Information AboutInfrasound |
| CATEGORIES ABOUT INFRASOUND | |
| acoustics | |
| seismology | |
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One of the pioneers in infrasonic research was s and shaking lab equipment, but no audible sound was picked up on his microphones. He concluded it was infrasound and soon got to work preparing tests in the labs. One of his experiments was an Infrasonic Gun , which was described as almost lethal as it quickly made the internal organs of the subjects begin to bleed from intense friction. At around 37 Hz and "low power", this gun violently shook the walls and ceiling almost to pieces. Infrasound sometimes results naturally from Ocean Wave s, Avalanche s, Earthquake s, Volcano es, and Meteor s. Infrasound can also be generated by man-made processes such as Explosion s, both chemical and Nuclear . The Comprehensive Nuclear-Test-Ban Treaty Organization uses infrasound as one of its monitoring technologies (along with Seismic , Hydroacoustic , and Atmospheric Radionuclide monitoring). s use naturally generated infrasound, from sources such as turbulent airflow over Mountain ranges, as a Navigation al aid. Scientists discovered by accident that the spinning core or vortex of a Tornado creates infrasonic sounds. When the vortices are large, the frequencies are lower; smaller vortices have higher frequencies. These infrasonic sound waves can be detected for up to 100 miles away, and so can help provide early warning of tornadoes. Concerning behavioral patterns of animals and the infrasonic effects of natural disasters, it is to be noted that animals can also recognize the infrasonic waves emitted from such natural disasters and can use these as an early warning. A very important example of this is the , and not infrasonic waves, that has sent these animals away. {Link without Title} It has long been realized that infrasound may cause feelings of awe or fear. Since it is not consciously perceived, it can make people feel vaguely that Supernatural events are taking place. In a controlled experiment published in September, 2003 , people at a concert were asked to rate their responses to a variety of pieces of music, some of which were accompanied by infrasonic elements. The participants were not aware of which pieces included the infrasound. Many participants (22%) reported feelings of anxiety, uneasiness, extreme sorrow, nervous feelings of revulsion or fear and chills down the spine which correlated with the infrasonic events. In presenting the evidence to the British Association, the scientist responsible said "These results suggest that low frequency sound can cause people to have unusual experiences even though they cannot consciously detect infrasound. Some scientists have suggested that this level of sound may be present at some allegedly haunted sites and so cause people to have odd sensations that they attribute to a ghost—our findings support these ideas". Some Film soundtracks also make use of infrasound to produce unease or disorientation in the audience. '' Irréversible '' is one such movie. In Music , Brian " Lustmord " Williams is known to utilize infrasound to create these same feelings. SEE ALSO
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