History of electrochemistry
In 1789, Franz Aepinus developed a device with the properties of a "condenser" (now known as a capacitor.) The Aepinus condenser was the first capacitor developed after the Leyden jar, and was used to demonstrate conduction and induction. The device was constructed so that the space between two plates could be adjusted, and the glass dielectric separating the two plates could be removed or replaced with other materials.
János Csonka
János Csonka (1852 in Szeged – 1939 in Budapest) was a Hungarian engineer, the co-inventor of the carburetor for the stationary engine with Donát Bánki, patented on 13 February 1893.
Csonka, self-educated in many fields, had no university degree, but became one of the greatest figures of Hungarian engineering industry, and with the carburetor he has heavily contributed to technical development in the world. He studied the Lenoir motor in Paris in 1874 and there he recognized the prospects of the internal combustion engine.
He became head of the training workshop at the Technical University of Budapest at the age of 25 where he employed skilled workers at his own expense, which allowed him to use the workshop for his experiments.
Csonka retired at the age of 73 and filed his last patent application at the age of 84.