Battery, 1800 For the battery we must thank the frog. In the 1780s, the Italian physicist Luigi Galvani discovered that a dead frog's leg would twitch when he touched it with two pieces of metal. Galvani had created a crude circuit and the phenomenon was taken up by his friend, the aristocratic Professor Alessandro Volta, whose voltaic cells stacked in a Voltaic pile amazed Napoleon. The pile was also the first battery, whose successors power more than a third of the gadgets on this list.
Voltaic Pile by Alessandro Volta. "A voltaic battery on the newest principle. " / Take your students on a multisensory field trip through JOURNEY TO THE CENTER OF THE EARTH by Jules Verne! Get the experiential LitWits Kit at https://litwits.com/product/journey-to-the-center-of-the-earth/