History of the battery his iron scalpel, the leg twitched. Galvani believed the energy that drove this contraction came from the leg itself, and called it "animal electricity". However, Alessandro Volta, a friend and fellow scientist, disagreed, believing this phenomenon was caused by two different metals joined together by a moist intermediary. He verified this hypothesis through experiment, and published the results in 1791. In 1800, Volta invented the first true battery, which came to be known as the voltaic pile. The voltaic pile consisted of pairs of copper and zinc discs piled on top of each other, separated by a layer of cloth
NZR RM class (Edison battery-electric) NZR RM class (Edison battery-electric) The NZR RM class Edison battery-electric railcar was a popular and successful railcar that ran in Canterbury, New Zealand for eight years. The prototype, RM 6, was arguably the first successful railcar in New Zealand, but the type was not developed into a class. The railcar had a wheel arrangement of Bo-Bo under the UIC classification system, weighed , had driving controls at each end, and with an engine output of , it travelled comfortably at . In appearance, it looked like a cross between a regular railway passenger carriage and a tram; side-on, it