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If one considers time and gravity to be secondary, not primary, effect not cause then it may be a bit imprecise Just wonder how many physicists actually play billiards! Using real world Newtonian type physics objects to describe an analogy to quantum effects is always going to be fraught with failure and confusion. The sensationalist title 'reverse time' works in grabbing our attention. However its very misleading especially given that we don't really know what time is or if it actually exists - Just a human observation of something else?
The one thing for sure is that this is not a 'reversal of time' in any human meaning of the phrase. Mark Thomas, Nice ad-hominem attack! Very persuasive, I am sure, and fair-minded too. But what about the substance of my comment, that the article greatly exaggerated the significance of their findings. Originated from Russia, true, but published in Scientific Reports, a supposedly reputable peer-reviewed journal, and you read it here.
Why publish such silly exaggerations!?
Does it help? The endless over-hyped, sensationalized 'science' stories weary me. And many readers are undiscerning enough to actually conclude that time was reversed and entropy violated because of reading an article like this one. Perhaps you as well. You seem the credulous sort.
And I don't summarily dismiss scientific findings that originate from Russia, as you do. I let them stand on their own merits.
This publication centers on the extraordinary ideas in and concepts of physics of th CarI Friedrich von Weizs?cker. At the time of his 90 birthday on June giuliettasprint.konfer.eu: Time, Quantum and Information (): Lutz Castell, Otfried Ischebeck: Books.
Truth can come from any quarter, but these scientists did not reverse time; they did not reverse entropy, despite the headlines to the contrary. This can be a useful reset technology for quantum computers, but time reversal it isn't. In a very-much forward-time manner the researchers appear to be setting up a boundary condition in analogy with the external compressive pressure in their thought experiment on the free space electron spread--which would involve global entropy increase greater than or equal to zero per the second law of thermodynamics.
Loosely speaking, "refrigeration" is not time reversal--though maybe there is something to say on that. Perhaps we should not be talking of forward and reverse time globally but rather as a variable mapped on to spacetime, and a global averaging in pixelating larger and larger regions on that map in panning out. However, at some large enough pan level certainly in our epoch , those pixels better all prove forward-time in direction.
They seem to be exploring the interface between few body systems and many body systems as it relates to the 2nd law of thermodynamics. I assume that is what is referred to when the article notes that the "nature of that law has not been explained in full detail", because the likelihood discussion on states in the article is the deeper statistical physics explanation. AFAIK there are quantum experiments that arguably revert entanglement and decoherence, as well as the time order "time travel" reversion that relativity allow though googling them would be a chore.
Time and gravity are observed. Don't mind these crackpots, when they don't like model predictions they are usually of the US political anti-climate science bent and IIRC there is an Anonymous here that fits the bill. The way to find the truth is to understand and conduct the experiment. We need to find a difference between opinion and reality in a well conducted test. By testing and observation you might find a detail missed in a popular theory. In the case of well tested theory you find that they are true to the limits of their instruments.
If they are right, they will pass by the negative response and use their new found knowledge. It is intresting that the cycling states in a quantum system resembles a time crystal. One might imagine that time in such an experiment is isolated from our own time except for the point of interaction. The direction and state of time would not violate the physical laws of our own time because of the qbits non locality. It is like the quantum system is in a state like entanglement over kilometers. It is not like the components of a slide rule. The components of the computer could be replaced with any quantum object like single particles or a condensate.
When an electron goes to it's Past If an electron goes back to it's past goes back 54 hours hence into it's past where does everyone thinks it goes well firstly, where was it 54 hours ago it was where the Earth was 54 hours ago in its orbit round the Sun if everyone wants to know where this electron goes to it goes to the spatial position in space where the Earth was 54 hours ago in its orbit so, one and all if your peer out of Earth's atmosphere and look into space where the Earth was 54 hours ago you will see it there Twinkling in orbit 54 hours from Earth Well, where did you think it was, in the Past.
I think this theorem is insufficiently understood. It is very firmly based and very strong supporting evidence for it has been produced in the lab, more than a decade ago. It's even referred to in the paper we're discussing here, though only in passing. Before all is said and done, I expect the FT will turn out to be one of the most important links between classical and quantum behavior. Consider this carefully: the FT says entropy increase and decrease are equal at the quantum level, and that entropy increase is dominant at the classical level.
This is an astonishing statement, considering our understanding of classical entropy and of quantum mechanics. Consider that all quantum mechanics must reproduce classical mechanics and the disconnect becomes clear. There's still something we don't yet quite get. Each one's results are noted, analyzed, compared with theoretical predictions, and published.
And time is not something that has a direction or state. Matter has a direction and state in time, just as it has a direction and state in space. When an electron goes to it's Past Extraneous apostrophe.
Lern to Inglish. Very good. Very subtle. Very succinct. Very funny.
Thanks for the unexpected quiet chuckle on this here rainy day, mate. Space, OTOH is a "thing" that can be reckoned with in many ways, such as moving through it.
I find it amazing and laughable how humans cling to such preconceived notions - and that is all that time is - a notion. Just another troll. Can't do math, can't do physics, doesn't even understand that time symmetry is the complement under Nother's Theorem of conservation of energy. Gravity and its effects on Mass are observable. What is time made of? I have been asking this for many days, and still haven't gotten a proper answer. Theorems combining time will obviously be left for the new theorists that come along to remediate the errors of those early theorists.
The dead are better off left alone, and hopefully, the living will find out soon enough that they had been led astray by Minkowski's Spacetime silly nonsense, for which Einstein got the blame. Yes, DS, but I've always held to the idea that an isolated system evolves into a state of harmony. The cube of ice in its place melts to the ambient temperature of its environment. Homogeneity is not chaos. All I see happening is that the event is being scaled differently.
The "chaos" lies in the inability of the observer to comprehend what is going on. This "disorder" paradigm violates the Heisenberg principle, by referencing a slice in time wherein all parameters can be observed and confirmed, when in fact, there is only a continuum of order, as can be proved be isolating that slice of time with no reference to tense. These guys should work on a practical application of their "work", the re-integration of disintegrating particles. Imagine, unradioactivating radioactive materials. When an electron goes to it's Past If an electron goes back to it's past goes back 54 hours hence into it's past where does everyone thinks it goes well firstly, where was it 54 hours ago it was where the Earth was 54 hours ago in its orbit round the Sun if everyone wants to know where this electron goes to it goes to the spatial position in space where the Earth was 54 hours ago in its orbit so, one and all if you peer out of Earth's atmosphere and look into space where the Earth was 54 hours ago you will see it there Twinkling in orbit 54 hours from Earth Well, where did you think it was, in the Past says granville That's true.
It cannot be any other way. That means that cars wouldn't have to have their gearshift in reverse to go backward. If you don't know the relation between the symmetry of physics over time and the conservation of energy, you aren't even worth reading. Symmetry of physics over time is, if I do this experiment today, or I do it tomorrow, I get the same result. Now explain why that's related to conservation of energy. This could be quite useful. Taking it to the next level in combination with E8 quasi crystal math approaches.
Perhaps they could even eliminate the radioactive waters at Fukushima by reversing the Events that led to the tsunami destroying the nuclear power plant. There are a number of things that I can think of that would be of benefit to the world and humanity if the concept of time could actually be reversed.