But that little girl set her sights even higher - she wanted to be at the controls of a spacecraft.
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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民族要复兴，乡村必振兴。中华民族伟大复兴的事业波澜壮阔！，这一点在夫子中也有详细论述