Talk:Introduction to general relativity

Skip to table of contents

This is the talk page for discussing improvements to the Introduction to general relativity article.
This is not a forum for general discussion of the subject of the article.

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: 1, 2, 3, 4: 3 months

Introduction to general relativity is a featured article; it (or a previous version of it) has been identified as one of the best articles produced by the Wikipedia community. Even so, if you can update or improve it, please do so.

This article appeared on Wikipedia's Main Page as Today's featured article on April 18, 2010.

Article milestones
Date	Process	Result
July 7, 2007	WikiProject peer review	Reviewed
July 24, 2007	Featured article candidate	Promoted
September 24, 2008	Featured article review	Kept

Current status: Featured article

Physics: Relativity 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
High	This article has been rated as High-importance on the project's importance scale.
	This article is supported by the relativity task force.

Mathematics High‑priority

	Mathematics portal This article is within the scope of WikiProject Mathematics, a collaborative effort to improve the coverage of mathematics 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.MathematicsWikipedia:WikiProject MathematicsTemplate:WikiProject Mathematicsmathematics
High	This article has been rated as High-priority on the project's priority scale.

Astronomy: Cosmology Mid‑importance

	Astronomy portal This article is within the scope of WikiProject Astronomy, which collaborates on articles related to Astronomy on Wikipedia.AstronomyWikipedia:WikiProject AstronomyTemplate:WikiProject AstronomyAstronomy
Mid	This article has been rated as Mid-importance on the project's importance scale.
	This article is supported by Cosmology task force.

Spoken Wikipedia

This article is within the scope of WikiProject Spoken Wikipedia, a collaborative effort to improve the coverage of articles that are spoken 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.Spoken WikipediaWikipedia:WikiProject Spoken WikipediaTemplate:WikiProject Spoken WikipediaSpoken Wikipedia

It would be nice if there was a correct diagram.

I have been searching and searching. Finally I found that the image with the rectangular grid is completely wrong like most images which are used all over the web.

If I'm right; “Relative to an observer at rest far from a black hole, space is compressed (contracted) near the event horizon and time is stretched out (dilated).”.

This means that a grid seen from the point of view looking at the website should have smaller segments closer to the mass opposite to the image of an stretches sheet ( with larger segments ). The solution to do it right would be to show a radial sheet instead of this one.

If the above statement is correct it would also be nice to use it in the text. Everyone always states that clocks are running slow in a gravitational field but generally space is omitted and that was why I was searching. It is correct that clocks are running slow but you have to switch it around to compare it to the way we see space. On time you have to think; slow is more time ... is less grid lines is bigger cell's. Maybe as full sentence with the usual running slower;

“Relative to an observer at rest far from a black hole, space is compressed (contracted) near the event horizon and time is stretched out (dilated / running slower).”.

I believe this would make things much clearer.

The best thing would be to show images with what space does, what time does and what the world lines do in different scenarios; black hole with or without speed or rotation, object falling in with speed or without speed and light. I think that this would really clear things for people with a medium understanding.

A Commons file used on this page or its Wikidata item has been nominated for speedy deletion

The following Wikimedia Commons file used on this page or its Wikidata item has been nominated for speedy deletion:

Gravity Probe B.jpg

You can see the reason for deletion at the file description page linked above. —Community Tech bot (talk) 15:38, 30 April 2023 (UTC)[reply]

This article

This article is full of errors. — Preceding unsigned comment added by 2603:6011:8A45:6A00:29E9:1B83:6A8C:AAAF (talk) 18:14, 5 October 2024 (UTC)[reply]

Please put new talk page messages at the bottom of talk pages and sign your messages with four tildes (~~~~) — See Help:Using talk pages. Thanks.

Please list the specific errors and how they should be corrected, supported by which relevant sources. - DVdm (talk) 22:14, 5 October 2024 (UTC)[reply]

Discussion on retiring introductory articles

There is an RfC at Wikipedia Talk:Make technical articles understandable#RfC: Amending the guideline text, which includes the proposal of possibly retiring introductory articles. You're invited to join the discussion. fgnievinski (talk) 03:11, 9 November 2025 (UTC)[reply]

explain why the light gets redshifted and not blueshifted please

if the light was moving upward then the person above would be accelerating away from the light source. Since the light still moves toward them at full speed even though they accelerated away from it, then they would have to percieve things below them as being faster. So I would think the light should look blue to them. ~2025-41235-35 (talk) 20:51, 17 December 2025 (UTC)[reply]