[問題] 一個光子6Mev,另一個3MeV,互相接近,求rest enery
如題,這是中正的考古提,我完全沒有想法,光子的rest energy是什麼意思?
兩個互相接近光子,我試著考慮都普勒,可是下不了手,考慮四動量,我根本不知道
rest energy要搞捨?光子不是沒有靜止質能嗎?那他指的是???拜託神手指教
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