Time runs slower closer to Earth's surface. In 2010, NIST physicists confirmed time dilation using atomic clocks separated by just 33 cm—the higher clock ticked measurably faster.

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How did physicists confirm time dilation is real? — ScienceCards

Time runs slower closer to Earth's surface. In 2010, NIST physicists confirmed time dilation using atomic clocks separated by just 33 cm—the higher clock…

ScienceCards