The story starts with quantum field theory, which is incredibly complex, but the simplified version is that even empty space is filled with fields that could govern the interactions of any quantum objects in or near that space. You can think of different particles as energetic excitements of these fields—so a photon is simply an energetic state of the quantum field.
阿妈没再拦，只说她和我都不去。今年阿弟除夕值班没回来，年夜饭本来就少一个人，她不希望桌上再空位置。
。业内人士推荐搜狗输入法下载作为进阶阅读
FirstFT: the day's biggest stories
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