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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. == Fictional description == 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:〔 (Twenty Thousand Leagues Under the Sea ), A complete, unabridged translation of Vingt milles lieues sous les mers by Jules Verne, based on the original French texts published in Paris by J. Hetzel et Cie. over the period 1869–71. Translated from the Original French by F. P. Walter. Downloadable from the Internet Archive. Retrieved 2009-04-31.〕 "... the balls sent by this gun are not ordinary balls, but little cases of glass. These glass cases are covered with a case of steel, and weighted with a pellet of lead; they are real Leyden bottles, into which the electricity is forced to a very high tension. With the slightest shock they are discharged, and the animal, however strong it may be, falls dead." In Verne's novel, the Leyden balls were fired with special rifles powered by compressed air; it was only necessary that they touch the target. It was even possible to use them to bag game flying mere feet above the waves: "I was witness to one of the finest gun shots which ever made the nerves of a hunter thrill. A large bird of great breadth of wing, clearly visible, approached, hovering over us. Captain Nemo's companion shouldered his gun and fired, when it was only a few yards above the waves. The creature fell stunned, and the force of its fall brought it within the reach of dexterous hunter's grasp. It was an albatross of the finest kind." 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Leyden ball」の詳細全文を読む スポンサード リンク
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