The development process of national electric power in 1930s
B.C.
624-546
The Greek philosopher Darce found that rubbing amber attracts fine lines, just like a magnet attracts iron.
Guibert (1603) pointed out that the earth is a big magnet. The word "electron" is defined in Greek.
1660 Germany ott von guerick (1602-1686) manufactures friction motors.
1703 Dutch businessmen brought stones that can generate electricity after heating from Seren Island to Japan.
1729 Gray (-1736) thinks that matter can be divided into conductor and insulator.
Franklin argued that electricity is a fluid.
1733 deffe (1698-1739) discovered positive and negative electricity, and put forward the theory that electricity is two fluids.
1744 Pieter von Muschenbroek invented the bottle.
1752 Franklin (1706- 1790) used kite experiments to prove that lightning and triboelectric properties are the same, so he invented the lightning rod.
1753 John Canton (17 18- 1772) discovered the electrostatic induction device and reported it to the Royal Society.
1772 Italian galvani (1737- 1798) put forward the concepts of dielectric constant between inverse square law and charged body.
1775 Italian volt design panel.
1779 Coulomb of France put forward the law of friction.
1780 Italian galvani (1737- 1798) found that two different metals would collide, which is called animal electricity.
Coulomb (Columbus, 1736- 1806) found that the electrostatic inverse square law between charged bodies and the magnetic force between magnetic poles are the so-called Coulomb's law.
1799 Volta (Volta, 1745- 1827) invented electric stacks and batteries.
1800 Volta Italia published a paper on Volta batteries in the Royal Society.
1805 Teodoro grotos (1785- 1822) published the theory of electric decomposition.
1820 French Ampere (1775- 1836) discovered the law of current and magnetic field intensity, and put forward the right-handed spiral rule.
1820 galvanometer was invented by John Shuvai (1779- 1857).
1820 Oster published (experiment of current acting on magnetic needle).
1820 Biot and Savart published Biot-Savart's law of electromagnetic action.
182 1 David of America (1778- 1829) invented the arc lamp.
182 1 Seebeck discovered the seebeck effect.
182 1 Faraday discovered electromagnetic rotation with mercury and magnets.
1823 French Ampere published the mathematical theory of current interaction.
1824 the French arago (1786- 1853) made a scroll turntable.
1825 William Stajohn of Britain (1783- 1850) successfully developed an electromagnet.
1827 german ohm (1787- 1854) discovered ohm's law.
1830 American Henry (1797- 1878) discovered electromagnetic induction and self-inductance.
Electromagnetic induction was discovered by Faraday (179 1- 1867).
1832 electromagnetic induction generator made in France (Picosi, 1808- 1835).
Heinlilenz (1804- 1865) discovered lenz's law about electromagnetic induction.
Motor made by Kherimon (Helimon, 180 1- 1874).
Daniel (Daniel, 1790- 1845) invented Daniel battery.
1837 American Moss (Morse, 179 1- 1872) invented the wired telecommunication machine and compiled Morse code.
1837 Wheatstone and Kirk in the United States do wired communication between Houston and Camden.
1838 card phone (180 1- 1870) is a good conductor, and it is applied to telecommunications.
1840 British joules (joule, 18 18- 1889) discovered the joule heat law.
1842 Kepler put forward Kepler effect.
At 1843 ohm, two oscillations and three oscillations were found.
1844 proposes that the metal resistance increases in proportion with the increase of temperature.
1855 Lyon, France (Leon, 18 19- 1869) discovered the eddy current.
1858 Bourouga (BLUCA, 180 1- 1868) invented the cathode ray.
1860 waste Thorup (1834- 1889) invented the lead storage battery.
The call was made by John Reese (1834- 1874).
1863 Hz (sound perception theory).
Maxwell (183 1- 1879) published the theory of radio waves.
1866 Veruna Fonne Gemeis (18 16- 1892) invented the self-excited DC generator.
1868 Geroluge Lugulanse (1839-1882) of France invented a manganese dry battery with zinc and carbon as electrodes.
1874 Cruise defines the discharge effect as "the fourth state".
1874 William Simmons made a thermometer with resistance.
1876 Gorantstein named the radiation emitted by the negative electrode during vacuum discharge as "cathode line".
1876 Bell (1847- 1922) invented the magnet telephone.
1877 Thomas Edison (1847- 193 1) invented the mechanical phonograph.
1877 British (Le Bedo Huse, 183 1- 1900) carbon microphone.
188 1 American Edison built a coal-fired power plant in new york, and began to supply power for electric lights.
1883 American Edison discovered the thermionic emission of metals.
1884 Boltzmann proved Steven and Pozmann's laws in theory.
1885 American William starling (1858- 19 16) improved the double pressure device to make it available for application.
1886 George Westinghouse (1846- 19 14) successfully used transformers for AC power transmission and distribution.
1887 Hz (hertz, 1857- 1894) discovered the influence of ultraviolet rays on the discharge, and the existence of electric waves was confirmed by experiments.
1889 Hallwachs discovered the charging effect.
189 1 storni uses the name "electronic" for semantic purposes.
1892 The first hydropower DC power station was built in Biwa Lake.
1895 Marconi's radio communication device was patented in Britain.
1897 Thomson, Germany, published that the cathode line is an electron flow.
The kinescope was invented by Froude N Ludo Brown (1850- 19 18).
190 1 Radio waves cross the Atlantic Ocean.
1904 ambrowzflamin (1849-1945) invented the diode vacuum tube.
1907 American Ledo Frodo (1873- 196 1) invented the triode vacuum tube.
19 10 An American named Legordo Krieger (1873-) invented the tungsten lamp gun.
1910 Neon lamp invented by Geougeo Cludo (1870- 1960).
Vanden Brook studied the relationship between atomic number and nuclear charge.
1925 British Berdo (1888- 1966) made a mechanical TV set.
1926 electronic geometric optics proposed by bush.
193 1 Wilson proposed the Wilson model of semiconductor electron energy pole.
1932 Anderson discovered positrons.
Chadwick discovered neutrons.
The electron microscope was first made in Germany.
1950 uses the word "electronic".
The invention and application of electricity. The invention of electricity has brought human industrial society into a new era, promoted the invention of metallurgical technology and chemical technology, and promoted the development of industries based on heavy industry, such as iron and steel industry, metallurgical industry and chemical industry. The development of industry has promoted the development of major cities in Britain, the United States and other countries. As the last developed capitalist country, the United States completed the process of urbanization in 1920, when its urbanization level reached 5 1.4%. As we all know, if the level of urbanization reaches 50%, it can be called a city country.