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
Live (The Mars Volta EP) Live (The Mars Volta EP) Live is the first officially released live recording from the band The Mars Volta. The EP was released in limited quantities in 2003 and is now difficult to find. Due to this, the EP has become a collectors item among fans, sometimes selling for up to $150 on eBay . The first two tracks were recorded live at the XFM Studio in London, 2003. The last two tracks were recorded at the Electric Ballroom in London on July 9, 2003. The jam in "Drunkship of Lanterns" later became part of "Cygnus...Vismund Cygnus" from Frances the