Re: Argument with ChatGPT about that Pound-Rebka experiment was A FRAUD.

rhertz <hertz778@gmail.com> wrote:

On Sat, 11 Jan 2025 13:07:05 +0000, ProkaryoticCaspaseHomolog wrote:
 
<snip my old post>
 

At the time Pound and Rebka conducted their experiment, it was not yet
understood that gravitational time dilation is a feature of EVERY
theory of gravitation that respects the equivalence principle. This
includes Newtonian gravitation.
>
Although you reject GR, gravitational redshift/blueshift is at this
time an extremely well-documented phenomenon. For example, many years
of accumulated data have proven that standard clocks in Boulder, CO
tick at a different rate than the USNO clocks.
>
Do you reject the Pound-Rebka through Pound-Snider series of
experiments as verifying a fundamental prediction of ***Newtonian***
gravitation? Do you believe that Gravity Probe A is a fraud? Do you
believe that the people who maintain UTC as a weighted average of
hundreds of standards clocks around the world are lying when they
apply corrections for gravitational time dilation to the clock
readings, when these corrections can be understood as a consequence
of ***Newtonian*** gravitation?

 
 
People working here, in Germany, want to correct TAI/UTC worldwide,
depending on HOW MUCH a given atomic clock is raised from the geoid
(even 1 meter).
 
 
https://www.ptb.de/cms/en/ptb/fachabteilungen/abt4/fb-44/ag-441/realisation-of

-legal-time-in-germany/the-time-scales-tai-and-eal.html

Huh? What do you mean: 'want to correct'?
TAI has been computed, -taking gravitational frequency shift into
account-, for about 50 years by now.
That's why TAI is defined: -on the rotating geoid-,
and -at mean sea level-.
And of course legal time in Germany is based on TAI,
what else could it possibly be based on?

The only thing that has changed is the increase of accuracy,
to the point that nowadays altitudes with respect to the geoid
can be measured directly from the rate shifts of clocks.
(in optimal cases to better than a centimeter)

Jan

--

QUOTE:
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AI and the gravitational time dilatation
 
When timescale information is transferred from one reference frame to
another, the transformation laws of the General Relativity must be taken
into account. TAI is defined in a geocentric reference system. Its scale
unit is the SI second as realized at the mean sea level of the rotating
earth. The corresponding gravitational equipotential surface is also
known as the geoid.w
 
Due to the relativistic time dilatation caused by the earth's
gravitational potential, the SI second could only be realized by atomic
clocks at sea level if no corrections were applied. In order to
compensate for the gravitational time dilatation, the rates of atomic
clocks located at an altitude h above sea level are corrected by a
relative amount of -1.09 X 10^-16 (h/m).
 
The PTB clocks for example are located at heights of h = 78 until 79 m
so that the relative rate correction is about -8.6.10-15. This takes
into account that the atomic second intervals realized by the PTB clocks
are shorter by 8.6.10-15 than the SI second produced by a cesium clock
located on the geoid.
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(all correct)