Michael faraday is a student and assistant of the famous British chemist David. His discovery laid the foundation of electromagnetism and was the pioneer of Maxwell. Faraday first discovered electromagnetic induction on1831/kloc-0+017, and then obtained the method of generating alternating current. 183 1 year1year1October 28th Faraday invented the disc generator, which is the first generator created by human beings.

Because of his great contribution to electromagnetism, he is called "the father of electricity" and "the father of alternating current".

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The earliest experiment recorded by Faraday in (1) was to make a voltaic cell with seven and a half pence, seven zinc sheets and six pieces of wet paper immersed in salt water. He also used this battery to decompose magnesium sulfate.

(2) 182 1 year, after Danish chemist Han Christian Oster discovered electromagnetic phenomena, David and William Hyde wollaston tried to design an electric motor, but failed. After discussing the problem with them, Faraday went on working and built two devices to produce what he called "electromagnetic rotation": continuous rotating motion caused by the annular magnetic field outside the coil.

He connected the wire to the chemical battery to make it conductive, and then put it in a mercury pool with a magnet inside, and the wire would rotate around the magnet. This device is now called a unipolar motor. These experiments and inventions have become the cornerstone of modern electromagnetic technology.

(3) 183 1 year, Faraday started a series of important experiments and discovered electromagnetic induction, which is still one of Faraday's greatest contributions.

(4) His exhibition established the concept of "the change of magnetic field produces electric field" to the world. This relationship is modeled by Faraday's law of electromagnetic induction and becomes one of the four Maxwell equations. This set of equations is then summed up in the reception theory. Faraday invented the early generator according to this theorem, which is the ancestor of modern generators.

(5) Faraday also put forward the concept of electromagnetic wires: these streamline lines radiate from one pole of a charged body or magnet and point to another charged body or objects with different magnetic poles respectively. This concept helps the world to visualize the abstract electromagnetic field and has a great influence on the development of electromechanical devices in the 19th century.

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