Marcel Luttgens wrote:
Bjoern Feuerbacher wrote in message ...

Marcel Luttgens wrote:

SR time dilation on remote objects ?


A remark to all GRists:

Instead of quibbling about formulae incorporating the "assumed"
space expansion, (pseudo-)cosmologists should better give their opinion
about

The "Triplets" thought experiment (Adapted from the "Twin paradox")

Why? It is irrelevant for the cosmological time dilation.


_________________________________

"Terence sits at home on Earth. Galaxy (yes, it's her name)
flies off in a space ship at a velocity v/2. Simultaneously,
Terra (also a name) flies off in the opposite direction at -v/2.
After a while, Terra, who considers that Galaxy flies away
from her at a velocity v,

Why should Terra consider that? Does she not know how to
add velocities in SR?


claims that Galaxy is now younger
than her, exactly like GRists claim that time goes slower on
SN because of space expansion.

That is in no way "exactly like".


According to Terence, both Terra and the GRists are wrong,

There *is* no "right" or "wrong" here. Who is younger depends
on the frame of reference. There is no "absolute time".


because Terra's clock and Galaxy's clock tick at the same
rate."

Right. And still irrelevant for cosmology.



Till now, none of them dared to comment.
They should at least try to demonstrate that Terence is wrong.

No. In his frame of reference, he is perfectly right.

In their frames of referenes, both Galaxy and Terra are also
perfectly right to claim that the other one is younger.

And this is still irrelevant for cosmology.


As long as they play escapism, one has to conclude that
they are unsure of the validity of their paradigms.
In the meantime, further discussion is a mere waste of time.

Discussion with someone who keeps confusing SR time dilation with
GR time dilation, despite several corrections, could also be
considered as a waste of time.


Bye,
Bjoern