Wednesday, April 10, 2024
does space have any natural coordinates?
How about the least age?
How do you stay in the same spot?
time is different everywhere
I guess at the start of the big bang, time was the same, that is zero, and the rate of change was the same.
That all changed immediately, and neither measure has ever been the same since.
Measuring time has its problems, because you cannot talk about a point in space. Really you can only talk about the track of the clock itself. And to do anything useful you have to have two clocks that do separate tracks through space time before meeting up again.
Now two identical clocks left in the same place at the same time , will stay the same of course. But if one was dropped off the earth in a 'stationary position' and wait for the earth to do a loop round the sun and then to jump back onto the earth, the times are going to be very different. But neither one is special. They are both orbiting the centre of the galaxy.
It is difficult to see how one does not get inconsistencies in this whole operation, and maybe that would be worth looking at to discover some better understanding of the nature of time.
Basically the question is how do you arrange how to meet up at the pub at lunch time.
you could arrange a line of specially chosen clocks in a line. And walk done the line with the clock stationary, or even going backwards in time.
Even more peculiar is that clocks attached to radio waves from the big bang would not even have started.
So if you look at the universe at time zero, ( that is those places with clocks at time zero) you would see everywhere that these photons eventually went in the future illuminated by these initial photons. This would include where they had been bent round future objects that did not exist at time zero.
This is all completely bonkers. Maybe the conclusion is that these clocks really don't exist or cannot conceptually travel. Or maybe that light cannot actually travel at the speed if light, and maybe these clocks always move forward just a little.
Talk about weird.
And presumably plenty of these photons are still out there in the background radiation, waiting to illuminate something.
Martin