However, technological advances are making it possible to develop WMD based on qualitatively new principles, such as infrasonic (acoustic), radiological (enhanced-radiation), or particle-beam weapons. ❋ United States Army (1998)
Although we cannot hear these "infrasonic" waves - which have frequencies ranging from 0. 01-10 Hz - we know they exist from acoustic recordings around the globe. ❋ Unknown (2009)
Georgia Tech's center is testing highly sensitive "infrasonic" microphones that pick up sounds whose frequencies are too low to be detected by the human ear. ❋ Cameron McWhirter (2011)
They may also use the infrasonic roar of distant ocean waves or wind in far-off mountains as acoustic landmarks. ❋ Sy Montgomery (2010)
Many animals, including birds, almost certainly hear infrasound; birds might even use the infrasonic rumblings of the ocean or the shifting plates of the earth to help navigate on their migrations. ❋ Sy Montgomery (2010)
What will hit us is noise, both the audible and the infrasonic, shadow-flicker, ice throw, and the deaths of birds and bats in our preserved fly way. ❋ Unknown (2009)
HSBC makes a good point that seismological evidence as well as infrasonic data would be of great value in determining the authenticity of the claim. ❋ Unknown (2009)
Eruptive phenomena are monitored 24/7 and in all weather conditions with continuously transmitting seismic and infrasonic instruments designed to distinguish explosive, ash-producing eruptions from volcanic earthquakes and tremor without ash production. ❋ Unknown (2009)
There was some debate about elephants congregating as if through magic, but then it was discovered that they were communicating through infrasonic sound waves. ❋ Sean (2008)
Frequencies higher than audio are referred to as ultrasonic, while frequencies below audio are referred to as infrasonic. ❋ Unknown (2006)
The brown note, according to an urban legend, is an infrasonic frequency that causes humans to lose control of their bowels. ❋ Unknown (2005)
The side effect of the portal was infrasonic frequencies and it's reactions with different elements it encountered. ❋ Scifirantergirl (2007)
The design is such that the sound of the book being opened onto a table has infrasonic content, too low for human hearing. ❋ Rogers (2006)
A good portion of Boronian hearing and speech fell in the infrasonic, but he didn't need to hear all the words to get their meaning. ❋ Unknown (2004)
Another of Donnie's gadgets was an electronic insect repeller that emitted some kind of signal -- ultrasonic, infrasonic, magnetic, he wasn't quite sure -- guaranteed to keep pests at bay. ❋ Unknown (2004)
Bedard reports that a study in Armenia is examining infrasonic waves that appear to be emitted as precursors to earthquakes. ❋ Unknown (2003)
And he both heard and felt it, in the continual roar and thunder of submarine earthquakes, the hiss of escaping gases from the interior, the infrasonic pressure waves of avalanches sweeping over the abyssal plains. ❋ Clarke, Arthur C. (1982)
Anything below that is infrasonic with respect to how the human nervous system is calibrated. ❋ Dimitri Hamlin (2012)
