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.
Comments