Please know the true definition of a word before you think it it is true....

[MikeS80]

Originally Posted by JustASimpleGuy

The satellites are concrete enough, even the atomic clocks they carry. However the calculations made to keep insanely accurate time are based on both Special and General Relativity, and that's almost as abstract as it gets. At its heart GPS is an exquisite exercise in timekeeping.

http://www.physics.org/article-questions.asp?id=55

General Relativity predicts that time will appear to run slower under stronger gravitational pull – the clocks on board the satellites will therefore seem to run faster than a clock on Earth.

Furthermore, Special Relativity predicts that because the satellites’ clocks are moving relative to a clock on Earth, they will appear to run slower

What? You are trying to make pigs fly, when they do not fly. Relativity is the dependence of various physical phenomena on relative motion of the observer and the observed objects, especially regarding the nature and behavior of light, space, time, and gravity. Special relativity applies to all physical phenomena in the absence of gravity. Time is a mental concept/abstract. Sure we see the sunset and sunrise, but we are the ones that call it time.

[noura]

Fair enough. It looks like I found a different ambiguity then