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The electric catfish of the Nile was well known to the ancient Egyptians.[8] The Egyptians reputedly used the electric shock from them when treating arthritis pain.[9] They would use only smaller fish, as a large fish may generate an electric shock from 300 to 400 volts.
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, Hauksbee had discovered that if he placed a small amount of mercury in the glass of his modified version of Otto von Guericke's generator, evacuated the air from it to create a mild vacuum and rubbed the ball in order to build up a charge, a glow was visible if he placed his hand on the outside of the ball. This remarkable discovery was unprecedented at the time. This glow was bright enough to read by. It seemed to be similar
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German physicist Ewald Georg von Kleist and Dutch scientist Pieter van Musschenbroek invented Leyden jars
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talian scientist Luigi Galvani discovered the Galvanic action in living tissue
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French physicist Charles-Augustin de Coulomb formulated and published Coulomb's law in his paper Premier Mémoire sur l’Électricité et le Magnétisme
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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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Italian physicist Alessandro Volta invented the battery
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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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English physicist Michael Faraday published the law of induction (Joseph Henry developed the same law independently)
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English Samuel Hunter Christie invented Wheatstone bridge (It is named after Charles Wheatstone who popularized it)
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German physicist Gustav Kirchhoff developed two laws now known as Kirchhoff's Circuit laws
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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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Russian engineer Pavel Yablochkov invented electric carbon arc lamp
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American inventor Thomas Alva Edison invented phonograph
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German industrialist Werner von Siemens developed primitive loudspeaker
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Edith Clarke invents the "Clarke calculator", a graphical calculator for solving line equations involving hyperbolic function, allowing electrical engineers to simplify calculations for inductance and capacity in power transmission lines[9
![Ancient Egyptian texts described electric fish and identified them with thunder[3]](https://s3.amazonaws.com/s3.timetoast.com/public/uploads/photo/15148252/image/60350acbe31d7af82203081daf7e6866?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAJB6ZCNNAN7BE7WDQ%2F20250727%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20250727T044948Z&X-Amz-Expires=604800&X-Amz-SignedHeaders=host&X-Amz-Signature=e09791b31a605c4ccc4751c67b105b253a2a29816a3d3e9b2450b0e207dba379)
