Electrical engineering credited with establishing the term "electricity". He also designed the versorium: a device that detects the presence of statically charged objects. In 1762 Swedish professor Johan Carl Wilcke invented a device later named electrophorus that produced a static electric charge. By 1800 Alessandro Volta had developed the voltaic pile, a forerunner of the electric battery In the 19th century, research into the subject started to intensify. Notable developments in this century include the work of Georg Ohm, who in 1827 quantified the relationship between the electric current and potential difference in a conductor, of Michael Faraday (the discoverer of electromagnetic
Sea Lion (battery-electric locomotive) Sea Lion (battery-electric locomotive) Sea Lion was a 2-foot gauge battery-electric locomotive built by Wingrove & Rogers in 1921 as works no. 313 for the Groudle Glen Railway on the Isle of Man. Together with its sister, "Polar Bear", it was intended that they would replace two Bagnall steam locos of the same names. However, the battery locos were not hugely successful, with "Sea Lion" being scrapped in 1922 following an incident where it fell down the side of the Groudle Glen. It has been proposed to build a replica "Sea Lion" at the Amberley Museum Railway, home of "Polar