say).
By repeating the experiment for a large number of individual photons and moving the apparatus to measure polarization at various points along the trajectories, the researchers were able to reconstruct the paths not of the individual photons but of the complete ensemble of all photons – yet due to the statistical nature of quantum mechanics, information about the individual photons within the system can still be inferred.
One possible interpretation of the experiment is in line with the pilot wave model, formulated by Louis de Broglie with later additions by David Bohm. In this view, the wave function describes a statistical distribution that says what physical properties the point-like particle is likely to have – while the particles themselves may follow precise trajectories, even if those are very difficult to track. This certainly is consistent with what we see in detectors, although one might ask whether the pilot waves themselves can ever be directly observed – and if they can’t, whether they can be said to be "real".
So do I.
Has the Copenhagen interpretation fallen? Has the pilot wave interpretation been vindicated? The cautious scientific answer must be "not yet". After all, there is nothing in this experiment that isn’t completely compatible with the mathematical predictions of quantum mechanics, so any valid interpretation – including the Copenhagen interpretation – will describe its results.
However, measurements such as this make it harder to say smugly that photons don’t follow any particular trajectory and that it’s unreasonable to expect them to. I for one look forward to more experiments along these lines.
Originally posted by buddhasystem
Originally posted by Mary Rose
Originally posted by Mary Rose
What technology did the Egyptians use to transport these blocks?
Hmmmm. Arb and BS have not weighed in on this.
Why not?
a) Because I didn't volunteer to tutor you in Internet and your local library usage.
b) Because Rodin's donut has zelch, zero, nada to do with Egypt, pyramids or common sense
c) Because I've visited Egypt and saw at least one example of how they did it in Luxor, where the ancient Egyptians left behind a huge mound of clay they used to hoist massive blocks up, to build a huge wall at Karnak, and there are other techniques that can supplement that.
Originally posted by beebs
reply to post by Arbitrageur
I too would like to know how nature is, and not how you would like it to be.
Why do we have to adhere to contradictory particle interpretations to wave behavior - which results in the kind of exotic science that you yourself wish to avoid?
To me, it seems illogical and totally arbitrary to name our (apparently unproven) speculations as 'virtual particles'.
Rather than applying our theoretical presuppositions onto the phenomenon, we should let the phenomenon stand on its own. We are supposed to be involved in the project of describing, not prescribing.
VDF and ZPE can be simply described as the interactions between all of the spherical quantum waves in the universe.