Titre YouTube : How Does GPS Know Exactly Where You Are?

How does your phone know exactly where you are? The answer involves satellites orbiting Earth, incredibly precise atomic clocks, the speed of light, and even Einstein's theory of relativity! In this episode of First Principles TV, discover how GPS really works, why your phone usually needs signals from at least four satellites, and how tiny timing errors can affect your location. You'll discover: Why GPS satellites don't need to know your location How GPS calculates distance using time Why four satellites are usually needed How atomic clocks make navigation possible Why Einstein's relativity matters to GPS Why your location sometimes jumps around in cities Subscribe to First Principles TV for fascinating science and technology explained from first principles. #GPS #ScienceExplained #Einstein #Technology #FirstPrinciplesTV