28 April 2006 12:30
早期宇宙中的基本粒子質量跟現在相同嗎?
by YukuanMark科學家經過比較實驗室中所測得的氫原子光譜及天文觀測所得的資料,發現質子與電子的質量比有可能會隨時間而變化,變化幅度約為120億年變化了0.002%。
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(1 marks)
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last mark : 28/04/2006 12:31