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.
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展望未来，王毅表示，中国作为全球最大的潜在消费市场和最大的新兴经济体，经济长期向好的支撑条件更加完善，持续增长的基本趋势更加巩固，将继续做全球增长最稳定的动力源。