“Both theories of Einstein are used in correcting the timing signals used in the 24-satellite GPS today, which shows their usefulness and correctness.”
It’s about time dilation, both time dilation of special and general relativity. In the case of special relativity- time delay of light-it’s clear that light can be bent by layer of atmosphere. Thus, speed of light is not constant. What can special relativity do to GPS? Nothing. Signals from GPS are not sent back from the receiver on earth to the GPS.
University of London Professor Herbert Dingle showed why Special Relativity will always conflict with logic, no matter when we first learn it.
In the case of general relativity, we know and no doubt: general relativity is not valid. We know that they did not hesitate to say: “One century after its formulation, Einstein’s general relativity has made remarkable predictions and turned out to be compatible with all experimental tests.”; or said that “special and general theory of relativity are incredibly well tested and very accurate theories.” But, actually, these statement is nonsense.
In fact, for more than 90 years statement of Nobel Committe in the year 1921 is still valid:”Without taking into account the value that will be accorded your relativity and gravitation theories after these are confirmed in the future”. What can general relativity do to GPS? Nothing.
In the 1990’s, Van Flandern worked as a special consultant to the Global Positioning System (GPS), a set of satellites whose atomic clocks allow ground observers to determine their position to within about a foot.
It may surprise you, but the GPS system doesn’t actually use Einstein’s field equations.
About big bang cosmology, it’s very interesting fiction story the expanding Universe without any brakes.
