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4[[quoteright:349:[[ComicBook/{{Superboy}} https://static.tvtropes.org/pmwiki/pub/images/chronoscope.png]]]]
5[-[[caption-width-right:349:[[SuperDickery And yet]] Superboy never warned Bruce about [[DeathByOriginStory going to that movie]]...]]-]
6
7->'''Vicki:''' That meant that you could just tune in and see any event in history.\
8'''Barbara:''' Do you mean... a sort of... "Time television"?\
9'''The Doctor:''' Yes, that's exactly what this is.
10-->-- ''Series/DoctorWho'', [[Recap/DoctorWhoS2E8TheChase "The Chase"]]
11
12A chronoscope or time viewer is a device that uses images that show past or future events like a television. They can sometimes also cause time travel. They are common in sci-fi, and often take different forms.
13
14Some act like cameras recording past and future events and showing what an object would look like in a different time period. Others are more like [=TVs=] and show videos and visions of the past and future. Chronoscopes are often used as plot devices, as they can often reveal various details that are necessary for the plot.
15
16Compare MagicMirror or CrystalBall, which may have the ability to show these events as well. IntangibleTimeTravel is, essentially, a more immersive variant of this -- analogous to virtual reality versus videotape.
17
18----
19!!Examples
20
21[[foldercontrol]]
22
23[[folder:Advertising]]
24* A lottery commercial shows an old man watching his younger self on a television-like device; yelling at him to get a ticket while he instead messes around with a toy sculpture that goes limp when the base is pressed. When he finally does get a ticket, the old man sighs and comments "I scared me", and potters off in his levitating chair.
25* Another lottery commercial has an equally old lady watching herself on the same device get a ticket because someone grabbed the last of the candy bars she wanted. She comments to her robot butler she never thanked him properly, to which the butler replies "[[MachineMonotone I'll-send-him-a-chocolate-bar. Ha-ha-ha.]]"
26[[/folder]]
27
28[[folder:Anime & Manga]]
29* ''Anime/PokemonLucarioAndTheMysteryOfMew'': When activated, the Time Flower shows visions of the history of a place.
30[[/folder]]
31
32[[folder:Comic Books]]
33* ''ComicBook/{{Superman}}'':
34** In a ''ComicBook/Superboy1949'' comic story (based on a script from the ''Superboy'' live-action TV series that wasn't, [[https://www.cbr.com/comic-book-legends-revealed-343/ apparently]]), Superboy flies out into space in order to make a home movie to show his friend that the friend's father was a hero during the war. Superboy goes faster than light so he can film the light coming from Earth, which shows what happened in the past.
35** In the cover of ''ComicBook/AdventureComics'' #275, teen Clark Kent is using a "Time Telescope" to show his friend Bruce that their adult selves will become super-heroes and fight crime together.
36** ComicBook/{{Supergirl}} uses her cousin's Chronoscope in ''ComicBook/ActionComics #309: ComicBook/TheUntoldStoryOfArgoCity'' to see her father's past and discover what happened to her parents after she left their hometown.
37--->'''Supergirl:''' This chronoscope can overtake light rays which left Krypton years ago! By watching the screen we can view the past!
38** In ''ComicBook/KryptonNoMore'', Supergirl uses one to show her cousin visions of their fathers' lives before they were born.
39** In ''ComicBook/TheKryptonChronicles'', Zor-El whips up a device which lets anybody relive someone else's memories by holding something belonging to that person. Later on, Superman designs some kind of camera-like device which displays scenes of the past.
40** In ''ComicBook/TheSupergirlSaga'', Pocket Universe ComicBook/LexLuthor discovers this device in Superboy's secret lab, which he uses to try viewing the future in search of Superboy. However, in his search, he ends up encountering the PhantomZone criminals who communicate to him through the device.
41** In the ''ComicBook/{{Valor}}'' book, Rip Hunter and co. are tracking and trying to shore up the cracks and alterations to the timeline using one.
42** In ''ComicBook/TheUnknownSupergirl'', Lesla-Lar's Time-Viewer lets her see into the past, but it cannot show images of the future.
43** ''ComicBook/TheGirlWithTheXRayMind'': As a battle is raging between Supergirl and the Phantom Zoners in the present day, the 31st century super-team the ComicBook/LegionOfSuperHeroes are using some sort of time-viewer device to watch their teammate's actions. Unfortunately, they cannot go back in time to back her up.
44* ''Franchise/GreenLantern'': Krona uses one to see the beginning of the universe (unknowingly altering it in the process).
45* ''ComicBook/DisneyDucksComicUniverse'': One such device kickstarts the plot of an Italian ''Disney Ducks saga'', the ''[[https://coa.inducks.org/story.php?c=I+TL+1705-AP Paperolimpiadi]]'' written in occasion of the 1988 Olympics. Scrooge comes in possession of a camera that can shows the near future (a few days). He realizes the camera's potential for making money, but of course so do plenty of other parties that try to take possession of it. The story's climax has Scrooge offer worldwide coverage of the Olympics days before they happen, [[spoiler:but a minor character destroys the camera, realizing its potential for abuse]].
46* ''Franchise/WonderWoman'':
47** ''ComicBook/WonderWoman1942'': Hippolyte's "Magic Sphere" is a disk shaped mirror that can show different points in time and space, though it is normally limited to showing earth based locals. Paula's Space Transformer is also treated as a chronoscope sometimes, though it's one that creates hard light interactive versions of the past/future on a platform rather than being a disk to look into.
48** ''ComicBook/SensationComicsFeaturingWonderWoman'': Hippolyta gives in and uses her Magic Sphere to see what her daughter has been up do during a festival held in the Queen's honor, saying she usually doesn't to afford Diana some privacy. It turns out to be a good thing since ComicBook/{{Cheetah}} is fighting Diana and gets the upper hand, which the queen's time seeing device gave her enough insight on in order for her to aid her daughter.
49[[/folder]]
50
51[[folder:Fan Works]]
52* In ''Fanfic/TheMeaningOfHarmony'', the temporally locked equilibrium in the Forge of Kindness allows the ponies to see the event which led to the Forge getting damaged.
53[[/folder]]
54
55[[folder:Film — Live-Action]]
56* The scroll in Creator/TimBurton's ''Film/AliceInWonderland2010'' that showed the history of Underland and then prophesied Alice's return and her slaying the Jabberwocky.
57* ''Film/BuckRogers'': In episode 9 Dr. Huer is revealed to have a device called the "Past-i-scope", which can replay scenes from the past that happened recently. The good guys are able to pull up a scene of Buck and Wilma getting captured on Saturn but not the one they need, the one that would determine whether or not Buck and Wilma survived their crash-landing.
58* In the Creator/DenzelWashington movie ''Film/DejaVu2006'', it's claimed that the "Snow White" technology is just an incredible complicated surveillance system. Turns out that its actually a chronoscope. [[spoiler:And when pushed, it even works as a limited time machine.]]
59* In the Bollywood film ''Krrish'', it is revealed that Rohit[[note]]The protagonist of ''Film/KoiMilGaya''[[/note]] was hired to build a computer that can see the future and show it on a screen. He tested it by seeing the birth of his son Krishna, [[spoiler:where he learned that he will be killed by his employer so that he can use it to his own benefit]].
60* In ''Film/TheInvisibleRay'', Janos Rukh has invented a telescope that can photograph light rays that will show the Earth's past. He uses it to watch a meteorite fall on Africa, thus starting the plot.
61* In ''{{Film/Paycheck}}'', the mysterious device employs the curvature of the universe and special lenses [[spoiler:to look a short distance into the future]], allowing the protagonist to build his escape plan before the beginning of the main action.
62* Lampshaded (with a healthy helping of BreakingTheFourthWall) in ''Film/{{Spaceballs}}'' with the "instant cassettes" technology: films that are released for home viewing before the movie is even done being shot. Thus, after they have lost the trail of the protagonists, the [[HarmlessVillain comically ineffective]] villains [[ShoutOutThemeNaming Dark Helmet]] and [[PunnyName Colonel Sanders]] pop a tape of ''Film/{{Spaceballs}}'' into the VCR, and fast-forward to next scene featuring their quarry in order track them. But not before first wandering into a high-strung WhosOnFirst skit.
63* In ''{{Film/Tomorrowland}}'' the protagonists use a device to look into the past [[spoiler:and future]] using Tachyons
64[[/folder]]
65
66[[folder:Literature]]
67* OlderThanTelevision: The Martians in [[Creator/KurdLasswitz Kurd Laßwitz]]' ''Auf zwei Planeten'' ("On Two Planets", 1897) have a device called the ''Retrospektiv'' which allows them to determine what actually caused an armed incident between a British warship and a Martian vessel. It sends out gravitation rays to retrieve light rays sent off into space from the event in question.
68* Creator/IsaacAsimov:
69** "Literature/TheDeadPast": This story has a Chronoscope that was developed fifty years ago. The [[OneWorldOrder world government]] has been suppressing use of the device because "the past" can be as recent as one-hundredth of a second ago. Unfortunately, our protagonists invented a cheap and simple way to duplicate the technology, and [[InformationWantsToBeFree shared it with others]].
70** "Literature/TheUglyLittleBoy": Dr Hopkins and Stasis Incorporated use [[{{Technobabble}} mesonic intertemporal detection]] to "see" the past. It works by sending meson particles backwards into time and analyzing the way they're reflected. It doesn't create clear pictures, but it's a necessary component to their TimeMachine.
71* Creator/ArthurCClarke's ''Literature/TheLightOfOtherDays'': The chronoscope, a machine to create and look through wormholes in this setting, immediately becomes public and the novel explores how society would change as a result of the complete lack of privacy and ability to know the real events that modern myths and religions are based on.
72** ''Literature/ChildhoodsEnd'' has such a device given to humans to look into their past. It causes the collapse of the world's religions.
73* The first half of ''Literature/PastwatchTheRedemptionOfChristopherColumbus'' is about two such devices. The first one was of limited use and wasn't precise enough to show people (they were seen as fast-moving shadows), but it did allow the researchers to see architecture and the like. Later, a more focused device was created, allowing very detailed images and sound to be shown. Fashions of the past became all the rage throughout the recovering world. Researchers had to learn ancient languages in order to understand what the people on the screen were saying. One case even had a PokeInTheThirdEye moment. When viewing the life of a long-dead tribal woman, the researcher is startled to hear a description of a dream she had about people from afar watching her. The researcher shows it to several colleagues, "rewinding" the event twice before continuing. The tribal woman continues that they watched her three times and even gives the correct number of researchers. The researchers are a little freaked out. While the government has told everyone that the machines can't see anything as recent as 100 years ago, in reality it can see as recently as 15 minutes ago.
74* The ''Time Machine'' stories by Donald and Keith Monroe. The eponymous time machine had a viewing device that allows its users to see scenes of the future and past before traveling to them.
75* ''Literature/{{Discworld}}''
76** On the Discworld, there are the Omni-scopes which have the power to do this, although true to form the wizards spend a great deal of time and effort trying to eliminate that capacity, treating it as a bug instead of a feature. It seems all they wanted was an expensive version of a webcam. (Omniscopes are also quite hard to focus, and since most times and places are "empty space at a time when nothing happens", that's mostly what they show. Also, using it to see the future is unwise, because it might not be the future you want, and then you're stuck with it.)
77** Also from ''Literature/TheScienceOfDiscworld'' books, Hex is able to treat our entire universe as one of these. Fast fowarding, or rewinding to see specific spots in human history (our universe canonically exists in a snowglobe on a shelf in the Unseen University, a wobbly shelf).
78* Such a device is invented in ''Literature/NoonTwentySecondCentury'', but it can only look into the past. The pictures it shows... aren't pretty.
79* In the science fiction novella ''E for Effort'', a man invents a time viewer which can see any past occurrence. It doesn't have audio, so they employ [[ReadingLips lipreaders]] to find out exactly what people are saying. Initially they use it to make films about the past.
80* ''Literature/TheFellowshipOfTheRing''. The Mirror of Galadriel can show visions of the past and the future. Sam sees events that will occur in ''Literature/TheTwoTowers'' during his and Frodo's entry into Mordor, as well as events in the Shire after Saruman takes over. Frodo sees the fall of Númenor and the founding of Gondor, which occurred in the distant past.
81* Creator/RobertAHeinlein's short story "Literature/ByHisBootstraps". The Time Gate can be used to look backward and forward in time as well as to travel to the time shown.
82* The [[PensieveFlashback Pensieve]] from the ''Literature/HarryPotter'' novels, which records and plays back memories, is a version of this. (Powerful wizards like Voldemort ''can'' falsify memories, but other powerful wizards like Dumbledore can usually tell.)
83* Mirrors that work like this are mentioned in ''Literature/SeptimusHeap''.
84* In Creator/LRonHubbard's ''Literature/BattlefieldEarth'', the heroes want to find out what happened to a planet they bombed a year earlier, and so teleport a probe a light year away from the target to effectively look into the past with a ridiculously powerful telescope. They're also somehow able to [[EnhanceButton manipulate the images and zoom in on particular cities]] after the probe has returned and they're watching the recording.
85** Creator/EEDocSmith used the same mechanism in the ''Literature/SkylarkSeries''. Somehow, his version was even able to see inside of buildings.
86* In ''Literature/MissionEarth'', also by Hubbard, the Voltarian Confederation uses "time-sights" to peer into the future in order to avoid oncoming obstacles when aboard spaceships using [[FTLTravel time-based "Will-be Was" engines]] ([[ArtisticLicensePhysics don't even ask]]). A character later has the bright idea to make millions on the stock market by looking at tomorrow's figures and investing accordingly.
87* Phillip K. Dick's short story, ''Paycheck'', employs one of these as a centerpiece of the conflict.
88* The short story "Who's Cribbing?" is about a tinkerer named Todd Thromberry who invents a way of viewing the future, which he uses to steal works of fiction from after his lifetime, pass them off as his own, and leave the real author to be accused of plagiarism. At least, so claims the guy who is accused of ripping off Thromberry's stories.
89* A chronoscope, which "does to time what a telescope does to space", is the central device of the unfinished ''Literature/SpaceTrilogy '' novel ''The Dark Tower'' (no relation to [[Literature/TheDarkTower Stephen King's series]]). The twist is that [[spoiler:rather than showing the past or future, it shows an AlternateUniverse.]]
90* ''Literature/AQuantumMurder'': The victim is a scientist who was working on neurohormones that could be used to see through time, so the investigators use a sample he's left behind to do so. [[spoiler:They see him being killed by one of his own students who has gone insane, but it's later revealed that the murderer was brainwashed to do so by the real culprit, who was worried that the neurohormone could be used to see a murder he had committed eleven years previously. Alarmed by the implications of looking back in time, Julia Evans, the idealistic but powerful CEO of Event Horizon, arranges for the destruction of the neurohormone and all records, and gives a generous job offer (of the [[AnOfferYouCantRefuse accept-or-else kind]]) to the student so [[YouKnowTooMuch she can keep an eye on him]].]]
91[[/folder]]
92
93[[folder:Live-Action TV]]
94* ''Series/DoctorWho'':
95** "[[Recap/DoctorWhoS2E8TheChase The Chase]]" features a Time-Space Visualiser which can view any event in history.
96** In "[[Recap/DoctorWhoS32E10TheGirlWhoWaited The Girl Who Waited]]", the Two Streams medical facility has a time glass that can be used by people in the Green Anchor section watching their loved ones in the Red Waterfall section. The Doctor steals it and makes some adjustments so he and Rory can find Amy, who's stuck in the Red Waterfall section.
97* ''Series/Loki2021'': The Time Variance Authority has a device with a projector that shows glimpses of one's life. The {{alternate|self}} Loki learns via this that actions of his will cause the death of his mother Frigga in ''Film/ThorTheDarkWorld''. Then later he uses the device to witness further events of his life, including his death in ''Film/AvengersInfinityWar''.
98* ''Series/TheOuterLimits1995'': In "[[Recap/TheOuterLimits1995S7E15TimeToTime Time to Time]]", the time travel agency Chrononics has a viewing portal which allows them to monitor their agents when they travel through time. Clips from "[[Recap/TheOuterLimits1995S5E12Tribunal Tribunal]]" and "[[Recap/TheOuterLimits1995S6E17Gettysburg Gettysburg]]" are used to represent these missions.
99* In ''Series/Runaways2017'', a machine is invented that exploits [[{{Technobabble}} the curvature of spacetime by gravity]] to view future events. At one point, it's used to [[OminousMessageFromTheFuture send a message from the future to avoid a catastrophe]].
100* In ''Series/StarTrekEnterprise'', the time traveller Daniels uses a device like this, while he is congratulating Captain Archer for successfully fixing the time stream.
101* The Atavachron from the ''Series/StarTrekTheOriginalSeries'' episode "[[Recap/StarTrekS3E23AllOurYesterdays All Our Yesterdays]]".
102* ''Series/TheTimeTunnel'': In addition to sending items and living beings through time, the scientists controlling the eponymous device could also use it as a time viewer to see the past and the future.
103* ''Series/TheTwilightZone1959'': "[[Recap/TheTwilightZone1959S2E10AMostUnusualCamera A Most Unusual Camera]]" has a camera that can see into the future.
104[[/folder]]
105
106[[folder:Music]]
107* In the fictional narrative surrounding the {{Music/Weezer}} album ''Everything Will Be Alright In The End,'' protagonist Joe Laffoley creates "The Futurescope," a device that lets him see video transmissions relating to his future, as a way of answering three questions about his life (The albums’s main themes). The device also gives its name to the album’s closing tracks, “The Futurescope Trilogy.”
108[[/folder]]
109
110[[folder:Tabletop Games]]
111* A malfunctioning "time-scanner" was what brought the dinosaurs to the present day in ''TabletopGame/DinosaursAttack''.
112* ''TabletopGame/DungeonsAndDragons'' has an organic, magical example in the chronolily. These [[ToweringFlower gargantuan pitcher plants]] are filled with a golden nectar that displays random, soundless images of distant events - violet chronolilies display images of the present, but orange chronolilies give visions of the past, and yellow chronolilies show the future. Some sages master an esoteric method of plucking leaves from the plant's base in a particular order to conjure up specific visions, but a faster if less effective method is to dip one's hand in the nectar, concentrate on what you want to see, and hope you get results.
113* ''TabletopGame/{{GURPS}} Ultra-tech'' describes the "timescanner". It has very limited abilities: it can only display things in a two-yard radius, it needs days to focus on the specified moment in time, and it is only available in soft science fiction settings anyway. And until a portable version is invented, the timescanner machinery occupies an entire room.
114[[/folder]]
115
116[[folder:Theatre]]
117* In ''Theatre/TheGoldenApple'', Mother Hare gives Ulysses and Penelope a glimpse of a verdant valley turned into future wasteland, and presents them with a kaleidoscopic vision, projected in the form of woodcuts and lithographs, of the spectacular scientific achievements forthcoming in the twentieth century.
118[[/folder]]
119
120[[folder:Video Games]]
121* Yeesha's necklace in ''VideoGame/MystIVRevelation''.
122* The Oracle Drives in ''VideoGame/FinalFantasyXIII2'' and ''VideoGame/LightningReturnsFinalFantasyXIII.''
123* In ''VideoGame/LegacyOfKainSoulReaver'' Raziel explores the Oracle's Cave, which was the hideout of [[TimeMaster Moebius the Time-Streamer]], and comes across a series of "windows" that show him visions of the past and future.
124* The Ghost-Hunting Goggles in ''VideoGame/DarkFall: The Journal'' does this sometimes, showing how portions of the Dowerton Hotel looked in the past, or occasional messages on the walls. Other times it's mostly used to see and talk to the ghosts haunting the place. The sequel ''Lights Out'' ups this by [[spoiler: letting Benjamin Parker use it to [[TimeTravel travel through time]] by touching certain objects.]]
125* This is ultimately what the visions provided by the Monado in ''VideoGame/XenobladeChronicles1'' are. The Monado can manipulate ether, which makes up all things in the world of the Bionis and Mechonis. All ether is calculable in its changes, so the Monado can see where every ether particle was, is, and will be, providing visions to those who can use it.
126[[/folder]]
127
128[[folder:Webcomics]]
129* The clouds on Skaia in ''Webcomic/{{Homestuck}}'' are natural versions of this.
130** The Trollian chat client is also one of these.
131* It's heavily implied that a device like this will show up in ''Webcomic/GirlGenius'' at some point... though so far we've only seen it from the "other side", as it were. At several points in the comic, strange "windows" suddenly appear hovering in mid-air, with doubles of some of the comic's characters standing on the other side, seemingly discussing what they're seeing as if they were watching events happening in their past.
132[[/folder]]
133
134[[folder:Web Original]]
135* In ''Podcast/KakosIndustries'' Corin Deeth III's grandfather Corin Deeth I uses a Predict-O-Vision device to see glimpses of what his successor is up to, being CrazyPrepared for the day he'd be succeeded as CEO of the company. He's increasingly been sending letters from around the mid 1960s to offer advice, or sometimes just to send an immature joke. Most notably, he's unable to accurately see what [[CreepyChild Belladonica]] is and urges Corin to [[TemptingFate give up on trying to open]] [[BrownNote the contraption]].
136* [[https://scp-wiki.wikidot.com/scp-6099 SCP-6099]] is a chronoscope that lets you view what an area looked like as far back in time as you want, in a fully immersive environment. (However, you obviously can't interact with anything.) [[spoiler:Thanks to this device, the Foundation [[TheUnmasquedWorld discovers something quite unexpected...]]]]
137* ''WebOriginal/WellBeRightBack'': "[[https://www.youtube.com/watch?v=t6bPA50AorY [=TeleBlue=] [=SneakPeak=] Beta (2003)]]" centers around a test of a new feature of the [=TeleBlue=] cable boxes called [=SneakPeak=], which allows the viewer to see what certain channels will look like in the future. Examples include Creator/CartoonNetwork's Advertising/CNCity rebrand from 2004, Creator/ToonDisney becoming Creator/DisneyXD in 2009, Creator/{{Boomerang}}'s 2015 rebrand, and an episode of Series/ICarly being played on Creator/ParamountPlus in (presumably) 2023.
138[[/folder]]
139
140[[folder:Western Animation]]
141* In ''WesternAnimation/{{Amphibia}}'', Leif's vision consisted of seeing events that have already be seen in the series like The Core's mural and Newtopia being destroyed a turned into a polluted wasteland.
142* One of the villains in ''[[WesternAnimation/FrankensteinJr The Impossibles]]'' is shown using this to observe 20th-century events from the 40th century.
143* One episode of the Plastic Man cartoon involved Plas thwarting a crime boss from stealing a device that can show the future.
144* The various time-windows in Clockwork's lair in ''WesternAnimation/DannyPhantom''.
145* In ''WesternAnimation/Ben10'', one of Ben's alien forms, Clockwork, can do this on a massive scale.
146* In the ''WesternAnimation/MyLifeAsATeenageRobot'' episode "Future Shock," Tuck looks into Dr. Wakeman's "future scope" and sees events in which Jenny [[MistakenForMurderer appears to]] have turned evil and killed Brad.
147* The chrono-arch in ''WesternAnimation/TheAdventuresOfJimmyNeutronBoyGenius'' is this.
148* A ''WesternAnimation/PinkyAndTheBrain'' episode sees Brain invent one of these. He sees an image of himself as a very old mouse still [[OncePerEpisode trying]] and [[FailureIsTheOnlyOption failing]] to take over the world and has a bit of a breakdown, until he realizes that what he's seeing is only one possible future rather than a guarantee.
149[[/folder]]
150
151[[folder:Real Life]]
152* The virtual reality app Google Earth VR allows anyone using it to view 360-degree points in time and can show you places almost anywhere in the world. However, you can only see as far back as 2007.
153* Wormholes in theory could be used as this. You could move one exit of a wormhole near a strong gravitational field like a black hole, and the gravitational effect will cause time to go slower in said wormhole exit than in the other; then when moving the wormhole's exit away from the gravitational field, it will retain the "time delay" and effectively become a window/portal to the past, the only caveat being that it cannot show anything ''before'' the wormhole's creation.
154* Given that the speed of light is peanuts next to the size of the Universe, when we observe it, we're using a natural chronoscope. We see Proxima Centauri as it was a bit more than four years ago, the center of our Galaxy as it was 28,000 years ago, Andromeda as 2.56 million years ago, etc., and besides more or less educated guesses, we do not know what they are like now and what happened there in the interim.
155[[/folder]]
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