The 54.81 Hz and 62.64 Hz weighted tuning forks are based on the Schumann Resonance (7.83 Hz), the natural background pulse of the earth's electrical signal.
Individually these forks comprise the 7th and 8th harmonic of this important frequency. Used together they create a binaural beat of 7.83 Hz that can be applied to the body via the handles or listened to in either ear. The Schumann pair resonate with the electromagnetic pulse of the earth. These forks support alignment of our own electrical resonance with this grounding pulse. The Schumann forks balance the electric/plasmic aspect of our being.
This pair is a great addition for those looking to expand their tuning toolkit. They are useful alone and together, and are highly effective both on the body and in the field!