वर्ष
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घटना
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1600 |
English scientist William Gilbert coined the word electricus after careful experiments.
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1705 |
English scientist Francis Hauksbee made a glass ball that glowed when spun and rubbed with the hand
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1720 |
English scientist Stephen Gray discovered insulators and conductors
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1745 |
German physicist Ewald Georg von Kleist and Dutch scientist Pieter van Musschenbroek invented Leyden jars
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1752 |
American scientist Benjamin Franklin showed that lightning was electrical by flying a kite, and explained how Leyden jars work
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1780 |
Italian scientist Luigi Galvani discovered the Galvanic action in living tissue
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1783 |
French physicist Charles-Augustin de Coulomb formulated Coulomb's law
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1785 |
French mathematician Pierre-Simon Laplace developed the Laplace transform to transform a linear differential equation to an algebraic equation. Later, his transform became a tool in circuit analysis.
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1800 |
Italian physicist Alessandro Volta invented the battery
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1816 |
English inventor Francis Ronalds built the first working electric telegraph
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1820 |
Danish physicist Hans Christian Ørsted accidentally discovered that an electric field creates a magnetic field
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1820 |
One week after Ørsted's discovery, French physicist André-Marie Ampère published his law. He also proposed right-hand screw rule
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1821 |
German scientist Thomas Johann Seebeck discovered thermoelectricity
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1825 |
English physicist William Sturgeon developed the first electromagnet
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1827 |
German physicist Georg Ohm introduced the concept of electrical resistance
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1831 |
English physicist Michael Faraday published the law of induction (Joseph Henry developed the same law independently)
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1831 |
American scientist Joseph Henry in United States developed a prototype DC motor
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1832 |
French instrument maker Hippolyte Pixii in France developed a prototype DC generator
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1833 |
Michael Faraday developed laws of electrolysis
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1833 |
Michael Faraday invented thermistor
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1833 |
English Samuel Hunter Christie invented Wheatstone bridge (It is named after Charles Wheatstone who popularized it)
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1836 |
Irish priest (and later scientist) Nicholas Callan invented transformer in Ireland
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1837 |
English scientist Edward Davy invented the electric relay
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1839 |
French scientist Edmond Becquerel discovered the Photovoltaic Effect
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1844 |
American inventor Samuel Morse developed telegraphy and the Morse code
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1845 |
German physicist Gustav Kirchhoff developed two laws now known as Kirchoff's Circuit laws
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1850 |
Belgian engineer Floris Nollet invented (and patented) a practical AC generator
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1855 |
First utilization of AC (in electrotherapy) by French neurologist Guillaume Duchenne
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1856 |
Belgian engineer Charles Bourseul proposed telephony
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1856 |
First electrically powered light house in England
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1860 |
German scientist Johann Philipp Reis invented Microphone
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1862 |
Scottish physicist James Clerk Maxwell published four equations bearing his name
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1866 |
Transatlantic telegraph cable
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1873 |
Belgian engineer Zenobe Gramme who developed DC generator accidentally discovered that a DC generator also works as a DC motor during an exhibit in Vienna.
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1876 |
Russian engineer Pavel Yablochkov invented electric carbon arc lamp
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1876 |
Scottish inventor Alexander Graham Bell invented telephone
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1877 |
First street lighting in Paris, France
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1877 |
American inventor Thomas Alva Edison invented phonograph
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1877 |
German industrialist Werner von Siemens developed primitive loud speaker
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1878 |
First hydroelectric plant in Cragside, England
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1878 |
English engineer Joseph Swan invented Incandescent light bulb
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1879 |
American physicist Edwin Herbert Hall discovered Hall Effect
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1879 |
Thomas Alva Edison introduced a long lasting filament for the incandescent lamp.
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1880 |
French physicists Pierre Curie and Jacques Curie discovered Piezoelectricity
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1882 |
First thermal power stations in London and New York
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1883 |
English physicist J J Thomson invented waveguides
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1887 |
German American inventor Emile Berliner invented gramophone record
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1888 |
German physicist Heinrich Hertz proved that electro magnetic waves travel over some distance. (First indication of radio communication)
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1888 |
Italian physicist and electrical engineer Galileo Ferraris publishes a paper on the induction motor and Serbian-American engineer Nikola Tesla gets a US patent on the same device[3][4]
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1890 |
Thomas Alva Edison invented fuse
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1893 |
During the Fourth International Conference of Electricians in Chicago electrical units were defined
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1894 |
Russian physicist Alexander Stepanovich Popov developed a prototype of a radio receiver
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1896 |
First successful intercontinental telegram
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1897 |
German inventor Karl Ferdinand Braun invented cathode ray oscilloscope (CRO)
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1900 |
Italian inventor Guglielmo Marconi succeeded in first radio broadcast
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1901 |
First transatlantic radio broadcast by Guglielmo Marconi
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1901 |
American engineer Peter Cooper Hewitt invented Fluorescent lamp
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1904 |
English engineer John Ambrose Fleming invented diode
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1906 |
American inventor Lee de Forest invented triode
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1908 |
Scottish engineer Alan Archibald Campbell-Swinton, laid the principles of Television.
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1911 |
Dutch physicist Heike Kamerlingh Onnes discovered Superconductivity
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1912 |
American engineer Edwin Howard Armstrong developed Electronic oscillator
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1915 |
French phyisicist Paul Langevin and Russian engineer Constantin Chilowsky invented sonar
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1917 |
American engineer Alexander M. Nicholson invented crystal oscillator
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1918 |
French physicist Henri Abraham and Eugene Bloch invented multivibrator
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1919 |
Edwin Howard Armstrong developed standard AM radio receiver
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1921 |
Metre Convention was extended to include the electrical units
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1925 |
Austrian American engineer Julius Edgar Lilienfeld patented the first FET (which became popular much later)
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1926 |
Yagi-Uda antenna was developed by the Japanese engineers Hidetsugu Yagi and Shintaro Uda
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1927 |
American engineer Harold Stephen Black invented negative feedback amplifier
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1927 |
German Physicist Max Dieckmann invented Video camera tube
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1928 |
First experimental Television broadcast in the US.
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1929 |
First public TV broadcast in Germany
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1931 |
First wind energy plant in the Soviet Union
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1936 |
Dudley E. Foster and Stuart William Seeley developed FM detector circuit.
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1936 |
Austrian engineer Paul Eisler invented Printed circuit board
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1936 |
Scottish Scientist Robert Watson-Watt developed the Radar concept which was proposed earlier.
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1938 |
Russian American engineer Vladimir K. Zworykin developed Iconoscope
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1939 |
Edwin Howard Armstrong developed FM radio receiver
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1939 |
Russell and Sigurd Varian developed the first Klystron tube in the US.
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1941 |
German engineer Konrad Zuse developed the first programmable computer in Berlin
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1944 |
Scottish Engineer John Logie Baird developed the first color picture tube
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1945 |
Transatlantic telephone cable
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1947 |
American engineers John Bardeen and Walter Houser Brattain together with their group leader William Shockley invented transistor.
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1948 |
Hungarian-British physicist Dennis Gabor invented Holography
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1950 |
French physicist Alfred Kastler invented MASER
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1951 |
First nuclear power plant in the US
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1953 |
First fully transistorized computer in the US
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1958 |
American engineer Jack Kilby invented the integrated circuit (IC)
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1960 |
American engineer Theodore Harold Maiman invented the LASER
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1962 |
Nick Holonyak Jr. invented the LED
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1963 |
First home Videocassette recorder (VCR)
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1963 |
Electronic calculator
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2008 |
American scientist Richard Stanley Williams invented memristor which was proposed by Leon O. Chua in 1971
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