What does Hertz mean (what does Hertz mean in computer)

What does Hertz mean?

Hertz is the SI unit of frequency and represents the number of periodic events that occur per second.

Hertz is named after Heinrich Hertz, the scientist who first experimentally verified the existence of electromagnetic waves. It is often used to describe sine waves, musical tones, radio communications, and computer clock frequencies.

Definition

Hertz is defined as the number of periodic events that occur per second, while the International Commission on Weights and Measures defines a second as: the interval between two hyperfine energy levels of the ground state of the cesium 133 atom. The transition corresponds to the duration of 9,192,631,770 cycles of radiation, so the frequency of the transition corresponding to the radiation between the two hyperfine energy levels of the ground state of the cesium 133 atom is defined as 9,192,631,770 Hz.

Higher frequencies can be described using units such as kHz, MHz, GHz, and THz.

Although angular velocity and angular frequency, like frequency, have the dimension of the reciprocal of time, they are not expressed in Hertz but in radians per second. The angular velocity of a disk rotating 60 times per minute is 2π?rad/s and the frequency is 1Hz.

Origin of the name

German physicist Heinrich Rudolf Hertz first confirmed the existence of radio waves in 1888. He made great contributions to electromagnetics, so the SI unit of frequency, Hertz, is named after him.

As early as his boyhood, he was attracted by optical and mechanical experiments. At the age of nineteen, he entered the Dresden Institute of Technology to study engineering. Due to his interest in natural science, he transferred to the University of Berlin the following year and studied under the guidance of physics professor Helmholtz. In 1885 he became professor of physics at the University of Karlruhe. In 1889, he succeeded Clausius as professor of physics at the University of Bonn, a position he held until his death.

What does Hertz stand for? What does it mean?

Hertz is the unit of frequency in the International System of Units. It is a measurement of the number of repetitions of periodic changes per second. Hertz is also the unit of frequency in the International System of Units. It is a measurement of the number of repetitions of a periodic change per second. Hertz was named after the German physicist Heinrich Rudolf Hertz. Its symbol is Hz.

1Hz=1/s, that is, the number of vibrations completed in unit time, the unit is Hertz. Hertz is primarily used as a measure of sound frequency.

Extended information:

Commonly used frequency units include kilohertz, megahertz, gigahertz, etc.

Informative electrical signals sometimes contain many frequency components, all of which are plotted on the frequency axis and indicate the magnitude of each power or voltage component, the "spectrum" of the signal. The frequency range it occupies is called the frequency band range of the signal. For example, in telephone communication, the frequency range of voice signals is 300-3400hz; in FM broadcasting, the frequency range of voice signals is 40-15khz; in television broadcasting, the frequency range of voice signals is 0-4.2mhz.

Baidu Encyclopedia - Hertz

Baidu Encyclopedia - Frequency

What does Hertz mean?

It is frequency.

Hertz is also the unit of frequency in the International System of Units. It is a measurement of the number of repetitions of periodic changes per second. Hertz was named after the German physicist Heinrich Rudolf Hertz. Its symbol is Hz. Hertz is abbreviated as Hertz. One vibration per second is 1 Hz, or can be written as times/second, cycle/second. Named after German scientist Hertz.

History of production

Hertz used experiments to prove the existence of electromagnetic waves, and the propagation speed of electromagnetic waves is equivalent to the speed of light. Hertz experiments opened up the development of radio electronic technologies such as radio, radar and television. Innovative approach. He studied the effect of ultraviolet light on spark discharges and discovered the photoelectric effect. He believed that objects can release electrons when illuminated by light. This discovery became the basis for Einstein to establish the quantum theory of light.

Reference for the above content: Baidu Encyclopedia-Hertz

What does Hertz mean?

Hertz, the unit of frequency in the International System of Units, is the unit of frequency in the International System of Units. It is a measurement of the number of repetitions of periodic changes per second. Hertz is abbreviated as Hertz. One vibration per second is 1 Hz, or can be written as times/second, cycle/second. Named after German scientist Hertz.