Infraääntä

Infraääntä is a Finnish term that translates to infrasound in English. Infrasound refers to sound waves with frequencies below the lower limit of human audibility, typically considered to be around 20 Hertz (Hz). While humans cannot consciously hear infrasound, it can still be perceived through tactile sensations or felt as vibrations.

The sources of infrasound are numerous and can be both natural and artificial. Natural sources include earthquakes, volcanic eruptions, avalanches, meteor impacts, and severe weather phenomena such as thunderstorms and tornadoes. Large ocean waves also generate infrasound. Artificial sources include industrial machinery, wind turbines, large engines, aircraft, and explosions.

The effects of infrasound on humans are a subject of ongoing research and debate. Some studies suggest that prolonged exposure to high-intensity infrasound can cause a range of symptoms, including fatigue, nausea, dizziness, headaches, and a general feeling of unease or anxiety. However, establishing a direct causal link and understanding the precise mechanisms of these effects is challenging.

Infrasound has also been utilized in various applications. For example, it can be used for long-distance communication and detection of seismic or atmospheric events. Research is also exploring its potential in areas like art installations and therapeutic devices, although these applications are less established. The study of infrasound contributes to our understanding of natural phenomena and the potential impact of sound on human well-being.