2. Military applications, often said that the most advanced technology first used in the military. Active sonar: the basic principle of the same upstairs said bats to explore the road.
3. Medical applications, M-type ultrasound, B-type ultrasound, Doppler effect color ultrasound, the basic principles are the same as those upstairs said bats to explore the road, which M-type ultrasound screen display is probably the spectrum, B-type ultrasound screen display for the two-color dot-matrix map, the color ultrasound screen display can be distinguished from the direction of blood flow (based on the Doppler effect).
4. Industrial applications, ultrasound emulsification can be crushed to very small particles, ultrasound radar can be used to detect the speed of movement of objects and defects within the material at close range and shallow surface.
5. Everyday applications, ultrasound mosquito repellent artificial simulation of male mosquitoes issued by the characteristic ultrasound to repel the female mosquitoes will suck blood with no smoke, no smell and harmless advantages, ultrasound washing with the upstairs, ultrasound telemetry is similar to ordinary infrared telemetry.
6. Agricultural applications: ultrasonic breeding, ultrasonic seedling cultivation, ultrasonic catalyzing.
1) through the study of natural phenomena produced by the characteristics of infrasound and the mechanism of generation, more in-depth study and understanding of the characteristics and laws of these natural phenomena. For example, by utilizing the infrasound waves produced by the aurora borealis, the laws of auroral activity can be studied.
(2) The use of the received infrasound generated by the sound source, you can detect the location of the sound source, size and other characteristics of the study. For example, by receiving the infrasound generated by a nuclear explosion, a rocket launch, or a typhoon, the relevant parameters of these infrasound sources can be detected.
(3) Prediction of natural catastrophic events. Many catastrophic natural phenomena, such as volcanic eruptions, tornadoes, thunderstorms, typhoons, etc., may radiate infrasound before they occur, and it is possible to utilize these precursor phenomena to predict and forecast the occurrence of these catastrophic natural events.
(4) infrasound propagation in the atmosphere, it is easy to be affected by the atmospheric medium, it has a close connection with the wind and temperature distribution in the atmosphere and other factors. Therefore, it is possible to detect the nature and laws of certain large-scale meteorology by determining the propagation characteristics of naturally or artificially generated infrasound waves in the atmosphere. The advantage of this method is that it allows for continuous detection and monitoring of the large-scale atmosphere.
(5) Detection of these activity characteristics by determining the results of the interaction of infrasound waves with other fluctuations in the atmosphere. For example, in the ionosphere the action of infrasound causes traveling interference in the propagation of electric waves, and the characteristics of infrasound can be measured to further reveal the laws of ionospheric disturbance.
(6) Human beings and other living creatures are not only capable of producing certain responses to infrasound, but also some of his (or its) organs emit weak infrasound. Therefore, the determination of the properties of these infrasound waves can be utilized to understand the activity of the corresponding organs of the human body or other living beings.