History of electrical engineering in dates. 1600 - 1850 gg.

Information	Events in the history of electrical engineering
1600	The first work on magnetic and electrical phenomena, written by the English scientist W. Gilbert, in which he introduced the term "electricity" into science, calling "electrically" bodies capable of electrifying.
1650	The first electrostatic machine
1745	A Leyden bank (a condenser), an electrical measuring instrument of Lomonosov , an electric indicator of G. V. Rikhman , the first direct evaluation device
1785	The pendant first used the torsion balance for electrical and magnetic measurements - one of the most accurate instruments of its time.
End of the XVIII century	The law of the interaction of electric charges and magnetic poles (Coulomb law) is established, the phenomenon of electrostatic induction is discovered, the electrical character of thunderstorm phenomena in the atmosphere is proved, a number of electricity theories have been developed, the effect of electricity on living organisms has been discovered, attempts have been made to establish a connection between electric and magnetic phenomena.
End of the XVIII-beginning of XIX centuries	Numerous scientific works described various electrostatic machines and devices intended for electrotherapy.
1799	Italian scientist A. Volta created the first source of a constant electric current - a volt pole .
1800	The British A. Carlyle and U. Nicholson for the first time carried out the electrolysis of water, and then of other liquids.
1803	In Petrov's work "The news of galvanic-voltaic experiments," published in 1803, for the first time indicates the possibility of using an electric arc for lighting, melting metals and reducing metals from their oxides.
1807	The discovery of X. Davy electrolytic method of obtaining alkali metals - potassium and sodium, previously unknown in pure form; In 1808 Davy received magnesium, barium, strontium, calcium in the same way.
1820	X. Oersted established the connection of the magnetic field with the current generating it. They discovered ( DF Arago ) the magnetization of a conductor by a current flowing through it, as well as the amplification of the magnetization effect when a rectilinear conductor was replaced by a wire helix-a solenoid. French scientists JB Bio and F. Savard established the law of the action of the current on a magnet.
1821	The discovery of thermoelectricity ( T. Seebeck ). G. Davy showed that the conductivity depends on the material and temperature of the conductor; He also noted the dependence of the conductivity on the area of the conductor. Faraday found that the electric current passing through the conductor can cause this conductor to rotate around the magnet or cause the magnet to rotate around the conductor. Consequently, Faraday's experience was a graphic illustration of the principle possibility of constructing an electric motor.
1824	In P. Barlow's book "Investigation of magnetic attraction" described a device known as the "Wheel Barlow" and is one of the historical monuments of the prehistory of the development of the electric motor .
1826 - 1827	Development of the fundamentals of electrodynamics and the establishment of the electrical nature of magnetism A. Ampere . The electrodynamic theory of Ampere is set forth by him in the work "Theory of electrodynamic phenomena, derived exclusively from experience" published in Paris.
1827	German physicist Georg Simon Om establishes a well-known law of an electrical circuit bearing his name. The results of Ohm's research were published in 1827 in the work "The Galvanic Chain Developed Mathematically by Dr. G. S. Om."
1828 - 1832	PL Shilling developed the first telegraph. This telegraph was based on the visual reception of code marks.
1831	M. Faraday showed the possibility of "transforming magnetism into electricity", revealing the phenomenon of electromagnetic induction . Six months later, the same phenomenon was observed independently of Faraday by the American physicist D. Henry.
1832	Establishment of a law on the direction of an inducted current, formulated by E. X. Lenz . This law allowed Lents to formulate an important principle for electrical engineering - the reversibility of the generator and motor modes of an electrical machine. An anonymous inventor created the first single-phase synchronous multipolar generator.
1833-1834 years.	Faraday's discovery of the laws of electrolysis. The terminology proposed by Faraday (electrode, anode, cathode) has survived to the present day.
1834	The American physicist Joseph Henry published an article "On the rocking motion produced by magnetic attraction and repulsion" in which he described the electric motor built by him. In this device for the first time an attempt is made to use the attraction of unlike and repulsing the magnetic poles of the same name in order to obtain continuous motion (in this case the oscillatory one). B. S. Jacobi built and described the first engine with a rotational movement of the anchor .
1837	During the development of the Peterhof-Kronstadt submarine telegraph line project, Schilling used rubber for isolating the underwater cable for the first time, and also indicated the possibility of using water or ground as a return wire.
1838	EH Lenz practically realized the reversibility of an electric DC machine, forcing it to work both in the generator mode and in the engine mode. BS Jacobi discovered electrotype, which made it possible to obtain by electrolysis exact replicas from the surface of objects and immediately found practical application in polygraphy, medals and other industries.
1841 - 1842	The Russian scientist E. X. Lenz and the English scientist JP Joule independently found quantitative characteristics of the thermal action of the current (Joule-Lenz law).
1844	The first arc lamp was created ( Zh. B. L. Foucault ). The first Morse telegraph line was built between Washington and Baltimore
1847	The German physicist G. R. Kirchhoff formulated two laws for branched electric circuits (Kirchhoff's laws).
1850	Jacobi developed the design of the direct-printing telegraph.

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