And so the cascade of nonsense continues from MD and now also from Magnus who has already stated, basically, that he won’t learn about special relativity because he doesn’t think it’s necessary for him to learn postulates one and two of SR that form the basis of the whole thing! It’s like saying he wants to learn math but has no use for arithmetic! Incredible!
And then he blames me for not explaining what he refuses to learn. Double incredible!
And yet, dollars to doughnuts, both MD and Magnus own a cellphone with a GPS tracking system.
And do you know what? That GPS system is delicately engineered to work in accord with BOTH the special theory of relativity AND the general theory of relativity! If those theories were wrong, the GPS tracking devices WOULD NOT WORK! But they DO work, and they work BECAUSE they are adapted to both SR and GR!
Their ignorance of their own technology that they take for granted is laughable. And so I do laugh! —>
The GPS connects to satellites with atomic clocks orbiting the earth. In order to function properly, they must take into account relativistic time dilation — the fact that the satellite clocks tick slower relative to earth clocks.
But wait! There’s more, which this thread had not even addressed yet! The “more” is GENERAL relativity. (Until now we have been “discussing,” if that is how you want to put it, SPECIAL relativity only — i.e. relativity in flat, or non-Minkowski, spacetime, excluding GRAVITY.)
As GENERAL relativity shows, clocks also tick slower in GRAVITY WELLS.
And lo and behold, the time dilation of your cellphone clock in the gravity well of the ground state of the earth more than cancels out the time dilation factor of the satellite moving relative to the earth, such that the satellite clock is actually ticking FASTER than ground clocks by 38 microseconds per day!
For your cellphone GPS to work, it must be delicately engineered to take into account BOTH time dilation on a satellite moving relative to the earth, AND time dilation caused by the gravity well of the earth itself. All of this is done to make sure your GPS tracking device on your cellphone works — just so you can efficiently meet up with a friend to rant and rave at him that relativity theory is false and Einstein is an idiot!