Time Dilation

RELATIVISTIC PHYSICS

As a vessel approaches the speed of light, time aboard it slows relative to a stationary observer. Enter a velocity and a shipboard duration to see how much time passes outside.

Velocity — 90% of c

% c

Shipboard (proper) duration

LORENTZ FACTOR (γ)2.294157

DILATED TIME2.294157 years

TIME RATIO2.294157 : 1

While 1 years pass aboard the ship, 2.294157 years elapse for a stationary observer.

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