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Patent No. 3612211 Method of producing locally occurring infrasound

 

Patent No. 3612211  Method of producing locally occurring infrasound (Clark III, Oct 12, 1971)

Abstract

Two spaced directional acoustical transducers are directed towards a common point so that the acoustical waves produced thereby intersect throughout a given area. By utilizing a frequency difference between the acoustical waves of less than 20 Hz., or by propagating the acoustical waves at the same frequency while phase modulating one of them at less than 20 Hz., resultant acoustical waves of less than 20 Hz. are produced in the area of intersection.

Notes:

While the invention described in the foregoing specification has obvious utility for laboratory experimentation, it may also have utility as a military weapon or for riot control, and it may be useful for submarine warfare, in which case intersecting beams could be transmitted through the water and a hull to occupants inside. Also, it is believed that infrasound may influence earthquakes and land mass movement and fault, as well as atmospheric conditions.

 

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