Causality
= Causality
{wiki=Causality_(physics)}
Causality requires an effect at an event to depend only on sources in its past light cone. Relativistic field equations implement this choice through retarded Green functions.
= Causality
{wiki=Causality_(physics)}
Causality requires an effect at an event to depend only on sources in its past light cone. Relativistic field equations implement this choice through retarded Green functions.