Timestream
Encyclopedia
The timestream is a metaphor
Metaphor
A metaphor is a literary figure of speech that uses an image, story or tangible thing to represent a less tangible thing or some intangible quality or idea; e.g., "Her eyes were glistening jewels." Metaphor may also be used for any rhetorical figures of speech that achieve their effects via...

ical conception of time
Time
Time is a part of the measuring system used to sequence events, to compare the durations of events and the intervals between them, and to quantify rates of change such as the motions of objects....

 as a stream
Stream
A stream is a body of water with a current, confined within a bed and stream banks. Depending on its locale or certain characteristics, a stream may be referred to as a branch, brook, beck, burn, creek, "crick", gill , kill, lick, rill, river, syke, bayou, rivulet, streamage, wash, run or...

, a flowing body of water
Water
Water is a chemical substance with the chemical formula H2O. A water molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at ambient conditions, but it often co-exists on Earth with its solid state, ice, and gaseous state . Water also exists in a...

. This conception has been widely used in mythology
Mythology
The term mythology can refer either to the study of myths, or to a body or collection of myths. As examples, comparative mythology is the study of connections between myths from different cultures, whereas Greek mythology is the body of myths from ancient Greece...

 and in fiction
Fiction
Fiction is the form of any narrative or informative work that deals, in part or in whole, with information or events that are not factual, but rather, imaginary—that is, invented by the author. Although fiction describes a major branch of literary work, it may also refer to theatrical,...

. This analogy is useful in several ways:
  • Streams only flow one way. Time only moves forward.
  • Streams flow constantly. Time never stops.
  • People can stand in a stream, but will be pulled along by it. People exist within time, but move with it.
  • Some physicist
    Physicist
    A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many branches of physics spanning all length scales: from sub-atomic particles of which all ordinary matter is made to the behavior of the material Universe as a whole...

    s and science fiction
    Science fiction
    Science fiction is a genre of fiction dealing with imaginary but more or less plausible content such as future settings, futuristic science and technology, space travel, aliens, and paranormal abilities...

     writers have speculated that time is branching--it branches into alternate universes
    Multiverse
    The multiverse is the hypothetical set of multiple possible universes that together comprise all of reality.Multiverse may also refer to:-In fiction:* Multiverse , the fictional multiverse used by DC Comics...

     (see many-worlds interpretation
    Many-worlds interpretation
    The many-worlds interpretation is an interpretation of quantum mechanics that asserts the objective reality of the universal wavefunction, but denies the actuality of wavefunction collapse. Many-worlds implies that all possible alternative histories and futures are real, each representing an...

    ). Streams can also diverge.


In fiction, an alternate continuity
Continuity (fiction)
In fiction, continuity is consistency of the characteristics of persons, plot, objects, places and events seen by the reader or viewer over some period of time...

 is sometimes called an alternate timestream.

Examples of the usage of timestream:
  • In DC Comics
    DC Comics
    DC Comics, Inc. is one of the largest and most successful companies operating in the market for American comic books and related media. It is the publishing unit of DC Entertainment a company of Warner Bros. Entertainment, which itself is owned by Time Warner...

    , the timestream is an invisible current that flows through the DC Universe
    DC Universe
    The DC Universe is the shared universe where most of the comic stories published by DC Comics take place. The fictional characters Superman, Batman and Wonder Woman are well-known superheroes from this universe. Note that in context, "DC Universe" is usually used to refer to the main DC continuity...

    . It is used as a way for heroes like the Linear Men, and especially Waverider
    Waverider (comics)
    Waverider is a fictional superhero in the DC Comics universe, a time traveler who was merged with the time stream. Waverider first appeared in Armageddon 2001 #1 and was created by Archie Goodwin and Dan Jurgens....

    , to travel and correct time fluctuations from time traveling supervillains who seek to alter the correct reality. The timestream was mainly used by Waverider during Armageddon 2001
    Armageddon 2001
    "Armageddon 2001" was a 1991 crossover event storyline published by DC Comics. It ran through a self titled, two issue limited series and most of the annuals DC published that year from May through October...

    , Death of Superman, and Zero Hour
    Zero Hour (comics)
    Zero Hour: Crisis in Time is a five-issue comic book limited series and crossover storyline published by DC Comics in 1994. In it, the former hero Hal Jordan, who had until then been a member of the intergalactic police force known as the Green Lantern Corps, mad with grief after the destruction of...

    events. The timestream is connected to the Speed Force
    Speed Force
    The Speed Force is a concept presented in various comic books published by DC Comics, primarily in relation to the various speedsters in the DC Universe.-Empowered:...

    , so speedster
    Speedster (comics)
    A speedster is a fictional character in superhero fiction, particularly comic books, whose primary power is the superhuman ability to perform physical and/or mental acts at impossibly high speeds. The most recognizable such superhero is the Flash...

    s are able to tap into certain points in it in order to time travel. It is possible Per Degaton
    Per Degaton
    Per Degaton is a fictional character, a DC Comics supervillain who can travel through time. Per Degaton made his first appearance in All Star Comics #35 and was created by John Broome and Irwin Hasen...

    , Chronos
    Chronos (comics)
    Chronos is the name of several fictional characters of DC Comics, both supervillains who take their name from the Greek personification of Time and have the ability of time travel and can manipulate history.-David Clinton:...

    , Vandal Savage
    Vandal Savage
    Vandal Savage is a fictional character, a supervillain published by DC Comics. He first appeared in Green Lantern vol. 1 #10 , and was created by Alfred Bester and Martin Nodell....

    , Hourman
    Hourman
    Hourman is the name of three different fictional DC Comics superheroes, the first of whom was created by Ken Fitch and Bernard Baily in Adventure Comics #48 , during the Golden Age of Comic Books.-Rex Tyler:Scientist Rex Tyler, raised in upstate...

    , Max Mercury
    Max Mercury
    Max Mercury is a fictional character, a DC Comics superhero based on Quality Comics' Quicksilver.- Publication history :He first appeared in Quality's National Comics #5, cover dated November 1940, as Quicksilver...

    , Savitar
    Savitar (comics)
    Savitar is a fictional supervillain published by DC Comics. He first appeared in Flash #108 , and was created by Mark Waid and Oscar Jimenez.- Fictional character biography :...

     and Epoch
    Epoch (comics)
    Epoch, in comics, may refer to:*Epoch , a DC Comics time-traveling character*Epoch , a Marvel Comics character, the offspring of Eon...

    , has also used the same type of time stream for time travel.

  • In the Legacy of Kain
    Legacy of Kain
    Legacy of Kain is a series of action-adventure video games developed initially by Silicon Knights in association with Crystal Dynamics. After a legal battle, Crystal Dynamics continued the series without Silicon Knights and Eidos Interactive became the publisher...

    game series, the timestream's nature (as to whether or not it can be changed) plays a vital role throughout the story.
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