time dilation

• time dilatation (rare)

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time dilation

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time dilation (countable and uncountable, plural time dilations)

1. (physics) The slowing of the passage of time experienced by objects in motion relative to an observer; measurable only at relativistic speeds.
2. (psychology) The perceived change in the speed of time experienced due to psychological stress, hormones, or drugs; the rate of time perception.

• kappa effect
• Lorentz factor
• slowing-down time
• special relativity

• delimitation