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Actually that is EXACTLY for this thread.
From Phys.org. Physicists reverse time using quantum computer. https://phys.org/news/2019-03-physicists-reverse-quantum.html
Quote from: mxplxxx on 29/03/2019 05:02:23Given that energy is derived Planck's Quantum of Action which is a constant, it is possible that time is the only variable in the universe.I can think of a counterexample, so this isn't true. The air pressure on this mountain changes with altitude. That's a variable (altitude) in the universe that isn't time.
Given that energy is derived Planck's Quantum of Action which is a constant, it is possible that time is the only variable in the universe.
Quote from: mxplxxx on 29/03/2019 12:13:10Air pressure, related to energy which is determined by time E=h/t.Wrong formula. E=h/t sounds like a formula for pressure in a leaky tire. The pressure doesn't change over time. It will still be thinner at the summit tomorrow, even if the weather does make some fluctuations.The formula isP=Pb • exp [ -g0 M (h-hb)} / (R* Tb)]where:Pb = static pressure (Pa)Tb = temperature (K)h = height above sea level (m)hb = height at bottom of layer bR* = universal gas constant: 8.3144598 J/mol/Kg0 = gravitational acceleration: 9.80665 m/s2M = molar mass of Earth's air: 0.0289644 kg/molThat's from wiki barometric formula, and it is not a function of time.
Air pressure, related to energy which is determined by time E=h/t.
I think there exists perceived time, related to awareness
There are some points I need to clarify, in my own mind….
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This second path leads, surely, to the view that change is the fundamental property of the Universe, and that time emerges from our need to understand the changing Universe around us. Here we hit a stumbling block. What do we mean by “time emerges”? First there was no time, then time manifested? If there were no time, nothing could happen, so time could not emerge.
There is no time without distance. This was the case at the "time" of the big bang.
This process is an illusion which our minds create in order to make sense of our Universe.
The new universe can be created in a top-down fashion much like a computer program creating a database. i.e Universe object created first, then galaxy cluster objects then galaxy objects and so on.
Einstein threw a spanner in the works when he brought to general notice that time passes at different rates depending on an observer’s relative motion, or the local strength of the gravitational field. He produced some clever maths to show how this worked. When he said: “Time is nothing but a stubbornly persistent illusion”, one might be forgiven for thinking that time was on its way out. However, illusion or not, it continues to be stubbornly persistent.
My understanding is that, in science, theories are not proven correct. The best one can do is keep trying to prove them wrong. “After a century of trying”, success is singularly lacking, as far as SR and GR are concerned. Einstein made mistakes. Hans Ohanian filled a book with them. Don’t read it if you have a glowing opinion of Einstein as a person, which you want to preserve.