ISLAMABAD-Whether it’s in the wake vortex of airplanes taking off or in seemingly calm air, there are few issues more meddlesome to flight than turbulence. Not only can these “horizontal tornadoes” make air travel uncomfortable and possibly dangerous, but attempts to avoid them can consume large amounts of fuel. Researchers at NASA have developed technology to find these zones, and with some engineering ingenuity, they could revolutionize both flight planning and aeronautical research.Everything in the atmosphere can make a sound.
Volcanoes rumble, waterfalls crash, and air rushes, but there’s more to that sound than what our ears perceive. Much like how infrared light consists of frequencies that aren’t visible to the naked eye, there’s an audio analog called infrasound. Infrasound consists of pitches too low to be heard by the human ear, between 0.001 and 20 hertz.
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