Heinrich Rudolf Hertz

He was born in Hamburg on February 22, 1857. His father is Dr. Jules. Gustav Ferdinand Hertz was Jewish and converted to Christianity. He was a supporter of Hamburg and Oberlandsgerichtsrat, a senator in 1887 and also a judicial administration chief. His mother Anna Elizabeth, Fepelcorn is the daughter of Dr. Fepelcorn, a doctor in Frankfurt. When he was young he was interested in practical things and had his own studio. At the age of 15, he entered the Johanneum Stadium (Figure 1).

"Hertz (symbol Hz) is a frequency unit defined as the number of cycles per second of the International System of Units (SI), named after Heinrich Rudolf Hertz and the first to provide definitive evidence of the presence of electromagnetic waves One use is to describe sine waves and musical sounds, especially those used in radio and other audio related applications, and are also used to describe the speed of computers and other equipment I will.

Frequency (abbreviated as f) is the number of waves that pass through a particular point per second. It is named in Hertz (Hz) by German physicist Heinrich Rudolf Hertz (1857-1894) in the 19th century. This corresponds to one cycle per second. Higher frequencies are expressed in kilohertz (kHz; 103 or 1000 cycles per second) or megahertz (megahertz; 106 or 1,000,000 cycles per second). Human ears can hear 20 to 20,000 Hz, but in the case of bats, whales and dolphins it is relatively small and you can hear sounds with frequencies up to 150 kHz. Human voice is in the range of about 1 kHz, and the piano 88 key changes frequency from 27 Hz to 4,186 Hz. Each sound has its own frequency, and the middle C ("white key" in the center of the piano keyboard) is 264 Hz.

Hertz, which was named after the scientist Heinrich Rudolf Hertz, represents the frequency of the vibration as it passes through the medium. The medium is air, water, steel or the like. Vibrating particles do not move, and energy is sent like a spectator in a football game. The thing to remember is that the particles always oscillate at the same frequency. So, for example, you played a wonderful guitar at 1000 Hz. When sound waves pass through the air, the particles interact (create compression and sparseness), but the frequency remains the same 1000 Hz

Gurielmo Marconi is said to be "the father of the radio." After studying the experiment of Heinrich Rudolf Hearts in the 1880's, he first noticed the possibility of radio waves. He conducted a radio experiment in Italy in 1895 and received his first radio wave. Marconi acquired the first patent on wireless invention in 1896. According to his first invention, it was impossible to receive the radio wave within a few meters, but it changed soon and the distance over which the radio waves arrived became longer and longer.