time dilation

Measured time difference as explained by relativity theory

EntityQ185918

Also known as spacetime dilation · space-time dilation

Subclass of: physical phenomenon

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

Time dilation is the difference in elapsed time as measured by two clocks, either because of a relative velocity, a consequence of special relativity, or a difference in gravitational potential between their locations due to gravitational time dilation. When unspecified, "time dilation" usually refers to the effect due to velocity. The dilation compares co-moving clock readings between events measured in different inertial frames and is not observed by visual comparison of clocks across moving frames.

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All data

16 statements · 31% with external sources · numbers in brackets are citations

Facet of: time
Named after: dilation

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13 identifiers linking time dilation across the web's reference databases

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statements

31%

externally sourced

Source last edited May 24, 2026. AIDb refreshes this page daily.

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AIDb. (2026). time dilation (Q185918). Retrieved from https://aidb.si/e/time-dilation-Q185918