What is ultrasonic frequency?

Introduction of ultrasonicfrequency:

The frequency of ultrasonic wave is the number of periodic changes completed in unit time, and it is aquantity that describes the frequency of periodic movement, which is commonly expressed by thesymbol f, the unit is one second, and the symbol is s-1. The unit of frequency is named Hertz, referred toas "Hertz", and the symbol is Hz. Every object has a frequencyindependent of amplitude determinedby its own properties, called the natural frequency. The concept of frequency is not only used inmechanics and acoustics, but also in electromagnetism, optics and radio technology.

The time required for a particle in the medium to vibrate 1 time in the equilibrium position is called theperiod, expressed by T, and the unit is second (s); The number of times a particle completes its vibrationin ls is called the frequency, expressed in f, in weeks /s, also known as Hertz (Hz). The period andfrequency are reciprocal to each other, and the following formula is expressed: the relationship betweerthe wavelength (in) and frequency of ultrasonic wave in f=1/T medium is: c=Af formula, c is the speed ofsound, m/s; ln is the wavelength, m; f is the frequency, Hz. lt can be seen that for a certain medium, thepropagation speed of ultrasound in it is certain. The higher the frequency of ultrasound, the shorter thewavelength: conversely, the lower the frequency of ultrasound, the longer the wavelength.