Not related to the story but one of my fondest childhood memories was one stormy night listening to AM radio and hearing the crackle of thunder on the audio (an

Not related to the story but one of my fondest childhood memories was one stormy night listening to AM radio and hearing the crackle of thunder on the audio (and seeing the lightning at the same time), then switching to FM and noticing I couldn’t hear it anymore. I was so intrigued then as to why FM was unaffected.