Infrasound
Infrasound occurs where large masses are in motion. This happens in nature – with avalanches and earthquakes, for instance. But infrasound also arises through technology and industry. It’s caused by large machines and blasting. Even wind turbines …
Noise we can’t hear”Doku | planet e
Infrasound Noise We Can Not Hear: video 28 minutes
Mothers Against Wind Turbines Inc. 