Beams of glowing light rapidly racing in closed circular trajectories inside the transparent sphere interior. Off-screen voiceover (all characters have their mouths closed, no one is speaking on screen): Narrator: "У кугельблица внутри нет вещества вообще. Только фотоны, циркулирующие по замкнутым орбитам." --- Don't speak, this is just background voice. No lip-sync: no character's mouth move...
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