The frequency unit of the International System of Units is known as Hertz or Hertz in Spanish. It is closely related to the propagation of electromagnetic waves, discovered by the physicist Heinrich Rudolf Hertz, from whom it gets its name.
The Hertz is used worldwide as a reference element to measure the frequency of time units in different areas and scientific fields whenever periodic events are discussed. Normally, Hertz is associated with the measurement of radio and audio waves in which one Hertz is equivalent to one cycle per second, meaning cycle then any periodic or repetitive event. The Hertz is a default unit, however it does not have a specific number. It only means one cycle per second, and its multiples can be kilohertz, 10 Hz cubed, megahertz, 10 Hz to the sixth power, gigahertz, 10 Hz to the ninth power, or terahertz, 10 Hz to the twelfth power.
As sound travels in waves of oscillating pressure, it can be measured and analyzed through the Hertz unit. Hence, today we can speak of ultrasound, infrasound and other molecular vibrations, each possessing different frequency characteristics. However, Hertz or Hertz can also be used to measure electromagnetic radiation, since it also travels in oscillations of magnetic and electric fields. This is when the measurement of radio frequency comes into play, which must be measured in kilohertz, megahertz or gigahertz.
At the same time, light can also be measured from the same parameters, with the difference that it travels at a much higher speed, having to speak of infrared light or light.
ultraviolet. Finally, the Hertz unit is also present in computers since their speed clocks are expressed in mega or gigahertz.
