The Italian physicist Alessandro Volta developed the first electrochemical cell in 1748. The term of "battery" according to electronic devices fundamentally appeared with Franklin in the same year in order to describe the collection of multiple electrochemical cells. In 1791, while working at Bologna University, Luigi Galvani discovered that the muscle of a frog would contract when touched by a metallic object. This phenomenon became known as animal electricity. Prompted by these experiments, Volta initiated a series of experiments using zinc, lead, tin and iron as positive plates (cathode); and copper, silver, gold and graphite as negative plates (anode) and invented the first battery also known as the voltaic pile in 1800.