What is ultrasound? What are some fields that utilize it?

Ultrasonic wave is a special type of sound wave, it means the wave that exceeds the upper limit of the sound that a person can hear, and it is used in many fields.

Sound waves that vibrate more than 200,000 times per second are not perceived by the human ear and are called ultrasonic waves. Ultrasonic waves, like normal sound, can propagate in one direction and can pass through objects. When it encounters an obstacle, it will emit an echo, and different obstacles will emit different echoes.

Based on this characteristic, ultrasound has gained a wide range of applications, we are most familiar with the application in the medical field.

1, the application of the medical field

In medicine, ultrasound can be used to detect the body. Through the detector in contact with the human body, electrical energy into ultrasonic waves, ultrasonic waves into the human body, because there are many interfaces within the human body, so ultrasonic waves in the human body tissues will produce reflection, refraction, scattering and other phenomena, part of the ultrasonic waves will be returned to the detector, after a series of processing, it will appear on the screen.

In addition to this, people also use ultrasonic waves to treat asthma with medication broken into a very fine mist droplets, so that the medication is more likely to enter the deeper part of the airways, the efficacy of the treatment is greatly improved, and it is easier to be absorbed by the body.?

2, the application of food field

Through ultrasonic waves, you can sterilize the packaged cans, in the ultrasonic effect, the bacteria will not be able to withstand the strong vibration and be? dismembered? The use of ultrasound on alcohol can make the wine quickly aged.

Treating pork that has just been salted with ultrasonic waves and marinated for an hour after ultrasonic waves can achieve about 15 days of fermentation.

3, the application of the field of agriculture

Ultrasonic treatment can improve the germination rate of seeds and harvest, this is because in the process of ultrasound propagation, due to the molecular vibration of the medium, resulting in chemical reactions or molecular arrangement of the changes in some of the characteristics of the material.