Time Dilation Calculator
Calculate relativistic time dilation using t = t0 / sqrt(1 - v²/c²).
Dilated Time (observer)
2.294157 s
Dilated Time (observer) vs Proper Time (moving frame)
Fórmula
## Time Dilation Special relativity predicts that time passes more slowly for objects in relative motion. ### Formula **t = t_0 / sqrt(1 - v²/c²) = gamma * t_0** where t_0 is the proper time (measured in the moving frame) and gamma = 1/sqrt(1 - v²/c²) is the Lorentz factor.
Ejemplo Resuelto
1 second of proper time at 90% the speed of light.
- 01gamma = 1 / sqrt(1 - 0.9²)
- 02gamma = 1 / sqrt(1 - 0.81)
- 03gamma = 1 / sqrt(0.19)
- 04gamma = 1 / 0.4359 = 2.294
- 05t = 1 * 2.294 = 2.294 s (observed from outside)
Preguntas Frecuentes
Is time dilation real?
Absolutely. It has been confirmed by comparing atomic clocks on jets to ground clocks, by muon lifetime measurements, and by GPS satellite corrections.
What is the twin paradox?
If one twin travels at high speed and returns, they will have aged less than the stay-at-home twin. This is not a paradox but a real prediction confirmed by experiment.
Why does GPS need relativity corrections?
GPS satellites move fast (time dilation) and are in weaker gravity (gravitational time dilation). Without corrections, GPS would drift by about 10 km per day.
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