Gaston Planté

In 1859, French physicist Gaston Planté invented the lead acid battery, the world's first rechargeable electric battery and the forerunner of the modern automobile battery. His early model consisted of two sheets of coiled lead soaked in sulfuric acid, but he soon revised this design, and just a year later, he presented a nine-cell version to the Academy of Sciences. What mechanical device did Planté invent as part of his investigation into the differences between static and dynamic electricity? More...