Is ultrasound and high frequency one kind?

Ultrasound: We know that when an object vibrates, it makes a sound. Scientists refer to the number of vibrations per second as the frequency of sound, and it is measured in hertz.

The frequency of sound waves that our human ears can hear is 20 to 20,000 Hz. When the frequency of sound waves vibrates more than 20,000 Hz or less than 20 Hz, we cannot hear them. Therefore, we call sound waves with frequencies higher than 20,000 Hz "ultrasound".

Ultrasound, which is usually used for medical diagnosis, has a frequency of 1 5 MHz. Ultrasonic waves have the characteristics of good directionality, strong penetrating ability, easy to obtain concentrated sound energy, and long propagation distance in water. It can be used for distance measurement, speed measurement, cleaning, welding, stone crushing, etc.

There is a noticeable role in medicine, military, industry, agriculture.

Theoretical studies show that under the condition of the same amplitude, the energy of an object vibration is proportional to the vibration frequency, and when the ultrasonic wave propagates in the medium, the frequency of the vibration of the medium particle is very high, so the energy is very large. In the dry winter in northern China, if the ultrasonic wave is passed into the water tank, the violent vibration will break the water in the tank into many small droplets, and then use a small fan to blow the droplets into the room, which can increase the indoor air humidity. This is how ultrasonic humidifiers work.

Pharyngolaryngitis. For diseases such as tracheitis, it is difficult for the medicine to reach the affected area. Using the principle of humidifier, the liquid medicine is atomized and inhaled by the patient, which can improve the efficacy.

The huge energy of ultrasound can also make the stones in the human body break by violent forced vibration, so as to alleviate the pain and achieve the best purpose.

High frequency: High frequency is high frequency. In fact, high-frequency waves are a type of ultrasound, and their distinguishing criterion is frequency.

Ultrasound refers to sound waves that are inaudible to the human ear. Normal human hearing can hear sound waves from 16 hertz (Hz) to 20 kilohertz (khz), sound waves below 16 Hz are called infrasonic or subsound waves, and sound waves above 20 kilohertz are called ultrasound. Ultrasound is a member of the large family of sound waves.

You all know that one is an electromagnetic wave and the other is a mechanical wave.

So ultrasound and high-frequency waves are certainly not one or the other!

Summary. Hello, no. Ultrasonic wave is a sound wave, which is a sound wave with a frequency higher than 20,000 hertz, it has good directionality, strong penetrating ability, easy to obtain more concentrated sound energy, and has a long propagation distance in water, which can be used for distance measurement, speed measurement, cleaning, welding, stone crushing, sterilization and disinfection, etc.

Are ultrasound high wave frequencies?

Hello, no. Ultrasonic wave is a sound wave, which is a sound wave with a frequency higher than 20,000 hertz, it has good directionality, strong penetrating ability, easy to obtain more concentrated sound energy, and has a long propagation distance in water, which can be used for distance measurement, speed measurement, cleaning, welding, stone crushing, sterilization and disinfection, etc.

It's not a high-frequency ** instrument.

Can you play with mobile phones?

**When.

But why do you need to take out the metal when you do ultrasound?

What do you mean?

No, for safety, avoid interference.

Since it's not a high frequency, you can play with your phone.

What are the implications?

No, mobile phones can interfere with ultrasound. Just do it according to the requirements of the hospital.

Ultrasonic waves work differently from high-frequency waves, which are converted from electrical energy into mechanical energy and vibrate. High frequency is operated by converting electrical energy into temperature.

High-frequency waves use high-frequency electromagnetic fields to cause molecules inside materials to collide violently with each other to produce high temperatures, while ultrasonic waves use high-frequency sound waves to generate heat.

There are many types of ultrasonic, including ultrasonic plastic welding machine, ultrasonic plastic welding machine, ultrasonic plastic welding machine, ultrasonic cleaning machine, ultrasonic welding machine, ultrasonic plastic cutting machine and so on. There are also fusion splicers, fusing machines, and high-frequency plastic fusion splicers.

A brief introduction to the principle of ultrasonic and high-frequency, the difference between them is that high-frequency and ultrasound are two different concepts, high-frequency refers to electromagnetic waves with a frequency greater than 100kHz, and ultrasonic refers to sound waves with a frequency of more than 20 kHz. The high-frequency welding principle, welding principle and ultrasonic wave are also different, the high-frequency electromagnetic field is generated by the self-excited oscillator of the electron tube, so that the high-frequency electric field between the upper and lower electrodes of the processed plastic, its internal molecules produce distance force motion friction, and obtain its welding purpose and welding effect under the pressure of the mold. Ultrasonic uses the principle of frictional heat generation to generate a large amount of heat to achieve the purpose of welding and welding.

High-frequency application fields are wide, so there are high-frequency plastic welding machines, high-frequency plastic fusing machines, high-frequency folding box indentation machines, high-frequency embossing machines, high-frequency heating machines, etc.