Relativity of simultaneity | StudentB Wikipedia Search

Back نسبية التزامن Arabic Relativnost současnosti Czech Relativität der Gleichzeitigkeit German Relatividad de la simultaneidad Spanish نسبیت همزمانی Persian יחסיות הסימולטניות HE Az egyidejűség relativitása Hungarian Միաժամանակության հարաբերականություն Armenian Relativitas simultanitas ID 동시성의 상대성 Korean

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On spaceships, map-clocks may look unsynchronized.

Event B is simultaneous with A in the green reference frame, but it occurred before in the blue frame, and will occur later in the red frame.

Events A, B, and C occur in different order depending on the motion of the observer. The white line represents a plane of simultaneity being moved from the past to the future.

In physics, the relativity of simultaneity is the concept that distant simultaneity – whether two spatially separated events occur at the same time – is not absolute, but depends on the observer's reference frame. This possibility was raised by mathematician Henri Poincaré in 1900, and thereafter became a central idea in the special theory of relativity.

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