Time dilation

Clocks run slower in stronger gravitational fields

Gravitational time dilation occurs because time passes differently depending on the strength of the gravitational field. This phenomenon is predicted by the theory of general relativity and has been confirmed through experimental evidence. It explains why clocks closer to massive objects, like Earth, tick slower compared to those further away.

Example

GPS satellites experience weaker gravity compared to clocks on the Earth's surface, causing their clocks to run faster. To maintain accuracy, the satellite clocks are adjusted to account for this difference.

Understanding gravitational time dilation is crucial for the precise operation of satellite navigation systems like GPS. Without accounting for these differences, the accuracy of location-based services would be significantly compromised.

Related concepts

Special relativity

Albert Einstein's special relativity paper introduced time dilation

Symmetry (physics)

Symmetry leads to energy conservation

Mass–energy equivalence

E=mc²

Schwarzschild metric

Schwarzschild radius at r=2GM/c² marks the event horizon

Hierarchy problem

Weak force vs. gravity: 1024 times stronger

Arrow of time

Arthur Eddington coined the term "arrow of time" in 1927

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