什麼時候是哪一個座標系觀察
拜託請解釋的詳細一點
謝謝!!
Observers O and O' are in the relative translational motion with v=0.6c.
They coincide at t=t'=0.
(a)When five years have passed, according to O, how long does O calculate it will take a light to get from O to O'?
(b)When the light signal arrives at O', how much time has elapesd according to O' since O and O' coincided?
更新1:
我不知道你們之間有什麼過節， 不過，拜託救救我好嗎?? 由衷的希望你們有把題目仔細看過...
更新2:
書上說第一題答案是7.5 years耶!! 是答案錯了嗎?? 其實我有點搞不清楚題目到底是問從t=0算起 還是從5年之後算起...??
