RE: The universe appears "old", but it is still less than 10,000 years old
February 20, 2014 at 7:44 am
(This post was last modified: February 20, 2014 at 8:04 am by Alex K.)
(February 20, 2014 at 7:33 am)Zen Badger Wrote:Well what do they mean?(February 20, 2014 at 7:20 am)Alex K Wrote: I honestly don't do this to annoy you
But I'm going to be anal retentive now - It's really important to clarify concepts here, or our discussion will be meaningless.
So I don't know what you mean by instantaneous, please elaborate.
It's not what I mean by instantaneous, it's what the cretinists mean.
Quote:And as far as I can tell they are claiming that light travelling towards earth does so at infinite velocity.
I know, and higher up in this thread I elaborated upon how one has to change conventions away from the usual Einsteinian synchronization prescription of distant clocks in order for this statement to be true, and how measuring travel time from A to B relies on specifying which prescription you use to synchronize clocks at different places. The Einsteinian one surely is the simplest one (the Lorentz transformations assume a particularly simple position and direction independent form) and also the one closest to the classical picture of rigid universal time, but it is not the only one.