https://scitechdaily.com/see-worlds...at space-time,below minus 250 degrees Celsius. Always with the super cold, like @Montegriffo is to glass, time travel is to super cold temperatures; from tachyons to time crystals. How cold is cryogenics and how cold is -250 Degrees Celsius?
I know this was supposed to be a troll thread, but this video gave me some inspiration, in the first two minutes (1:10 to 1:16), that the speed of light might be the reason that there is an aspect of locality in physics. I don't really know, but I remember the story of how quantum chips, operating in a superposition of state (because the internal parts were assembled without an observer witnessing the construction of the internal parts) if the quantum chip's construction was recorded on video, the moment that the video is watched the quantum machine stops working because an observer locked in its state and the superposition vanished. So, why does the quantum chip work until the video is watched? Instead of the effect going backward in time and preventing the quantum chip from ever working in the first place? Could it be that the effect of observing the internals of the quantum state is limited to the speed of light and that speed limit causes the physics phenomena of Locality to manifest?
Cold temperatures have nothing to do with time travel but everything to do with cryogenics. That was easy.
There are a more than a few articles about them on science webs sites. As a layman as I understand it a normal crystal has an atomic structure that is basically identical throughout its structure i.e. it repeats over and over again throughout the entire crystal. A time crystal has an atomic structure that is variable over its structure but which will repeat itself over time cycling back to the same structure at intervals. (Cue sound of material physicists all over the world slapping their foreheads and shaking their heads.) Sadly Dr Who is not involved.
One example of a "time crystal" is an atom. The atom is in its lowest possible energy state but there is still movement inside it. You can't take this energy away. In fact it would take energy to stop the movement.
Heat is the movement of subatomic particles. Cold is the lack of movement of subatomic particles. The Second (Second - Wikipedia) is a unit of time, based on the emission of radiation from a Caesium-133 atom. Both time and heat are the movements of subatomic particles. To stop time and heat one must stop the subatomic particles by making them super cold. The closer to physics' absolute zero one goes, the slower time goes and the movement of subatomic particles slows. Coming to a stop at absolute zero. To go back in time one must reverse that action and go beyond the limit of absolute zero and actually turn the release of radiation, of the Caesium-133 atom, into the absorption of waves of the Caesium-133 atom. I have no idea how to do that!
That emission is only used by us to MEASURE time. It's not the flow of time itself (except for the cesium radiation ITSELF only, and nothing else outside of it). Heat, yes. Time, no. It's false to equate time and heat like this. They are nothing alike. Heat to an outside observer is the collective movement of particles in a system. There is no such thing as hot/cold to an individual particle. Time flows differently for each individual particle based on its speed. Wrong. To stop time you have to travel at the speed of light. You're right about heat, but not time. Wrong. This is true for heat, but not time. Nope. To go 'back in time' an object would have to somehow travel faster than the speed of light. This can only be conceived in hypothetical math equations/graphs and by inventing things like 'antimatter'.
