Hertz is used to measure the frequency of oscillations of any kind, so the scope of its use is very wide. The unit in this measurement is interpreted as the number of oscillations made by the analyzed object within one second. In this case, experts say that the oscillation frequency is 1 Hertz. Accordingly, a greater number of oscillations per second corresponds to a greater number of these units. Thus, from a formal point of view, the value designated as Hertz is the inverse of the second. Significant values of frequencies are called high, small - low. Examples of high and low frequencies are sound vibrations of different intensity. For example, the frequencies in the range from 16 to 70 Hz form the so-called bass, that is, very low sounds, and the frequencies from 0 to 16 Hz are completely indistinguishable for the human ear. The highest sounds that a person is able to hear lie in the range from 10 to 20 thousand Hertz, and sounds with a higher frequency belong to the category of ultrasound, that is, those that a person is not able to hear.