There are many here that have been sucked into a vortex of "evil" government have magically mastered the universe. The governments have done terrible things and have done some bizarre "experiments". Yes Nikola Tesla used the resonant frequency of the Earth to induce a wave that bounced off the core (mostly iron) and reflected back to the surface. This wave was re-induced in phase with the reflected wave and added to the strength. Theoretically you could cause catastrophic damage to the planet. The resonant frequency of the world is approximately 8 Hz. There are harmonics that can be utilized that are multiples of 8 Hz, however these have extremely limited range in air. The ionosphere would not reflect this frequency, it would absorb it and dissipate it. The HF spectrum 2-30 MHz has a unique ability to refract off the ionosphere for Beyond Line Of Sight communications, but variations to the thickness of the F1 and F2 layers (due to solar energy) can vary which frequencies are absorbed and which ones can be refracted back to the earth surface. Typically, 2MHz-4MHz are routinely absorbed throughout the entire daylight hours, they do refract at night and MAY be used for BLOS communications. The idea of using ANY audio frequency or below (20Hz-20kHz) is ludicrous. These subsonic frequencies that would possibly cause a resonant building in-phase wave with the earth do not propagate well through air, but instead can propagate long distances in water and solid earth. We have science folks, not magic.
There are many here that have been sucked into a vortex of "evil" government have magically mastered the universe. The governments have done terrible things and have done some bizarre "experiments". Yes Nikola Tesla used the resonant frequency of the Earth to induce a wave that bounced off the core (mostly iron) and reflected back to the surface. This wave was re-induced in phase with the reflected wave and added to the strength. Theoretically you could cause catastrophic damage to the planet. The resonant frequency of the world is approximately 8 Hz. There are harmonics that can be utilized that are multiples of 8 Hz, however these have extremely limited range in air. The ionosphere would not reflect this frequency, it would absorb it and dissipate it. The HF spectrum 2-30 MHz has a unique ability to refract off the ionosphere for Beyond Line Of Sight communications, but variations to the thickness of the F1 and F2 layers (due to solar energy) can vary which frequencies are absorbed and which ones can be refracted back to the earth surface. Typically, 2MHz-4MHz are routinely absorbed throughout the entire daylight hours, they do refract at night and MAY be used for BLOS communications. The idea of using ANY audio frequency or below (20Hz-20kHz) is ludicrous. These subsonic frequencies that would possibly cause a resonant building in-phase wave with the earth do not propagate well through air, but instead can propagate long distances in water and solid earth. We have science folks, not magic.