Atomic Clocks at Different Elevations: Experiments placing atomic clocks at varying heights confirm general relativity: time runs faster at higher elevations due to weaker gravity. Even a one-foot difference results in measurable time dilation. NIST demonstrated this with clocks accurate to one second in billions of years. This gravitational time warping means your head ages slightly faster than your feet. While minuscule, it proves spacetime is curved by mass. For time travel, it suggests extreme gravity (like near black holes) could drastically slow time, allowing distant future leaps. These precise measurements validate that gravity shapes time, a cornerstone for any future gravitational time manipulation theories.
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