Infrasound refers to sound waves or vibrations with frequencies lower than the human auditory range, typically less than 20 hertz. Although inaudible to humans, infrasound can be detected by certain animals and measured using specialized equipment. The prefix "infra-" in infrasound denotes its low frequency that is below the threshold of human hearing.
Infrasound waves are known for their ability to travel long distances, often penetrating through various mediums such as air, water, and solids. They are generated by various natural sources such as earthquakes, thunderstorms, volcanic eruptions, and oceanic waves, but can also be artificially produced by man-made sources such as airplanes, heavy machinery, and certain types of musical instruments.
The unique characteristics of infrasound make it useful in several scientific fields. For example, infrasound monitoring can aid in detecting and assessing natural disasters, including earthquakes and volcanic activities. It is also utilized in studying animal behavior, as certain species are sensitive to infrasound and use it for communication purposes.
Furthermore, infrasound can have different effects on individuals, including inducing feelings of unease or even fear. Some researchers suggest that exposure to infrasound for extended periods may cause physiological symptoms such as headaches, dizziness, and fatigue. However, more research is needed to fully understand these effects and their potential implications on human health and well-being.
In summary, infrasound refers to low-frequency sound waves that are below the range of human hearing. It has various natural and artificial sources and finds applications in different scientific fields.
