Hello. In the past blog, I mentioned one outstanding man, Johann Schweigger. Why is he outstanding? Because he first invented the galvanometer. Since then, physicists could easily register the presence of current in the circuit.

On September 16, 1820, at the congress of natural scientists in Halle, the professor of the University of Halle, Johann Schweiger (1779–1857) first showed the “multiplier” — the first current meter based on the deviation of the magnetic needle of a compass in a field of wire twisted in a coil of several turns, through which the measured current passes. Schweiger owns the term «galvanometer», his device was called «Schweiger’s multiplier»

Next time I will tell you about an equally interesting thing, but for the time being I will leave it in the secret

Hello to all. Today we will talk about an element that is an integral part of an oscillating circuit, an inductor coil.

who is the creator and date of the invention of the inductance is unknown for certain. But with the help of some data you can roughly determine the father of the coil:

1)Based on the report by Oersted, Laplace suggested: the effect of the current on the magnetic needle can be strengthened by bending the wire.

2)Schweiger implemented what he heard in practice by creating the world’s first galvanometer, using Ampere’s reports on the dependence of the angle of deflection of the arrow on the amperage.

So, we can assume that the coil was invented by these people in the first half of the 19th century.

Hi, I recently talked about the first radio. after this event, many new things were discovered and improved. Now it is impossible to imagine any device without electronic components such as a capacitor, resistor, transistor, diode, etc.

Let’s talk about capacitors. For the first time a capacitor was created by chance. The Dutch scientist Peter van Muschenbruck, doing his experiments with the electric machine in 1745, accidentally dropped one of its electrodes into a jar of water. And then he accidentally touched the electrode when the car was not working, and felt an electric charge.

But as in the story of the radio there are two versions of those events. There is another version of the event. In 1745, the German cleric Ewald Jugen von Kleist tried to conduct a scientific experiment in order to “charge” holy water with electricity. By accidentally touching then to the electrode, he also felt the full power of electricity.

Hello. Today we will continue to talk about the history of radio engineering.

Now I will talk about one of the most important and first inventions that was created by the Russian scientist Alexander Stepanovich Popov. On May 7, 1895 an event occurred in the circles of St. Petersburg that did not immediately attract much attention, but was practically the beginning of one of the world’s greatest technical discoveries . This event was the report of A. S. Popov, a physics teacher in the Mine officer class of Kronstadt, «On the relationship of metal powders to electrical oscillations.» This day is considered the day of the invention of the radio.

But they do not think so all over the world, the other half believe that Italian physicist G. Marconi invented the first radio. Disputes on this topic do not subside to this day.

Hey. The modern world cannot be imagined without many different electronic inventions and gadgets that we use daily. Do you know how all these things we cannot imagine our today’s life without were created? That’s what I will tell you in my blog. 

The history of radio engineering originates far back in 1821. 

Radio originated from fundamental discoveries in the field of physics and electrical engineering. In 1821 M. Faraday discovered the rotation of a magnet around a conductor with a current and the rotation of a conductor with a current around a magnet. At the beginning of the XIX century, the science of electromagnetic phenomena was created. Its basis was the discovery of the electromagnetic field associated with the names of three eminent scientists: the English physicist Michael Faraday, who discovered the phenomenon of electromagnetic induction in 1831; English physicist James Maxwell, who created the theory of the electromagnetic field (1865); German physicist Heinrich Hertz, who experimentally confirmed for the first time the existence of electromagnetic waves (1887), described by Maxwell’s theory. 

If you want to find more information, you can always find it in the google search engine.