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warp drive
Warp drive is a hypothetical faster-than-light (FTL) propulsion system in many works, most notably ''Star Trek''. A spacecraft equipped with a warp drive may travel at apparent speeds greater than that of light by many orders of magnitude. In contrast to other hypothetical FTL technologies such as a jump drive or hyper drive, the warp drive does not permit instantaneous (or near instantaneous) travel between two points but involves a measurable passage of time. Spacecraft at warp velocity can continue to interact with objects in "normal space". Some of the other fiction in which warp drive technology is featured include: ''Stars!'', ''EVE Online'', ''Earth and Beyond'', ''StarCraft'', ''DarkSpace'', ''Starship Troopers'', ''Doctor Who'', ''WALL-E'', ''FTL: Faster Than Light'' and ''Star Ocean''. The general concept of "warp drive" was introduced by John W. Campbell in his 1931 novel ''Islands of Space''.〔J. Gardiner, "Warp Drive - From Imagination to Reality", Journal of the British Interplanetary Society, vol. 61, p. 353-357 (2008)〕
==''The Original Series'': Establishing a background==
Warp drive is one of the fundamental features of the ''Star Trek'' franchise; in the first pilot episode of ''Star Trek: The Original Series'', "The Cage", it is referred to as a "hyperdrive"/"time warp" drive combination, and it is stated that the "time barrier" has been broken, allowing a group of stranded interstellar travelers to return to Earth far sooner than would have otherwise been possible. The time barrier shouldn't be confused with time dilation which occurs when approaching very fast speeds. Warp drive technology avoids time dilation.
The episode "Metamorphosis", also from ''The Original Series'', establishes a backstory for the invention of warp drive on Earth, in which Zefram Cochrane discovered the 'space warp'. Cochrane is repeatedly referred to afterwards, but the exact details of the first warp trials were not shown until the second ''Star Trek: The Next Generation'' movie, ''Star Trek: First Contact''. The movie depicts Cochrane as having first operated warp drive on Earth in 2063 (two years after the date speculated by the first edition of the Star Trek Chronology). By using a matter/antimatter reactor to create plasma, and by sending this plasma through warp coils, he created a warp bubble which he could use to move a craft into subspace, thus allowing it to exceed the speed of light. This successful first trial led directly to first contact with the Vulcans.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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