质量是在静止时的物质能量吧，光子不能在真空静止，静止质量这概念不存在。E=MC2 对光子可用E =PC 表达，p是动量

来源: 老键于 2023-12-02 18:32:13 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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