infrasound
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infrasound is silent but can cause anxiety, fear, mood swings,
extreme sorrow, blurred vision, and chills. some scientists think it's present
in haunted houses. it's been used to detect hurricanes, meteor
blasts and volcanic
eruptions; have been used in the
Cold War, concerts, and churches; and by elephants, giraffes, rhinoceros, and whales.
i'm still wondering why infrasounds are present in haunted houses........ (via
kurzweilAI)
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