Why Special relativity cant be applied to GPS sattelites

 It is claimed by many scientists that GPS sattelites prove special relativity and general relativity correct because unless it was corrected for SR and GR time dilation it wont have the accuracy that it has. 


But special relativity is a special case of general relativity, and only applies to non accelerating objects in the absence of gravitational fields.

Special relativity describes how the universe works for objects that are not accelerating, called inertial reference frames. However, it doesn't incorporate gravity.


https://www.energy.gov/science/doe-explainsrelativity




In the General Theory, Einstein concerned himself non-inertial frames, in other words motion which involves acceleration. One example is uniform circular motion, where the tangential speed v of an object (in a circle of radius R) is constant but its direction of this velocity is continually changing.

https://web.pdx.edu/~egertonr/ph311-12/relativ.htm


 You simply cannot apply special relativity in this situation where the GPS satellite is in a gravitational field and has a circular motion and centripetal acceleration. You can only apply general relativity.

Special relativity applies only to unaccelerated motion, but general relativity applies to accelerated motion.


Furthermore, if you apply both SR and GR you get time dilation from the first (from higher speed) and a time contraction from the latter (from weaker gravity). Which leads to a paradox, of time dilating and contracting at the same time (or at the same point in 'spacetime').


''GPS devices work by calculating a position based on communication with at least three satellites in distant Earth orbits. Those satellites have to keep track of incredibly precise time in order to pinpoint a location on the planet, so they work based on atomic clocks. But because those atomic clocks are on board satellites that are constantly whizzing through space at 8,700 mph (14,000 km/h), special relativity means that they tick an extra 7 microseconds, or 7 millionths of a second, each day, according to American Physical Society publication Physics Central. In order to maintain pace with Earth clocks, atomic clocks on GPS satellites need to subtract 7 microseconds each day.

With additional effects from general relativity (Einstein's follow-up to special relativity that incorporates gravity), clocks closer to the center of a large gravitational mass like Earth tick more slowly than those farther away. That effect adds microseconds to each day on a GPS atomic clock, so in the end engineers subtract 7 microseconds and add 45 more back on. GPS clocks don't tick over to the next day until they have run a total of 38 microseconds longer than comparable clocks on Earth.''


Another fact that completelly debunks their claim is that GPS inventor Ron Hatch claims that GPS proves relativity wrong, 

and that Edward Dowdye from NASA as well as I have proved that general relativity is wrong. Special relativity, being a special case of GR, can only be a special case of wrong.


I would argue that the frequency errors of the GPS satellite are caused by other factors such as temperature, which even NASA admits it affects the atomic clocks. 

In any atomic clock, the atoms are contained in a vacuum chamber, and in some of those clocks, atoms interact with the vacuum chamber walls. Environmental changes such as temperature will then cause similar changes in the atoms and lead to frequency errors.

https://www.nasa.gov/missions/tech-demonstration/deep-space-atomic-clock/what-is-an-atomic-clock/

So the reason why time flows faster in space, and time contracts as atomic clocks tick faster, is because the operating temperature is like -200 degrees Celsius. And we all know that computer chips run faster and smoother the cooler they are, and run like crap when they overheat, as their operating frequencies are decreased.

Another factor which would cause desyncronisation is refraction of the GPS radio signal inside the earths atmosphere, which slows it down and causes a time delay from refraction, and not from gravitation. So the correction which they claim is from gravitational time dilation/time delay, is actually from the refraction delay.



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