Leyden ball Leyden ball A Leyden ball is a fictional bullet used in the nineteenth century Jules Verne science fiction novel, "Twenty Thousand Leagues Under the Sea". It contains a capacitance charge of electrical energy, which discharges instantaneously upon the bullet's impact. A similar, but more complex non-lethal electronic weapon, meant to disable people, has been developed for police use in the modern day. In his 1870 science fiction classic "Twenty Thousand Leagues Under the Sea", Jules Verne wrote about a hunting expedition using a very unusual form of bullet: the balls sent by this gun are not ordinary balls, but little
Twenty Thousand Leagues Under the Sea not to a "depth", as 20,000 leagues (80,000 km) is nearly twice the circumference of the Earth. The greatest depth mentioned in the book is four leagues. The book uses metric leagues, which are four kilometres each. During the year 1866, ships of several nations spot a mysterious sea monster, which some suggest to be a giant narwhal. The United States government assembles an expedition in New York City to find and destroy the monster. Professor Pierre Aronnax, a French marine biologist and narrator of the story, who happens to be in New York at the time, receives a last-minute