Talk:Time travel

Skip to table of contents

This is the talk page for discussing improvements to the Time travel article.
This is not a forum for general discussion of the article's subject.

Put new text under old text. Click here to start a new topic.
New to Wikipedia? Welcome! Learn to edit; get help.

Article policies

Find sources: Google (books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL

Archives: Index, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10: 90 days

The subject of this article is controversial and content may be in dispute. When updating the article, be bold, but not reckless. Feel free to try to improve the article, but don't take it personally if your changes are reversed; instead, come here to the talk page to discuss them. Content must be written from a neutral point of view. Include citations when adding content and consider tagging or removing unsourced information.

Physics High‑importance

	Physics portal This article is within the scope of WikiProject Physics, a collaborative effort to improve the coverage of Physics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.PhysicsWikipedia:WikiProject PhysicsTemplate:WikiProject Physicsphysics articles
High	This article has been rated as High-importance on the project's importance scale.

Time High‑importance

	This article is within the scope of WikiProject Time, a collaborative effort to improve the coverage of Time on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.TimeWikipedia:WikiProject TimeTemplate:WikiProject TimeTime articles
High	This article has been rated as High-importance on the project's importance scale.

Science Fiction Top‑importance

	Speculative fiction portal This article is within the scope of WikiProject Science Fiction, a collaborative effort to improve the coverage of science fiction on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Science FictionWikipedia:WikiProject Science FictionTemplate:WikiProject Science Fictionscience fiction articles
Top	This article has been rated as Top-importance on the project's importance scale.

Philosophy Low‑importance

	Philosophy portal This article is within the scope of WikiProject Philosophy, a collaborative effort to improve the coverage of content related to philosophy on Wikipedia. If you would like to support the project, please visit the project page, where you can get more details on how you can help, and where you can join the general discussion about philosophy content on Wikipedia.PhilosophyWikipedia:WikiProject PhilosophyTemplate:WikiProject PhilosophyPhilosophy articles
Low	This article has been rated as Low-importance on the project's importance scale.

replacement for wretched wording and markup

A colleague (who didn't take the trouble to encourage constructive discussion by even saving -- for those who care who the colleague is or when they held forth -- the trouble of searching the edit history) did add to Time travel#Tourism in time the following comment markup (to which i've added meta-markup, on this talk page, trying to make the markup display in a more intuitively clear way here):

"This picture would explain why we haven't been over run [sic]

by tourists from the future."

The colleague's concern for non-misrepresentation is praiseworthy, even tho the wording "have tried to edit" reeks too much of the Inquisition or the Klan, and the typographic travesty that is their solution may not even be appropriate for some critical edition of Hawking's works. Here -- leaving behind the pedants' concern about who (Hawking, an editor, a typesetter?) is responsible for the inappropriate internal space -- is an encyclopedia-appropriate version of the passage:

"This picture would explain why we haven't been [overrun] by tourists from the future."

It's literate, harmless, almost devoid of distraction, and not significantly better nor worse than

Stephen Hawking says that this picture would explain why our times haven't been overrun by "tourists from the future."{{cn|date=January 2015}}

--Jerzy•t 04:21 & 07:05, 3 February 2015 (UTC)

Time travel is first in Hindu mythology

According to Ramayana which writeen thousands of years ago kakbhisundi was creature who can time travel 2409:4042:4E91:7CE0:0:0:600A:9F00 (talk) 06:14, 15 November 2023 (UTC)[reply]

If you can find a review article or book that summarizes the time travel of this creature, then please add a paragraph with the reference to the article under "In culture". Johnjbarton (talk) 15:37, 15 November 2023 (UTC)[reply]

Add to the section "Mythical time travel" Johnjbarton (talk) 18:03, 15 November 2023 (UTC)[reply]

Article stretch's physics jargon to favor pop culture ideas.

Throughout this article various physical models are discussed which have time parameters moving forward or backward. The discussion in the article around these models pushes the idea that such parameter values amount to "time travel". Do these physical models allow the motion of one selected rigid body in "time" while the remainder of the universe does not follow? That is "time travel", not $t=t_{0}-t'$ . Johnjbarton (talk) 16:33, 14 February 2024 (UTC)[reply]

Semi-protected edit request on 15 April 2024

This edit request has been answered. Set the |answered= or |ans= parameter to no to reactivate your request.

FIRST TRAVELLER THROUGH TIME raM Pyramid of Universe Billirams RaM King RaM PYRAMID Al HARAM BY RaM Id 156.202.111.148 (talk) 02:01, 15 April 2024 (UTC)[reply]

Not done: it's not clear what changes you want to be made. Please mention the specific changes in a "change X to Y" format and provide a reliable source if appropriate. '''[[User:CanonNi]]''' (talk|contribs) 02:04, 15 April 2024 (UTC)[reply]

Theoretical physics

Hi, looked into this a while back. One of the arguments against time travel is the "Chronology Protection Conjecture" (S W Hawking) also known as 'Niven's law of conservation of history' and an older variant being the 'Novikov self-consistency principle' where either paradoxes are a physical impossibility, the Universe prevents them being observed in real space and time eg by event horizons or any backwards time travel only observes and not changes the past and any changes made are random chance only. The current research appears to be suggesting that superluminal particles like tachyons may "drag" very light normal matter into FTL which would in fact not invalidate the laws we already know, as that energy exchange cancels itself out at a short distance from the source purported to be cosmological likely a Blitzar. Pair production in black holes (Hawking radiation) seems to be a way to experimentally test this, and Feynman was the physicist who first suggested that one way to model antimatter is regular matter moving back in time to the moment of its annihilation. Generating an artificial event horizon in superconductors of a specific internal geometry bombarded with gamma rays at a specific energy range tuned to the elements used seems possible and I am actually looking into this possibility. 91.190.161.160 (talk) 05:30, 25 May 2024 (UTC)[reply]

Please let us know when you have some reliable references. Johnjbarton (talk) 15:13, 25 May 2024 (UTC)[reply]