54.81 Hz Weighted Tuning ForkThe 54. 81 Hz tuning fork can be used separately, but is best in combination with the 62. 64 Hz weighted tuning fork to make the Schumann Pair. These two weighted tuning forks are based on the Schumann Resonance and is the natural background pulse of the earth's electrical signal. They comprise the 7th and 8th harmonic of this influential frequency. These forks can also be used separately or together to create a binaural beat of 7. 83 Hz that can be
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