<P> Luigi Galvani, an Italian physicist, discovered something he named, "animal electricity" when two different metals were connected in series with a frog's leg and to one another . Volta realised that the frog's leg served as both a conductor of electricity (what we would now call an electrolyte) and as a detector of electricity . He replaced the frog's leg with brine - soaked paper, and detected the flow of electricity by other means familiar to him from his previous studies . </P> <P> In this way he discovered the electrochemical series, and the law that the electromotive force (emf) of a galvanic cell, consisting of a pair of metal electrodes separated by electrolyte, is the difference between their two electrode potentials (thus, two identical electrodes and a common electrolyte give zero net emf). This may be called Volta's Law of the electrochemical series . </P> <P> In 1800, as the result of a professional disagreement over the galvanic response advocated by Galvani, Volta invented the voltaic pile, an early electric battery, which produced a steady electric current . Volta had determined that the most effective pair of dissimilar metals to produce electricity was zinc and copper . Initially he experimented with individual cells in series, each cell being a wine goblet filled with brine into which the two dissimilar electrodes were dipped . The voltaic pile replaced the goblets with cardboard soaked in brine . </P> <P> In announcing his discovery of the voltaic pile, Volta paid tribute to the influences of William Nicholson, Tiberius Cavallo, and Abraham Bennet . </P>

Who invented the voltaic cell and what are voltaics cells do you use in your day to day life