The sun is a giant nuclear fusion reactor, converting hydrogen into helium and releasing massive amounts of energy in the form of heat – and sound. Sound is essentially vibration and needs a medium to travel through.
Controller was optionally available with a hard disk, and could be programmed
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Фото: Jacek Marczewski/Agencja Wyborcz / Reuters
5️⃣ 归并排序 (Merge Sort)