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Lecture 2 - Physics 325 Lecture 18 Here is what we know so...

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Physics 325 Lecture 18 Here is what we know so far: 1) Two clocks that are synchronized in their rest frame appear non-synchronized when viewed from a frame that is in relative motion to the clocks. 2) A moving clock runs slow compared to a clock at rest. 3) A moving object appears to be shorter when measured along the direction of motion than the same object at rest. We re-visit the simultaneity problem: s viewed from a frame S that is co-moving with the t time the flash arrives at clock A At time the flash arrives at clock B. A A A B v G S 0 t = S’ At 0 t ′ = a flash of light goes off that i two clocks A and B , and from S’ from which the frame S is moving with velocity v G . A A A B v G S S’ A t t = A t t ′ = A A A A B v G S S’ B t t = B t t ′ =

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