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I'm interested that some ULF (ultra-low frequencies, especially the 17 HZ zone) can cause humans to experience sensations of fear, trembling, or even claims of seeing ghostly apparitions. What an i...
I'm interested that some ULF (ultra-low frequencies, especially the 17 HZ zone) can cause humans to experience sensations of fear, trembling, or even claims of seeing ghostly apparitions. What an i...