Relativity of Simultaneity
Observer Velocity
v / c
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Presets
Simultaneous
Same time in rest frame — but not for a moving observer
Causally Connected
Timelike separation — order can never be reversed
Spacelike Separated
Order flips depending on the observer's velocity
Info
Interval s²
—
Separation
—
Rest frame
—
Moving frame
—
—
Animated Scene
Spacetime Diagram