http://kesar_civ.livejournal.com/ ([identity profile] kesar-civ.livejournal.com) wrote in [personal profile] assucareira 2015-03-04 06:05 pm (UTC)

Вот именно, что длина волны большая. Для инфразвука этот минимум 18 метров. Излучатель должен быть сравнимых размеров.
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