The homopolar motor was invented in 1821 and presented at the Royal Institution by Michael Faraday. It consists of a battery, neodymium magnet, and a copper wire bent into a shape. A current flowing through the device creates motion. The homopolar motor can be seen in our daily lives but most of don't realize it.
How can the homopolar motor apply to real life?
The United States Navy is applying the concept of the homopolar motor to the development of a weapon called the railgun. The same concept is also applied to vehicles, cellphones, computers, everyday electrical appliances, and machinery.