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From: Volney <volney@invalid.invalid>
Newsgroups: sci.physics.relativity
Subject: Re: Relativity is a pseudoscience II. The Hafele-Keating HOAX,
Date: Tue, 17 Sep 2024 01:34:16 -0400
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On 9/11/2024 7:54 PM, rhertz wrote:
> I want to tell a story of two adventurous "scientists" that, allegedly,
> proved SR and GR by using borrowed cesium atomic clocks, which they
> carried along with them while traveling around the globe TWICE, using
> commercial flights.
> 
> You can read the original publication here (1971):
> http://www.personal.psu.edu/rq9/HOW/Atomic_Clocks_Predictions.pdf
> 
Once again, Richard shows the typical crank idea that a "breakthrough" 
paper is the one and only proof of something. The truth is that 
breakthrough papers are often on the bleeding edge of some technology, 
and the possible errors from new technology can reduce confidence in the 
whole thing. However, time and science marches on from 1971, and the 
combined effects of SR and GR have been proven repeatedly. The most 
obvious example is the GPS satellite system, which simply wouldn't work 
if combined SR/GR corrections weren't applied. In other words, H-K is an 
old experiment, we have much better data now, move on.

The most blatant example of a "breakthrough" experiment with poor 
resolution that cranks obsess over is the 1919 eclipse experiment. More 
than 100 years old! There have been many eclipses since then with many 
better repetitions, and since we've had satellites above the atmosphere, 
eclipses aren't even necessary. A satellite just needs to block the disk 
of the sun when observing the sky, and even that's not needed. The 
effects of light deflection by the sun's gravity can be measured at 90 
degrees from the sun (light at 1 AU on closest approach, so very small 
deflection) and this was routinely done by exoplanet hunting missions 
like Kepler.

p.s. 1911, Richard? How about Einstein's later papers where many things 
were corrected?