'Earth clocks run slow' diaporamas de présentation

Two balloons sit on the physics lecture hall desk, at the left and right edges.

Two balloons sit on the physics lecture hall desk, at the left and right edges. The balloon at the left edge bursts, and 2 seconds later the balloon at the right edge bursts. The spacetime interval between these events is A] spacelike B] lightlike C] timelike.

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