**Category:**

Research Papers

**Sub-Category:**

Relativity Theory

**Date Published:**

August 9, 2021

**Keywords:**

relativistic "time dilation", light speed, changes in frequencies

**Abstract:**

Professor Neil Ashby: “The GPS system, in fact, is the embodiment of Einstein's views on space and time and cannot function properly without taking into account fundamental relativistic principles .... The basic principle by which GPS navigation works is - this is a simple application of the second postulate of the special theory of relativity, namely, the constancy of the speed of light ”

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