1911
Heike Kamerlingh Onnes: He devoted himself mainly to the study of physics at low temperatures, making important discoveries in the field of electrical superconductivity, a phenomenon that occurs when some materials are at temperatures close to absolute zero.

1909
American physicist Robert Andrews Millikan measured the charge of the electron.

1888
Croatian-born American engineer Nikola Tesla designed the first practical system for generating and transmitting alternating current, Although at first he worked with Edison, later he settled on his account and dedicated himself to research and invention: high-frequency generator, coil, transformer.

1838
Around this time, the British physicist British physicist James Prescott Joule demonstrated that the heat given off in an electrical circuit circuit is proportional to the resistance of the conductor and the square of the intensity of the current.

1821
The British physicist and chemist Michael Faraday drew the magnetic field around a conductor the magnetic field around a conductor, through which an electric current was an electric current flowing through it. His contributions to contributions to electricity; he also demonstrated that a closed that a closed metallic container forms an electric screen. an electric screen.

1800
The Italian physicist Alessandro Volta presented his "pile device capable of maintaining a steady flow of electricity the forerunner of the battery, measured atmospheric electricity and did much other work on electricity. many other works on electricity. The unit of voltage (or potential difference) was named volt in his honor. volt in his honor.

1777
The French physicist Charles de Coulomb invented a torsion balance a torsion balance to accurately measure the force exerted force exerted between two electric charges, confirmed between two electric charges, confirmed Priestley's Priestley's observations and also demonstrated that this force is directly proportional to the charges. loads.

1673
Polarity of electric charges: The Frenchman Francois de Cisternay Du Fay
was the first to identify the existence
of two electric charges: Negative (-) and Positive (+).

600 B.C.
The Greek Thales of Miletus probably already knew that amber that amber, when rubbed on the skin, acquired the property of skin acquired the property of attracting small objects. small objects.

The Greek Theofastro speaks that there are other substances that have the same property as amber of attracting things little. He writes the first treatise where it is established that there are several substances, apart from amber, that have the property of attracting objects when rubbed. Thus he records what would be the first scientific study on electricity.

1923
Vladimir Zworykin: He dedicated his life to the development of television, electronics and optics.

1972 Invention of the internet: What in 1972 was a scientific project in the US. It is now used by more than a billion people.