Differences between ultrasound and infrasound and their uses are as follows:
I. Differences between ultrasound and infrasound
1. Frequency: This is the most obvious difference. The frequency of ultrasound is usually higher than 20kHz, while the frequency of infrasound is usually lower than 20Hz.
2. Perception: Since the human ear can only hear sound of a specific frequency, we cannot hear ultrasound and infrasound. However, scientists can use special equipment to detect and measure these sounds.
3. Applications: Although we cannot hear or see ultrasound and infrasound directly, they have important applications in many fields. For example, ultrasound is commonly used in medical diagnostics (e.g., ultrasonography) and in industrial (e.g., cleaning and welding) applications. Infrasound, on the other hand, plays an important role in scientific research, especially in the study of the Earth's internal structure and earthquake prediction.
Two, ultrasound and infrasound uses
Use of ultrasound
1, medical diagnosis: ultrasound is an important tool in modern medicine. It can be used to examine organs and structures inside the body, such as the heart, liver and kidneys. In addition, it can be used to guide certain types of surgical instruments (such as ultrasonic scalpels).
2. Physical therapy: Ultrasound is also used in physical therapy, such as to promote wound healing and pain relief.
3, industrial applications: in industrial production, ultrasound is commonly used in cleaning, cutting, welding and drilling tasks. For example, it can be used to clean and remove contaminants, or for cutting metal and non-metal.
Uses of infrasound
1, Geological research: infrasound is very useful for studying the Earth's internal structure and crustal movements. For example, by analyzing the infrasound data generated by earthquakes, scientists can deduce the stress distribution inside the earth and the movement status of the crust.
2, environmental monitoring: infrasound can also be used for environmental monitoring. For example, it can be used to detect gas concentrations and temperature changes in the atmosphere.
3, military applications: in the military field, infrasound is sometimes used as a non-lethal weapon. For example, certain types of artillery shells emit infrasound to disable or disable enemy equipment.