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Jak echo występuje?

Lustra będą płynąć obrazy i wysłać światło z powrotem. Ściany również wysłać głosy z powrotem. Jeśli stoimy nieco dalej od wysokiego muru lub dużego urwiska, usłyszysz Twój głos, który odkręci się kilka sekund później.

Jeśli Fala dźwiękowa napotka ścianę lub dużą i szeroką powierzchnię skały, obraca się do tyłu w kierunku jego źródła. Tak dzieje się echo. Jeśli wyodrębniony dźwięk jest krótki, a fale dźwiękowe docierają do akumulatora w normalny sposób, echo jest wyraźnie słyszalne. Ślady dźwięku pozostają w uchu przez 1/10 sekund.

Ponieważ prędkość dźwięku w powietrzu wynosi 340 metrów na sekundę, odległość między źródłem dźwięku a baterią do ECHA musi wynosić co najmniej 17 metrów.

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