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changed the figure 3.8 text: - From: Relativistic spacetime momentum vector - To: Relativistic spacetime momentum vector. The coordinate axes of the rest...

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books with spacetime in title E. F. Taylor and J. A. Wheeler, Spacetime Physics (San Francisco: W. H. Freeman, 1966) Caltech class: "Spacetime 101" .edu...

assumptions only conflict in a flat spacetime (or in most other spacetimes, but the whole point of M-H spacetime is that they don't conflict there). From...

An article about quantized spacetime was uploaded today. The article about spacetime has a section on quantized spacetime. Are these different concepts...

(called geodesics of the spacetime) are the shortest paths between any two events, with distance being defined in terms of spacetime intervals." This claim...

Minkowski space → Minkowski spacetime – Due to concerns raised at Wikipedia_talk:WikiProject_Physics#Minkowski_spacetime. –LaundryPizza03 (dc̄) 04:56...

relativity#SPACETIME_CURVATURE Einstein field equations#SPACETIME_CURVATURE Spacetime#SPACETIME_CURVATURE Einstein tensor#SPACETIME_CURVATURE Spacetime...

the section referencing the footnote, in this case, Spacetime#Privileged character of 3+1 spacetime. You may then have to search for a snippet of the reference...

A lot of thought went into the stop-motion graphics illustrating the spacetime diagram for length contraction. My first animation went straight through...

2008 (UTC) The main page seems to mix the Minkowski spacetime diagram and the so-called Loedel spacetime diagram (by Enrique Loedel Palumbo) freely. The very...

should there be something on spacetime compactification ? I don't know much about this, but perhaps some1 out there could contribute to this. It would...

attempting to do. "Instead, the focus [of the Introduction to curved spacetime section has been] to explore a handful of elementary scenarios that serve...

(talk) 05:25, 13 July 2023 (UTC) The article's claim that "A position in spacetime is called an event" is false and misleading. This mistake can be remedied...

flat spacetime, but understanding flat spacetime is a prerequisite to understanding curved spacetime as well as other, more complex spacetimes. We already...

Spacetime is a mathematical model that stands in opposition to absolute space and time. The melding of two categories in mathematical physics is accomplished...

resolved at this ANI. The remedy chosen by the admin was to semi-protect the Spacetime article as well as this talk page for two months; thus, the silver-colored...

"Complex Spacetime" topic, I intend to trace this history in some depth. Beginning with the little-known fact that Maxwell's ideas about spacetime were instinctively...

relativistic interpretation of spacetime. I'd like to propose that some of this be split off into an article on relativistic spacetime, leaving a summary in this...

thoughts on how WP:MOSNUM’s principles apply to some specifics of our Spacetime article. Avoid “sciencey” math notation Notwithstanding that experts in...

basic elements of spacetime are events. In any given spacetime, an event is a unique position at a unique time. Because events are spacetime points, an example...

called the "spacetime interval." Spacetime intervals can be positive, negative or zero. Particles moving at the speed of light have zero spacetime intervals...

aurantiaca (talk) 23:12, 7 July 2017 (UTC) Approximately 42% of the readers of Spacetime are reading the article using a mobile device. Remember that. Stigmatella...

would have voted in favor if I did. The page Spacetime currently has 10,955 words. The new page Curved spacetime is 3,115 words. According to the general...

the exact solutions book, and Hawking & Ellis, Large Scale Structure of Spacetime, which all offer useful introductions to congruences, expansion, and vorticity...

Wikipedians, I have just added archive links to one external link on Spacetime. Please take a moment to review my edit. If necessary, add {{cbignore}}...

I think this description: "An asymptotically flat spacetime is a spacetime in which the metric approaches the Minkowski metric very far from the gravitating...

their physical interpretations should be stressed. Maybe examples of spacetimes with certain symmetries should be stressed, along with conservation laws...

It's true that general relativity dictates that spacetime be dynamic. But nowhere in this article is any use made of that assumption. It seems pretty...

definition of global hyperbollicity in reference 1 does not apply correctly to spacetimes with boundary. In this case the condition has to be taken for the interior...

see Talk:spacetime curvature...

(talk•contribs) 20:47, 15 November 2007 (UTC) I suggest renaming this article to “spacetime topologies”, because there is at least two (generally even three) topologies...

Dirac equation article suggests people are not happy with the curved spacetime formulation in the original article and should have a separate dedicated...

for math derivations about spacetime; 2) not a math essay, forum, manual, or repository of calculations to interpret spacetime; 3) not a math journal or...

would make sense to move gravitational singularity to here. Some of the spacetime singularities discussed there (conic singularities) aren't strictly gravitational...

treated with common sense, and occasional exceptions may apply." The Spacetime article, far more than other articles on Wikipedia, binds main article...

themselves can refer to many things, for example, curves, hypersurfaces, spacetime intervals and so on. I might try and deal with this if I have the energy...

compiled a lot of research on this topic which I will update this page with. Spacetime Studios I believe, based on this information, sits as an exemplar of this...

formulae, but this standard "expression" is the wrong way (contraction!) in spacetime, that's why I retracted to "perceived" (we agree upon STR being counterintuitive)...

in the literature, but a metric tensor is a tensor field on a spacetime, not the spacetime itself. Since it is so easy to use less confusing terminology...

In sect. "sources of spacetime curvature" one reads: "In Newton's theory of gravitation, the only source of gravitational force is mass". This is not...

the most important information needed to describe the spacetime mathematically) for each spacetime, and this information is not collected anywhere else...

conventional developments a matrix representation for the Clifford algebra of spacetime is introduced and the space of column vectors on which these matrices...

believe that spacetime is quantized in the sense that this article is described. Today, physics is perfectly consistent with a continuous spacetime in which...

Hawking does not "deride" The Large Scale Structure of Spacetime in A Brief History of Time; he merely points out that it is not intended for laymen....

fundamentally a property of the spacetime continuum. The way light propagates in spacetime is a property of spacetime. It would be very awkward, for example...

world line, spacetime, and spacetime diagram, and delete from this article. M∧Ŝc2ħεИτlk 19:04, 9 January 2016 (UTC) Actually not spacetime but Minkowski...

that cryptic phrase: "(-,+,+,+) signature" Most people get the idea of a spacetime created by adding a time dimension to the 3 space dimensions (although...

outside of spacetime). catslash (talk) 14:35, 10 March 2026 (UTC) yes these are some of the problems with talking about spacetime waves. Spacetime is local...

29 March 2005. A metric of a Lorentzian 3+1 spacetime should allow positive, null and negative spacetime paths. The present version presents a coordinate...

(talk) 23:07, 8 January 2008 (UTC) Has Quantum field theory in curved spacetime been confirmed by experimental evidence ? and which experiment? 222.252...

way so far as I know to grasp the connection is to understand that a GR spacetime consists of a patching-together of a continuum of inifintesimal local...

discussing the genesis of spacetime in early July when… Would instead be lke this: We were discussing the genesis of spacetime (click here to skip to that...

curved spacetime and accelerations in flat (minkowski) spacetime. In curved spacetime, if you look at any non-infinitesimal region of that spacetime, you...

closed timelike curves. Rather, it is based on the geometry of ordinary spacetime. Any FTL path is by definition outside the future lightcone of its originating...

and time, but had not formulated the whole mature concept of an unified spacetime. Incas did. Raoul NK (talk) 10:02, 30 September 2011 (UTC) "World line"...

just be the curvature of spacetime around massive objects, and leave it at that? Particles follow spacetime. Said spacetime is being curved because of...

The long section "Technical discussion of spacetime" is out of place here. The article topic is not "spacetime". I found only four sentences with sources...

guess it really depends on the context you use it in. As a model for flat spacetime one should properly think of it as an affine space. As the set of momentum...

causal loop in the context of time travel or the causal structure of spacetime, is a sequence of events (actions, information, objects, people)[1][2]...

misleading in one important respect. The Alcubierre spacetimes are a certain family of Lorentzian spacetimes, but they are not solutions of the Einstein field...

mathematically codified by the procedures of calculation in Minkowski spacetime and associated diagrams. Therefore we have one system with various consequences...

flat spacetime, like... (1+1)D constant proper acceleration. (3+1)D constant proper acceleration. rapidly spinning rings in space. curved spacetime, like...

holds the particles in their invariant constellation, "jumps" into 4D spacetime only as quanta, how Max Planck—by calculating the electromagnetic field's...

through spacetime, but rather as a feature of spacetime itself."(Universe); That observation would be a necessary feature also of spacetime; thanks....

A worldline, by definition, is a path (curve) in spacetime. Worldlines may be timelike, null or spacelike. Material particles have timelike worldlines...

curved spacetime" which DMS. Accelerated frames are extremely useful in many spacetimes, including Minkowski vacuum and also various curved spacetimes. Also...

Minkowski spacetime, as it is about space and time and not just space. Having it be only space makes it seem like it's about space instead of spacetime. ~2026-31729-09...

Ellis, "The large-scale structure of spacetime". The Misner spacetime is a simplification of TAUB-Nut spacetime which maintains the main properties. The...

Substituted at 21:39, 26 June 2016 (UTC) Einstein treats spacetime as an unseparable entity. So, it's spacetime. — Preceding unsigned comment added by Koitus~nlwiki...

the spacetime structure." it is referring to the Causal structure of spacetime. See also Spacetime topology, or the topological structure of spacetime Local...

trampoline like fabric, has been depicted at many places to explain warp of spacetime. It is not correct example. For a sphere on trampoline like fabric it...

introduced special relativity (even though without using the techniques of the spacetime formalism) in its modern understanding as a theory of space and time....

subgroup, new article on spacetime holonomy (groups, classification of spacetimes etc.) . integration by parts in curved spacetimes, nonlocality of gravitational...

of objects in a spacetime. The article does not clarify, where "time" comes from, nor does it clarify how this notion of (spacetime) acceleration is...

(UTC) Spacetime curvature is equivalent to the gravitational gradient (tidal acceleration); it is measured with a gravity gradiometer. Spacetime curvature...

agreed upon by modern relativists is that SR deals with flat spacetime, GR with curved spacetime. I've fixed the error in the lead, and I've added references...

that one event precedes another, or that there is a pattern throughout spacetime in which events of one similar type tend to correlate with events of another...

is confusing, and found this comment thread. The coordinates are for spacetime, so the origin is defined as (0, 0, 0, 0), which includes t=0. Saying...

Schwarzschild coordinates can be used for any static spherically symmetric spacetime. The defining characteristic of these coordinates is the fact that the...

form but belong to different coordinate systems, they impose different spacetime geometries. Thus we have generated a second distinct solution!" It is...

it makes the lead too long. I assure those who support the Minkowski spacetime approach that I do understand its significance -- After all, my primary...

decoherence of the different localities and temporalities in the wider spacetime. interpretation 2: The expansion of the universe is the result of the...

multidimensional limit referred to in the document("Limits on the number of spacetime dimensions from GW170817" - https://arxiv.org/abs/1801.08160) is about...

interpreted as a text presenting spacetime from first principles. Mathematicians have been included since spacetime is a mathematical construct, relying...

Is spacetime a pseudomanifold, because of the pointy end of the light cone around an observer? Maybe the article could address that. Thanks....

automatically mean that curved spacetime also has to reduce to flat-spacetime physics. The condition of flat spacetime might instead be the limit a which...

SR, as promulgated by Einstein after 1910, is the physics of Minowki spacetime. There is no Einstein version and Minkowski version. Dypteran 16:40, 30...

substituted the paragraph using the tool of hyperbolic-orthogonality in spacetime theory with a link to another that is not technically useful. I have restored...

14 May 2011 (UTC) Added game fact box. Removed discussion of Spacetime Engine to Spacetime Studios page. Will edit description to add neutral tone and...

one type of horizon, but there really is just one absolute horizon per spacetime (though it may be topologically disconnected, it doesn't depend on the...

particular type of spacetime, while the motion of light around a rotating star may be described in another type of spacetime. [Citation?] A spacetime is the union...

about "Spacetime Daoyu"? It is frequently used and not confusing. Викидим (talk) 03:53, 14 May 2024 (UTC) @Викидим Regarding the name "Spacetime Daoyu"...

represent coordinate system imposed on the curved spacetime which would be rectilinear in a flat spacetime I simply don't understand this at all. This paragraph...

equations at all, they are simplified pictoral representations of 4D spacetime manifolds that are conformally equivalent to the actual manifold of interest...

as corresponding to a variation in the extent of the compactified 5th spacetime dimension in a K-K theory. Does the graviphoton have a similarly intuitive...

because of different time concepts of cosmos and relativistic spacetime. GR's spacetime is an abstraction, mathematical theoretic model. There ain't any...

Geometric phase for a neutral particle in rotating frames in a cosmic string spacetime. Physical Review D—Particles, Fields, Gravitation, and Cosmology, 80(2)...

dimensions of hyperspace (hs)" + the 4 common dimensions = 11 dimensions of spacetime... 7D hs + 4D = 11D st - Ben Franklin 71.206.87.9 (talk) 13:55, 19 May...

at spacetime as someting more tangible (--see article Spacetime: "The term spacetime has taken on a generalized meaning beyond treating spacetime events...

exist (according to that view), and spacetime is more fundamental than a particular universe cycle. Infinite spacetimes exist (Max Tegmark), and they're...

what an "event" is, you can't understand the geometry of spacetime." - The Future of Spacetime, Norton 2002 Sure wish this wasn't a stub. 24.68.241.38...

please to make it a bit larger? I am going to use your diagram against spacetime concept and relativity in Einstein's incarnation, so that would be fine...

a ball (representing an ordinary quantum particle in four-dimensional spacetime) colliding with a wall." Wait — readers are expected to know what "the...

also an invariant, generated by a variant of the metric signature of spacetime. Rationale: Making Δ x {\displaystyle \Delta x} and Δ t {\displaystyle...

quoted from White; in context he means "almost light speed." However, the "Spacetime Physics" (Taylor and Wheeler) graph I copied from a different Wikipedia...

AdS spacetime, but an AdS spacetime with identifications as well. This is because the field equations only refer to local properties of spacetime and...

gravitational sources, but can we include things like the curvature of spacetime itself ? (as it has an energy - albiet difficult to locate precisely -...

conservation of energy? Conservation of energy is not well-defined in curved spacetime, since the stress-energy tensor does not transform cleanly under change...

all spacetime (volume element d4x), and I infer Lagrangian, unadorned, refers to an integrand over a timelike path (time elment dt) in spacetime. (5)...

ISBN 9780812695076, and sections 1.6 and 2.1 of http://plato.stanford.edu/entries/spacetime-iframes/ But, thinking about it, it might also be simply a tautology.--...

The reference here must be more specific to eliminate that view. The spacetime conformal group does include the Lorentz group, but the indefinite planes...

gravitational waves. I guess this means this thing would be some ripple in spacetime that can travel around without getting weaker? Jurjen B (talk) 12:03,...

(Lorentz violations currently are no less conjectural than are 10 or 26 spacetime dimensions). — Preceding unsigned comment added by 217.252.162.207 (talk)...

(tensor indices from 0,...,3), distinguish notationally between space and spacetime indices, explain that more generally, weak field limits can help one identify...

The noncommutative spacetime of this article is NOT the only possible choice for noncommutative quantum field theory! Phys 05:05, 11 Aug 2004 (UTC) You're...

fields, the commutation relation vanishes between any two observables at spacetime points within the light cone. As we know from elementary quantum mechanics...

Moon, thank you. This talk page is "for discussing improvements to the Spacetime article. This is not a forum for general discussion of the article's subject...

about certain observers? (Which ones?) Or what's special about certain spacetimes? (A-S ultraboost of the Schwarzschild vacuum, versus other ultraboosts...

Schwarzschild metric. Note that other coordinations of Schwarzschild spacetime (such as Kruskal-Szekeres coordinates) are also referred to as "coordinates"...

some snapshot of how things are, but a whole, possibly matter-filled, spacetime. It describes the state of matter and geometry everywhere and at every...

particles, which might preserve their properties by changing their local spacetime geometries. With this the geometry becomes dynamic and an integral part...

subjectivity of Kant’s main critique. According to Einstein, objective spacetime can be bent and stretched like a handful of clay. You can take a piece...

Kerr-de Sitter lambdavacuum. See the arXiv for usage of Kerr-de Sitter spacetime or whatever. Lambdavacuum is an unfortunately nonstandard term for a standard...

guidelines on contributing see Wikipedia:WikiProject Ecoregions and meta:spacetime DTD and meta:ecoregion DTD-— Preceding unsigned comment added by 142.177...

other three interactions. Such a theory would not alter the curvature of spacetime aspect of gravity just give a different way to calculate it. Johnjbarton...

that "torsion fields are just a bunch of nonsense". The idea of twisted spacetime is an interesting research topic and has almost nothing to do with this...

quantum field theory allows a reentry of a relativistic ether; namely, spacetime is the seat of potential observables, i.e. it is a tectured medium....

mathematical term for spacetime is a four-dimensional manifold." This needs to be corrected slightly as it makes it sound like spacetime and manifolds have...

com/0803/spacetime.shtml to http://www.analogsf.com/0803/spacetime.shtml Added {{dead link}} tag to http://avidbookreader.com/2009/01/18/review-the-spacetime...

forces acting on particles which wordlines deviate from geodesics in spacetime. So if you don't have any strong argument that suports an idea of "attraction"...

distances that are spacelike, lightlike or timelike, but intervals—see Spacetime#Spacetime intervals. The interval is Δσ2, which in this case, for this particular...

fictitious - they are associated with real intrinsic distortions of the spacetime metric, that exist for all observers. So ... If we rotate, we experience...

(2006-08-16). "Matter collineation classification of Bianchi type II spacetime". springer.com. Retrieved 2019-07-11. Robman94 (talk) 20:10, 11 July 2019...

The general relativity doesn't call for the curvature of spacetime. Besides, the spacetime has to be flat if the 4-momentum of a particle is to be uniquely...

This is nonsense. Mass bends spacetime. Object would still be subject to relativistic effects. (unsigned 210.55.240.194) Providing more information than...

make the spacetime writing and/or reading easier to understand, a person can define the direction of writing and/or reading as a spacetime vector(s)...

light cone. In these examples the explosions and reactions represent spacetime events and the causal influence they exert upon each other. I hope Einstein...

"Noether's theorem states that all conserved quantities are related to spacetime symmetries" which is clearly wrong. It is the opposite. All continuous...

More precisely it is a transcendental bijection of the spacetime continuum, an asymptotic projection of the Calabi–Yau manifold manifesting itself in...

"secular"; while the third just seems to be an enumeration of random concepts (spacetime, cyclical history, angst) and expressions that can be associated with...

geometry of Minkowski spacetime, (ii) it cannot be extended in any reasonable manner to non-orthonormal bases in flat spacetime, and (iii) it cannot be...

mean something different (that gravitational acceleration due to curved spacetime and acceleration via application of an external force produce identical...

Universe has at least three dimensions of space and one of time. This spacetime appears to be smooth and simply connected, and space has a minimal curvature...

supersymmetry article. Extensions may be possible, such as looking into spacetime solutions of this such as black hole solutions. OpenScience709 (talk)...

loop, which is not possible in space with symmetric metric tensor of spacetime. That's why Einstein was forced to propose non symmetric metric tensor...

causing the past). One issue that would appear to be important is whether spacetime is quantised, and hence whether 'instants' of time exist (as this enables...

hyperslice, at least not without knowing the entire future history of the spacetime model. Technically speaking, we say they are inherently a global concept...

am i wrong if i'd suggest to replace "space" by "SPACETIME" in many places, f.e.: Loop quantum gravity (LQG) is a theory that attempts to describe the...

mind) as mathematical objects go. What is meant is to create a region of spacetime that obeys (i.e. is described by) the Kerr metric. 2A01:CB0C:CD:D800:146A:4BE3:750D:CFE7...

predicted interior of a black star will be composed of this strange state of spacetime, with each length in depth heading inward appear the same as a black star...

suggests that spacetime is curved by the tensor - but, in a way, maybe this is ok, as the spacetime is an abstraction, as is the tensor, so 'spacetime is curved...

in as simple a language as possible (e.g. avoiding jargon like "flat spacetime") before going on to the more technical definition. So even an absolute...

relaxation of the curvature of spacetime after the Milky Way galaxy has moved through it. As the mass moves, the distortion of spacetime is relieved in the region...

implies that spacetime be non-Euclidean: indeed, the paradigmatic geometrical interpretation of special relativity, Minkowski spacetime, is Euclidean;...

In the second paragraph "...is appropriate only when the underlying spacetime manifold M {\displaystyle {\mathcal {M}}} {\mathcal {M}} is closed, i.e...

paper demonstrates that a local and deterministic process governed by spacetime geometry can perfectly reproduce the EPR correlation and automatically...

article. It seems to me the article should link into the article on "spacetime". Unless someone else feels a great need to do this before me, I'm on...

60 16:57, 15 December 2005 (UTC) The disambiguation page has a link to Spacetime, which is the correct name for what you are referring to. Saying that...

(UTC) What about the "fabric of space" or "fabric of time" or "fabric of spacetime"? I don't really know what these terms mean but I hear them thrown around...

Hestenes's work on QM using geometric algebra, algebra of physical space, spacetime algebra etc. to provide geometric interpretations of the factors of i...

"SpaceTime Mathematics, is the most powerful cross-platform mathematics software ever developed. With real-time 2D, 3D, and 4D graphing and MobileCAS...

has been altered to an exact copy of the episode guide#13 in Cosmos: A Spacetime Odyssey. The logical course would be that this article's summary paragraph...

implications—particularly the notion of a single entity appearing across all of spacetime—have been interpreted by some as suggestive of monotheistic principles...

agree. The whole section "Acceleration is perpendicular to velocity in spacetime" should be removed, as well as "Gravitational forces" section. The current...

displacement. Now when we start talking about translation related to spacetime considerations, we complicate the issue considerably by throwing in all...

and some simple exact solutions in general relativity such as a pp-wave spacetime references should include Stephani, Differential Equations: their Solutions...

I'm told that the concept of a body containing all mass, energy, and spacetime in the Universe would be compressed to an infinitely dense point is dead...

bit like that, but I think he and Troy are clearly dressed as Inspector Spacetime and Constable Reggie. --Hunocsi (talk) 00:28, 24 February 2013 (UTC) Hi...

has a corresponding mental object. The mental object does not exist in spacetime, as the physical object does, it is an idea or experience, which esists...

or light, despite its historical origins. I think Taylor and Wheeler's Spacetime Physics must have it and would be a good reference, but I do not have...

cotangent bundle of space of generalized positions. In field theory, M is the spacetime manifold and the target space is the set of values the fields can take...

canonical classical mechanics (i.e. Hamiltonian mechanics), we need to break spacetime up into space and time (see chapter 1.1 of [2]). This has caused some...

about whether this is to mean: There can be black holes, e.g. region in spacetime from which escape is impossible. Sanders muc 21:57, 16 May 2004 (UTC)...

or disappearing spontaneously in spacetime due to the most basic laws of conservation, hence, no area in spacetime is devoid of potential addition or...

analysis. But he did not take to heart the fusion of L and T in Minkowski's spacetime: "Henceforth, space by itself, and time by itself, are doomed to fade...

really big objects, like planets and stars, actually warp the fabric of spacetime, which results in a gravitational pull capable of slowing down time. Thus...

pulses of this wave. For a massless excitation propagating at c, the spacetime interval is null, ds^2=0, implying zero proper time \Delta\tau=0 and zero...

space-time. This doesn't even make sense. The author appears to be confusing spacetime with "hyperspace". Only the latter is a widely used concept in physics...

sleight of hand in your discussion of the equations of motion: the target spacetime metric magically becomes Minkowski! We only get nice free field theories...

against the object creating the local curvature in spacetime). The effect is much larger than spacetime swimming, because the movement through the curved...

between special and general relativity is the one between flat and curved spacetime (not the generalization from inertial frames to accelerated ones, as Einstein...

background independent in a fairly trivial sense: they are independent of the spacetime metric (thought of as a background gravitational field), but they do not...

usually nmeans just a simultaneous solution to the sourcefree (curved spacetime) Maxwell EM field equation and Einstein gravitational field equation,...

Weyl-flat (i.e., conformally flat) spacetimes. Now, it is not exactly true that there is no light bending in such spacetimes (there is matter, after all)....

but with the solar system itself magicked away, and so not distorting spacetime locally, by its mass. The term "co-moving" is the right one to use here:...

or not depends on your assumptions. Several spacetime geometries allow you to move a patch of spacetime at FTL speeds relative to the universe around...

I just undid part of a edit by JRSpriggs replacing all occurrences of spacetime with space-time. Both forms appear. (Both have about 6 million hits on...

wouldn't every form of energy curve spacetime? Heat energy should curve spacetime. Sound should curve spacetime. All via mass-energy equivalence. I feel...

but for type I they also appear perturbatively in flat 10d Lorentzian spacetime. This is because D-branes are non-perturbative objects so if we consider...

have changed the units of time from meters to seconds in the "Physics in spacetime" section. I have also made a number of other changes to try to use contravariant...

affect the spacetime itself. So a photon passing the Sun is deflected because the spacetime has become curved. Also, since the fabric of spacetime is somewhat...

derivation, assuming flat empty relativistic spacetime, only generates results for flat empty relativistic spacetime. As soon as we add realistic matter possessing...

RECENT COSMOLOGICAL EVIDENCES : A PRELIMINARY COMPARISON Non–Relativistic Spacetimes with Cosmological Constant Mechanics and Newton-Cartan-Like Gravity on...

guidelines on contributing see Wikipedia:WikiProject Ecoregions and meta:spacetime DTD and meta:ecoregion DTD Can anyone provide details on the Lovat/Lovat'/Lowatj...

What if instead of gravity tearing rubber sheet spacetime into a wormhole, gravity rather folds spacetime into a two-dimensional 'soap bubble daughter universe'...

Alcubierre drive and Alcubierre metric into a new article called warp drive spacetimes. See the talk pages for those two articles. "Bubble velocity" is not a...

relativity, hyperbolic geometry is used as a non-Euclidean geometry of spacetime, in particular in the hyperboloid model presented by Herman Minkowski...

misconception). It's not a quantum theory of spacetime but a spacetime theory of quantum theory (QM/QFT). Spacetime is not the result but the cause. For correct...

is an indirect isometry. The resulting chirality definition works in spacetime. Now, this text is pretty opaque. It tells us that a definition exists...

mechanism by which we study it. Here, spacetime. We speak of spacetime both ways and risk a muddle. We risk making spacetime the new luminous aether, a medium...

specifically about some mathematical objects and not necessarily about spacetime. In other words, many people have thought what you wrote down, and I personally...

spaces? (2) There is now a section on general relativity. So, in general, "spacetime" in general relativity is some solution to Einstein's equations, and these...

to spacetime curvature. When a mass is accelerated, this information must be propagated through spacetime as a corresponding change in the spacetime curvature...

random data. - EOW branes are boundary branes that effectively terminate spacetime in extra-dimensional constructions. They appear in a variety of string/M-theory...

the article to reflect more standard usage in the field. In particular, spacetime indices should be greek letters, and the Einstein tensor should have the...

own set of Einstein field equations. That's kinda like having 'parallel spacetimes', one with positive and one with negative masses, which can still interact...

without change throughout the experimental region being studied - that spacetime is "flat" and "absolute" in the sense that lightspeeds are assumed to...

engages theories such as Heisenberg’s uncertainty principle and Einstein’s spacetime hypothesis to support his argument showing how both ideas depend upon...

2015 (UTC) In this episode Brian Cox talks in great detail that space (spacetime?) itself, at the event horizon, is flowing into a black hole. This clearly...

counts. The first is that it asserts that there are special points in spacetime ("When the Sun shines upon Earth, 2 - major Time points are created on...

tational-waves-found-spacetime-science/ to http://news.nationalgeographic.com/2016/02/160211-gravitational-waves-found-spacetime-science/ Added archive...

to spacetime is an operative factor. That is what the helical worldline animation is about. The red ship is accelerating with respect to spacetime, and...

parameter is currently increasing; see deceleration parameter for details. Spacetime has unsourced sentences. Support of life is just a few sentences with...

reality is just only being edged into...the fact is we can't see beyond spacetime because we are living there. But Imagination and intuition are wonderful...

Carroll (2019) Something Deeply Hidden: Quantum Worlds and the Emergence of Spacetime Dutton. Hugh Everett III (1957) "Relative State Formulation of Quantum...

with all experiments and observations of spacetime events both close and as far away as possible from the spacetime event called human civilisation, is generally...

simple scalars, and that its singular behaviour tends to coincide with spacetime (noncoordinate) singularities. But what is it's original motivation, and...

pseudo-Riemannian metric, I'm not sure what you consider standard topology of spacetime.Rgdboer (talk) 20:47, 19 August 2009 (UTC) Hi, you said on that page that...

'drainhole' is” - Not only is this a poor way to think about four-dimensional spacetime geometry, but it’s also not written in the proper tone for reasons I hope...

of it as 3 separate space and 1 time dimension, or of 4 dimensions in spacetime. It's not just a convenience. Einstein showed in particular that there's...

places by him, such as in his Stochastic Quantum Mechanics and Quantum Spacetime (1984) (https://link.springer.com/book/10.1007/978-94-009-4492-3) as Hegerfeldt...

you are trying to make some sort of point by having it there, such as when going to curved spacetime. OpenScience709 (talk) 21:43, 12 April 2026 (UTC)...

3 June 2008 (UTC) In order of importance: replace 4D with 4-space or spacetime: The use of the term 4D implies that the time dimension has the same properties...

Configuration is not correct. The x and x' axes to not coincide in 4D spacetime. The x axis has a component in the t' direction, and the x' axis has a...

relationalist about spacetime (spacetime not an object but just a system of relations among events) and a conventionalist about spacetime determinations (e...

(in higher category theory, or for points in 1+1-dimensional Minkowski spacetime, etc.), and the meaning in this article is not the preeminent one. My...

anywhere. Extra curvature term in the co-variant formulation in curved spacetime? My understanding was that this was forbidden by the Strong Equivalence...

Lorentz transformation has determinant equal to one, thus conserving spacetime volumes. Does anyone have more information on this subject? So far as...

changes they will go there. 201.58.120.70 02:05, 9 August 2006 (UTC) "The spacetime coordinates continue to be publicized prominently and indefinitely, so...

very difficult to be precise here without talking about curvature of spacetime and so on). Just as a light beam gets no faster as it nears a heavy object...

enough, the same Friedmann-Lemaître-Robertson-Walker geometry or 'flat' spacetime as in the rest of the observable universe. source:https://jila.colorado...

energy-momentum tensor that necessarily affects the Riemannian curvature of spacetime. While from the perspective of the bullet, the buoyant force is exerting...

examples of congruences with zero and nonzero vorticity in flat and curved spacetimes, explain therein the relation to locally non-rotating and to fluid dynamics...

the intro "Spacetime can be viewed as a 2D surface". As I understand it, this is meant as an analogy: Just like a 2-dimensional spacetime allows for wormholes...

singularity is removed and the Big Bang functions like any other point in spacetime. I don't doubt this, but it is just an incredibly interesting statement...

potentials (used in doran, lasenby, gull, somaroo & challinor (2005) spacetime algebra & electron physics). see also (gsponer & hurni (1998) lanczos-einstein-petiau:...

http://upload.wikimedia.org/wikipedia/commons/thumb/2/22/Spacetime_curvature.png/250px-Spacetime_curvature.png Is inacurate, as the gridding should converge...

versus semi-Riemannian manifolds clarify flat versus nonflat spaces, spacetimes better examples (give range of coordinates, specify whether any functions...

the spacetime expansion, linked from the article. There wasn't a black hole in an empty spacetime when everything was at a singularity -- spacetime itself...

assumed a spacetime structure weaker than Minkowski space. Please define Zeeman spacetime. I asked if you can tell me Zeeman's definition of spacetime for which...

a metric tensor (defined as a rank 2 covariant tensor) for a specific spacetime (say exterior Schwarzschild) and write it's components as g a b {\displaystyle...

article (EM in special relativity) with Maxwell's equations in curved spacetime (EM in general relativity). If you need to replace "manifestly covariant"...

in their original paper. Where did they say this? Since the external spacetime metric is identical between a Gravastar and a classical black hole they...

constraints on motion are basic natural philosophy. The fused unit LT for a spacetime plane leaves out the other dimensions of life, presumably two of space...

wrote it). I didn't want to say that coordinate systems cover all of spacetime since that isn't always true, but people do (I think) commonly think that...

have to be, and wouldn't every dust particle be spread arbitrarily upon spacetime due to the effect, so that once you put any matter inside this hypothetical...

fundamental laws such as those outlined in quantum field theory in curved spacetime and information theory. The laws of physics that govern the universe are...

These are also the units of a temporal plane in spacetime. In fact, the Lorentz transformations of spacetime are those that preserve this unit. Another context...

(talk) 05:54, 6 June 2011 (UTC) As far as I know in the rotating cases the spacetime does _not_ admit closed timelike curves. Otherwise this surely would have...

B are necessarily simultaneous because they are at the same point in spacetime, it does not imply that the invasion and the planning that causally precedes...

increasingly disordered as time progresses. It would appear that, in a Flat Spacetime Geometry (Euclidean), that Entropy always increases in this theory (and...

pressed monoquark (breaks causal relationship inside this spacetime) produces new spacetime in order to maintain causality (in the Lorentz transformation;...

an illusion caused by the fact that spacetime itself is not flat. This follows from the idea of curved spacetime and Newton's law of inertia if extended...

solution" terminology is a little confusing, but it is supposed to refer to a spacetime consisting entirely of circularly polarized gravitational waves. Teply...

relevant to cosmology, so it would usually by pretentious and a waste of spacetime to cite it. If the example refers to the 1916 paper laying out the foundations...

assumption of SR experts that we need something different, like this SR 4-D spacetime continuum, makes it all funny and silly and unscientific. Thank you for...

June 2016 (UTC) If anyone is interested, here are a few extra citations: Spacetime foam by Stephen Hawking (from Nuclear Physics B, Volume 144, Issues 2-3...

defined to have anti-gravitational properties. If big mass objects curve spacetime and creating gravitational field, that means white holes should have negative...

get home. YohanN7 (talk) 11:47, 28 January 2016 (UTC) In flat spacetime, the spacetime manifold can be identified with the tangent space at any event...

will be curvatures of all 3 spacetimes, yet not in the direction of their own spacetime for two of those three. Our spacetime is thus bending and curving...

no force of gravity. Instead gravitation occurs due to the effects of spacetime curvature. Becuase of this, I am rewriting some GR-related pages to describe...

data is inarguably some of the highest quality data when it comes to spacetime measurements (http://en.wikibooks.org/wiki/Basic_Physics_of_Nuclear_M...

5332. Li, Y.D., Modesto, L., Rachwal, L. (2015). Exact solutions and spacetime singularities in nonlocal gravity. JHEP 1512, 173. DOI:10.1007/JHEP12(2015)173...

existence of "attractive gravitational force" (objects take geodesics in spacetime so the "gravitational attracttion" is superfluous) → {\displaystyle \rightarrow...

is. Fortunately, as cosmologists assure us, a consistent foliation of spacetime is possible. That is not quite the same as a stack of subsequent presents...

regions near where matter is present." Isn't this statement incorrect? Flat spacetime is NOT Euclidean since the metric is not positive definite. 151.201.134...

rse_Tidal_Effects%2C_a_short_essay_on_some_thoughts.html Wouldn’t the spacetime containing the matter itself “spaghettify”? Therefore how would an astronaut...

referred to... A gravitational singularity, spacetime singularity or simply singularity is a location in spacetime where the gravitational field of a celestial...

quantum gravity will be needed to explain how it escapes the screwed-up spacetime behind the event horizon, but the graviton has no issue escaping a gravitational...

with each other. This allows us to think of gravity as a curvature of spacetime doesn't really help the desired audience, I think. "Tests for flatness"...

surprise. SR works for vanishingly small spacetime curvature but relativistic velocities; GEM works for moderate spacetime curvature but nonrelativistic velocities...

each of these angles and hence is a subgroup of the conformal group of spacetime. To see both angles respected, view the article biquaternion. There a...

(UTC) While certain theories may require flat spacetime, other theories don't. To suggest that curved spacetime is a requirement is to pre-suppose that the...

dimensions forming a problematic complication. See spacetime: privileged character of 3+1 spacetime for more on this concept. The coordinate time and spatial...

my article on pp-wave spacetimes. For anyone who has been following the development of my planned article on plane wave spacetimes, when I tried to write...

length along a timelike curve. What the author should have said is that spacetime curvature can cause the divergence of null geodesics as they move outward...

significance in physics: it is the point symmetry group of Minkowski spacetime. It is the group of 4x4 matrices L with the property L^T g L = g where...

without invalidating the basic idea. Wheeler, A journey into gravity and spacetime (1990) pp.118, "Einstein's 1915 battle-tested and still-standard law of...

Talk 22:59, 18 July 2005 (UTC) Should the GIF of spacetime being warped be moved down to the Spacetime as a curved Lorentzian manifold section? For the...

de Sitter space to the Poincaré group, allowing a unification of the spacetime translation subgroup and Lorentz transformation subgroup of the Poincaré...

mi) south-east of the Auckland City Centre. In the absence of abnormal spacetime curvature the Auckland region, we should probably decide whether Clevedon...

stackexchange.com/questions/3230/what-was-the-motivation-for-minkowski-spacetime-before-special-relativity/3232#3232 and parts of history as given before...

individual components) to have consistent dimensional units and for the spacetime 4-vector name to match the spatial 3-vector name, which is helpful for...

He explores the positional probability equation arising from a random spacetime metric and comes up with Schrodinger's eqn. Santos only mentions vacuum...

structure being used is unclear and should be stated. In particular, is it spacetime algebra with i being the unit pseudoscalar (as would be suggested by the...

compact manifold (e.g. CY3) to replace a noncompact one, turning the spacetime M4xR6 into M4xCY3 by fiat. We do not require that there exist an isometry...

Alternative Names section. Feynman's heavy computational use of his eponymous spacetime diagrams as graphs of particle QED was firmed up, pedagogically, by Dyson's...

The article should include an explanation of the difference between spacetime and gravity. In the rod&bead experiment it is unclear why the gravitational...

'smears out' divergences. Proponents like Alain Connes claim that a quantum spacetime based on noncommutative geometries will be at the heart of a (still to...

copy of here: https://archive.org/details/scanned-documents-1. How would I cite this on the article? LoveCyberSpacetime (talk) 03:46, 9 July 2025 (UTC)...

stress-energy tensor of a spacetime vacuum". The current version doesn't indicate the difference of "quantum vacuum" applied to "spacetime" vacuum. Your choice...

speed, velocity, time, distance once you step out of the formalism of spacetime geometry. That is not to say an attempt should not be made. The underlying...

This is an archive of past discussions about Spacetime. Do not edit the contents of this page. If you wish to start a new discussion or revive an old...

diagram the article should remain illustrated just by the more abstract spacetime diagrams currently in use. — Dan Leonard • talk • contribs 18:42, 28 September...

own set of Einstein field equations. That's kinda like having 'parallel spacetimes', one with positive and one with negative masses, which can still interact...

gone further, by incorporating matter wave clocks into the fabric of spacetime. He imposes the periodicty as an initial constraint on the particle, i...

how curvature of spacetime can cause acceleration. The geometry of spacetime tells matter how to move; things fall because spacetime is curved. The golf...

quote from that article): For two operators A(x) and B(y) that depend on spacetime locations x and y we define: T { A ( x ) B ( y ) } := { A ( x ) B ( y...

and supporting pressure due to Planck level exclusions to the smooth spacetime of general relativity with quantized space and time (Planck length and...

favorite. The only suggestion I can make is to replace space and time with spacetime in the first sentence. Nick Mks 20:36, 30 November 2006 (UTC) I like this...

soundwaves) but in cosmology it is instead related to "the expansion of spacetime" (http://www.astronomy.ohio-state.edu/~pogge/Ast162/Unit5/expand.html)...

You listed some examples of spacetimes which admit a constant Petrov type (III, N, D and O) - do you know of any spacetimes that are everywhere type I...

gravity, spacetime will be flat and though tremendously dense, the matter will be weightless. Ideally, the degree of dilation (stretch) of spacetime (space...

unambiguously wrong. But essentially, it conveys the idea that the Kerr spacetime singularity having a ring structure is essential for it to act as a wormhole...

very clearly (with a link) the notion of an *in*variant quantity like spacetime distance between two events. (The existing article starts off in this...

form when a mass is sufficiently compacted to the point that it deforms spacetime and creates a gravity field that is too strong for even light to escape...

symmetric spacetime defined by a function m(r1). Steve Crothers has devised an even more general expression for spherically symmetric spacetime. We have...

Need to define projectives on any manifold first then specialise to spacetimes. ---Mpatel (talk) 13:12, August 28, 2005 (UTC) Well, you need something...

write some similar stuff without using spacetime geometry, and to be honest I would rather battle through spacetime geometry. Foucault (talk) 14:46, 25 September...

introduced by KS. It is motivated by the fact that all curvature stiffness of spacetime has its origin in the vacuum fluctuations of all quantum fields in the...

specially by enthusiastic beginners, either to define some sort of invariant "spacetime area" X*T = X'*T', or to derive some sort of "velocity transformation"...

not ours (eg, for general spacetime metrics), so it's not necessarily related only to our universe, but really to any spacetime you like. Also, I imagine...

necessarily to be an illusion. As is also predicted by the flatness of spacetime and simple Newtonian calculations that are not allowed to be published...

are separated by the Cauchy Horizon (and therefore could not meet in spacetime). S.N. Hillbrand 02:11, 13 Apr 2005 (UTC) This article cites a highly...

WaysToEscape (talk) 04:50, 10 June 2009 (UTC) : 2008 In Phi Knit Knot Point in Spacetime: According to escatology, the Fibonacci sequence, as do the scriptures...

This IP address is registered to Qwest Communications International Inc. in Denver, Colorado, and also appears to be geolocated in Denver. ---CH 18:41...

define x_{0} to be c t instead of t as is done now in the "Physics in spacetime" section. People reading that part of the article surely are able to understand...

complete frame for such an observer, one that is meant to cover all of spacetime, you'll run into difficulties (there'll be a horizon, for one). Markus...

...

Gravitation (Misner, Thorne, Wheeler), General Relativity (R.M. Wald), or Spacetime and Geometry (S. Carroll), so this claim is utter nonsense. If this isn't...

January 2026 (UTC) Taylor, Edwin F.; Wheeler, John Archibald (1992). Spacetime physics: introduction to special relativity (2nd ed.). New York: W.H....

(talk) 22:09, 14 April 2013 (UTC) Thanks. Your second point, assumes that spacetime is continuous not discrete. SJK (talk) 08:56, 20 April 2013 (UTC) Not...

does. Where SRT does not apply is in the presence of gravitation. See Spacetime_diagram#Accelerating_observers Prokaryotic Caspase Homolog (talk) 11:59...

it stands, it is false: the geometry of the four-dimensional Minkowski spacetime is not hyperbolic. Even a space-like flat section of it is a Euclidean...

understand is what an isometry is. It is a way in which the contents of spacetime could be shifted that would not affect the proper time along a trajectory...

same mathematical nature, and not merely calculators, but spatiotemporal/spacetime generators + self-caused due to their foundational logic [logicogony:...

modes -- there is no chiral fermion doubling in 0+1d; but only in even spacetime dimensions. >> "Eichten-Preskill model": I'm happy with including this...

non-string theory based spacetimes (because string theory gives a limited amount of universes; but there is no proof that spacetimes of different foundations...

four-dimensional spacetime! I don't get what sort of calculation on a single ?something? in the anti-de Sitter space looks like multiple particles in spacetime. This...

the fourth axis of the spacetime manifold. Special relativity showed that time cannot be understood except as part of spacetime, a combination of space...

in a flat spacetime. Create an Alcubierre bubble around it. Let it travel to a point B. Then switch off the Alcubierre drive. The spacetime is the flat...

assumption of continuity of spacetime? Are gravitons needed in LQG, or is the gravitational field represented by the structure of spacetime itself? (From before...

December 2023 (UTC) both space and time are the 4th dimension, known as the spacetime dimension —Preceding unsigned comment added by 24.189.153.102 (talk) 13:10...

("spatial") is non-sensical. Gravitational lensing comes from the curvature of spacetime and it doesn't care whether that curvature was sourced by conventional...

matter that began to rapidly expand at one point, but spacetime itself. Therefore, for the spacetime universe to be expanding, that includes time. Just because...

there. However I don't see anything particularly unlikely about it. If spacetime is asymptotically flat or hyperbolic, and the simplest model consistent...

in what is, which was decidedly non-mathematic prior to the point in spacetime that my first edit ever graced this 'category list'. Some unsolicited...

debate about this interpretation. See http://plato.stanford.edu/entries/spacetime-holearg/ for general discussion. I'm new around here, but I hope it's...

geodesics in a conformally transformed spacetime do not correspond to geodesics of the original (physical) spacetime. So you might ask what *do* they correspond...

The first sentence is A black hole is generally defined as a region of spacetime from which no information-carrying signals or objects can escape. sourced...

supplanted by the concept of spacetime. This is incorrect. Do we hear anyone ask, "What spacetime is it?" or "How much spacetime did it take for the ambulance...

and/or SO(n) representations applies to zero-dimensional spacetime, not 4-dimensional spacetime. To get Dirac spinors, one needs to build a spin structure...

Step Toward Pregeometry I: Ponzano-Regge Spin Networks and the Origin of Spacetime Structure in Four Dimensions" by Norman J. LaFave (GR-QC 9310036) (1993)...

only be defined on spacetimes which exhibit continous time translational symmetry. Most prominently Euclidean or Minkowski spacetimes that pretty much account...

that Minkowski took a spacetime (and implicitly Euclidean?) approach, and the other people took (by implication) a NON-spacetime and non-Euclidean approach...

Williams, http://arxiv.org/abs/hep-th/0609125 Deviation of geodesics in FLRW spacetime geometries, George F R Ellis, Henk van Elst http://arxiv.org/abs/gr-qc/9709060...

Newtonian mechanics space is implicitly Euclidean. In special relativity spacetime ("Minkowski space") is explicitly non-Euclidean. In general relativity...

quantum gravity (LQG) is a proposed theory of spacetime which is built from the ground up with the idea of spacetime quantization via the mathematically rigorous...

(UTC) On the article it talks about 11-dimensional spacetime. Shouldn't this be a 12-dimensional spacetime with an eleven dimensional space? I don't know...

dF=0 and *d*F=j. The first is invariant under all diffeomorphisms of spacetime. The second is only invariant under transformations which preserve the...

travel time allowing the observer to calculate the events origin point in spacetime does not change the fact that his observation is happening only in the...

Varićak described Lorentz boosts as actions of the unit hyperbola on spacetime using hyperbolic functions. The great contribution of Mileva Maric and...

once again, where quite a few folks baulk at the idea that it is "just" spacetime curvature. Our understanding of a phenomenon and the phenomenon itself...

Herman Minkowski in 1908 uses hyperbolic orthogonality in this sense: In a spacetime plane a worldline has a tangent vector. A line hyperbolically orthogonal...

they observe. Attempting to always reconcile observations with true 4D spacetime coordinates and establishing order and causality of events would be a...

units of the 3-current and the charge density in a space-like slice of spacetime. Current density has units J = J[Q/(D^2T)], and charge density rho=rho[Q/D^3]...

15:13, 11 January 2017 (UTC) Technically speaking, in terms of Minkowski spacetime and both general or special relativity, it has not occurred yet in our...

But that's a very good thing since the notion of manifolds and all of spacetime research is problematic anyway (somewhat for this reason and other assumptions...

serious limitations. Much like spacetime is undeniably useful, even essential for formulating metric theories of spacetime, but according to some approaches...

of the solution against perturbations, the probabilistic nature of the spacetime foam inside the BKL singularity, aging of the singularity, etc. I may...

x^{\alpha }=\mathbf {J} ,} I think because our dimension is composed of four spacetime, we should use four coordinate indices. But I'm still not sure about converting...

@JamesBWatson: When declining PRODs, or contesting them could you please add the template above ({{Old prod full}})? Thanks! (t) Josve05a (c) 23:42, 16...

F’ ! The Lorentz transformations are an intrinsic Physical property of Spacetime! That is completely forgotten in the traditional presentations ! --Chessfan...

23:49, 2 June 2011 (UTC) The first sentence in the section "Admissible Spacetimes" is "The fundamental strings of string theory are two-dimensional surfaces"...

of section "Physics in spacetime" should go with it because that subsection depends on notation defined in "Physics in spacetime". JRSpriggs 06:40, 28...

composed of gravitons) is created only in situations where the curvature of spacetime is oscillating contains at least one error. This seems to have involved...

...

of the spaceship. The key equation in special relativity is that the spacetime interval (s^2 = x^2 - t^2) is the same in all reference frames. Consider...

gravity’s rainbow Modified (A)dS Schwarzschild black holes in rainbow spacetime or just try this Google Scholar search. TJRC (talk) 21:26, 2 April 2015...

equations underlying the analysis of Baryogenesis implicitly assume a FLAT spacetime? What if the Cosmos is CLOSED, so that the early universe was a highly...

a spacetime fabric. I've analysed the atom as a capacitor using Catt's stuff in Electronics World, August 2002, and gravity using Catt's spacetime fabric...

To-do list for Global spacetime structure: edit · history · watch · refresh · Updated 2006-01-25 Tasks for expert: cite Hawking & Ellis and textbooks...

inkling that most or all residents of Tau Alpha C have godlike powers over spacetime (and therefore the Traveler is not just some mild-mannered engineering...

theory any global-function on a 'space' (I would call it y-space for my spacetime stuff, perhaps y=f^(-1)(W_hat(x)) for some symmetry to resemble 'cubes'...

argument of Spacetime being the Aether replacement is well handled. Admitting that scientists fought back against other scientists when Spacetime was called...

2007 (UTC) The sentence "Anti de Sitter spacetime has closed time-like loops" uses the term "anti de siter spacetime" for the first time in the article. I...

meters, would create such "crisp" curvature in spacetime, that it would "buckle" or "nipple" spacetime into a singularity. 66.235.27.181 (talk) 02:19...

(Talk) 15:18, 11 April 2006 (UTC) Prior to my edit, there was a claim that spacetime might be five dimensional. I'm pretty up on these topics, and I've never...

difficult to distinguish a warping of spacetime from a modulation of c. Einstein's GR view is that c is fixed and spacetime warps. Dicklyon (talk) 05:37, 17...

In general relativity, in any region small enough for the curvature of spacetime to be negligible one can find a set of inertial frames that approximately...

reference defines a coordinate system to be imposed on a spacetime. It is not the spacetime itself. What McCrea is keying on is that the frame of reference...

that's h → 0. In the case of SR, that's v/c → 0. In GR, that's flat spacetime + v/c → 0. Yes the starting points are different, but the landing place...

described as being composed of fluctuations in the spacetime environment and therefore fit sensibly in a spacetime framework. -Inowen (nlfte) 19:49, 29 August...

the same, that mass will bend spacetime. So the sentence above is not correct - an electric field will bend spacetime - and so, presumably, will the...

constituent objects which compose spacetime itself, not just objects in spacetime. Spacetime waves prove a fabric like form of spacetime which substantiates string...

name(s) and date. Some works on gravitation are so massive they warp spacetime themselves (Misner, Thorne & Wheeler 1973); yet Einstein (1915) presented...

shouldn't neglect the most basic stellar models, static spherically symmetric spacetimes in which a perfect fluid interior region is matched to the Schwarzchild...

the input. Evans claims that such circuits are 'extracting energy from spacetime'. — Preceding unsigned comment added by 2606:A000:6013:700:910C:5E93:D90C:9F73...

also N=1 supersymmetry and N=2 supersymmetry, and in other numbers of spacetime dimensions there may be others. I'm not sure what you mean by "all N=4...

be inseparable features of spacetime" - a poor, redundant construct; what else would time and space be but part of spacetime? the previous, "Modern physics...

speed of light principle applies to objects moving through spacetime, not the fabric of spacetime itself moving. In any case, a beam of light would beat our...

theory aren't really spacetime dimensions. Heterotic string theories are supersymmetric string theories living in ten spacetime dimensions. I believe...

n {\displaystyle n} -dimensional tangent bundle at each point in the spacetime manifold M {\displaystyle M} .. A tetrad (n-bein) is actually the special...

situation given by ordinary Special Relativity, where any two events in spacetime with a time-like separation can, in an appropriate reference frame, be...

geometry attracting any interest whatsoever. Removed bizarre reference to spacetime being possibly eight dimensional. Although I can't rule out the possibility...

studied. What I can tell you is that these derivations must assume that the spacetime is uniform, isotropic and velocity-invariant, meaning that the properties...

fundamental objects are quantum fields which are defined at all points in spacetime: the fermion field ψ {\displaystyle \psi } , which accounts for "matter...

by the geometric properties of spacetime. Point 1) is part of the foundation of General Relativity. This is why spacetime is described as a Riemannian manifold...

curvature of spacetime. Unlike in Newtonian gravity, where the gravitational potential is a scalar field, general relativity uses the metric of spacetime to describe...

is the mathematical physics reason why particles in a four-dimensional spacetime are either fermions or bosons." Can someone knowledgeable put a link to...

over-pedantic. Anyway, if "the universe" is understood to include all of spacetime, then "exists in our universe" is true regardless of whether it exists...

particles travel through space, not spacetime. In spacetime, the particles occupy positions. The whole of spacetime is a single construct. "The atoms that...

say "The Universe is all of spacetime and its contents.", but then I wonder if we should be using the concept of "spacetime" in the first sentence of an...

...

for instance, a Dirac wave function is a bispinor at every point in spacetime. We could also say that every 4-dimensional complex vector space endowed...

represent the time, so that our quaternions would describe a four-dimensional spacetime, rather than just space. We might think that this should be highly appropriate...

here: Whenever two masses orbit each other, the combined effect of the spacetime curvature of the moving objects produces gravitational waves which carry...

2022 (UTC) @Yakikaki: no, not at all! We usually give DYK nominators the spacetime to sort out their nominations to meet criteria, if they want :) theleekycauldron...

gravitation in curved spacetime." In reality, general relativity tells us that gravitation manifests itself as the curvature of spacetime. Again, that's not...

presentism, not presentism, etc. and more on philosophy of science: Einstein, Spacetime, Proper time, Relativity of simultaneity, Rietdijk–Putnam argument, Penrose...

...

4 common dimensions. Unified Strings 21 or 19 Dimensions & Aspects of Spacetime adds the analysis of time as 6 aspects of 'regular time' + 4 aspects of...

Although this is a US TV program, Wikipedia is an international resource, and US TV is also sold internationally. If the program will be available in March...

...

...

nitty-gritty of the actual symmetries. There should also be a link to spacetime symmetries somewhere in this article. Just a few ideas. MP (talk) 09:46...

variant of the american one. Unless I have a complete misunderstanding of spacetime, these two are mutually exclusive. I think it's pretty clear that the...

2013 (UTC) That only discusses flat spacetime and 'conventional' speeds. For an Alcubierre drive a curved spacetime is required and locally everything...

cosmological constant problem, the hierarchy problem, singularities in spacetime, emergent complexity and turbulence, the measurement problem, etc. For...

"stress-energy tensor" mathematically describes each point in four dimensional spacetime it is linked to the mass and energy distribution of normal space (nonsubspace)...

for. Event horizons are often tricky to find generally. In stationary spacetimes they coincide with Killing horizons, which are easy to find if you know...

Done. Olaf Davis (talk) 18:02, 19 June 2009 (UTC) Energy Density and Spacetime Curvature section titles shouldn't be capitalized. Fixed. Olaf Davis |...

deforms space and time in a four-dimensional concept that Einstein called spacetime. The black hole was formed in the disk at a distance greater than 3 kpc...

first edition. --Jbergquist (talk) 05:29, 19 February 2008 (UTC) See Spacetime#Mathematical concept for very early consideration of time as a fourth...

...

This seems kind of impossible to me, considering current knowledge of spacetime properties. Could someone please fix this? Andreas Willow (talk) 11:02...

a region of spacetime containing time travelers cannot be any different from the local laws of physics in any other region of spacetime". In other words...

spacetime, which has a degenerate metric. Hyperbolic trig is the kind you need for Lorentzian manifolds (special relativity and the curved spacetimes...

co-rotataing stars do their thing, they are twisting the shape of spacetime in the neighboring spacetime (and to an ever-lessing extent beyond themselves). So what...

gravity as curvature of spacetime, and leaving for special relativity a hypothetical empty spacetime (aka Minkowski spacetime) as a special (or limiting)...

describes a physical system whose world line loops through the same point in spacetime. That physical system can be an object, an event, information, or any...

that a gravitational field exists in this view of spacetime. It is as simple as that. Curved spacetime makes it so that all observers will perceive inertially...

at a diffrent place. What is amazing is that both yeild matter out of spacetime. They are both background dependent theories. The metron is a generalization...

travelling through and the curvature of spacetime. Do we need to also include the qualification "in flat spacetime"? Tercer (talk) 15:36, 14 August 2022...

reliable sources can be found that demonstrate that 1) Masreliez's expanding spacetime theory is mainstream science and 2) this is relevant to the current article...

It is requested that an image or photograph of Spacetime wave packets be included in this article to improve its quality. Please replace this template...

to spacetime, has negative curvature. What matters in the present context is the spacetime curvature, that is, the deviation of the overall spacetime metric...

relativistic view that spacetime is curved. You can't have a non-uniform acceleration field in a flat spacetime. You can in a curved spacetime. In addition to...

general relativity physics, in cases involving small enough regions of spacetime where gravitational variances are negligible, physical laws are Lorentz...

calculus syntax. Describe metric tensors and how they describe the shape of spacetime, and are used to lower and (with its inverse) raise tensor indexes. Describe...

needs to be a discussion of event horizons produced by the expansion of spacetime. As it is, the article is too specific. (--User:24.43.40.79, 1 June 2002)...

sarcastic. If not please read up on Euclidean, spherical and hyperbolic spacetime curvatures in relation to the cosmological constant (assuming ΛCDM). I...

Um, hmm. Morwen - Talk 20:37, 5 Jul 2004 (UTC) It should be noted that spacetime is implied through using the stardate. One's time depends upon one's position...

function of the pineal gland in functioning as a conduit between our spacetime reality and the inverted timespace reality of dreaming and out-of-body...

connection to our spacetime); but iii) Quarks become sheer scientific manipulation when assumed as physical particles in our spacetime for numerous reasons...

contained in the 'distance' from the beginning '0' to the end '1' in the spacetime (0<1). This can be either linear transformation through units of variable...

(UTC) Although some scientists say that there can be upwards of four spacetime dimensions, this is untrue. There can only be more space dimensions. This...

conception that points of spacetime are really the same thing as equivalence classes of coordinate transformations (i.e. that spacetime is the quotient of the...

producing a series of deformations that exploit the curved topology of spacetime, without any exchange of momentum or energy: http://dspace.mit.edu/bitstream/handle/1721...

swap roles: one would get back in time before one can be squashed. A spacetime loop would be formed, and there would be no way to escape the loop, and...

expansion of space" not "Metric expansion of spacetime". The metric of space changes. The metric of spacetime also changes inasmuch as the spatial part of...

to be stored in the gravitational field itself. In general relativity, spacetime has self-interaction. For example, it is possible to create a black hole...

the equation is "assuming the special relativity case of flat spacetime". If spacetime is flat is the potential energy zero? (I'm over my head here.)...

a blackhole of spacetime. If the portal were still open when this happened, it would destroy the primary universe and all of spacetime. How this works...

history of this section is broken due to the text having been moved from Spacetime). I am the creator of both animations (one under a previous user name)...

deformation, 2. negligible friction with spacetime itself, because the noninertial observer distorts his mapping of spacetime and thus the energy of the void isn't...

creation mechanism. That may be a consequence of all background dependent spacetime quantization theories. Anway the POV warning is directed at HEIM. So put...

Mugur-Schächter, M. (1991). "Spacetime quantum probabilities, relativized descriptions, and popperian propensities. Part I: Spacetime quantum probabilities"...

spacetime is kind of radical. It was amazing how the attendance swelled to overflowing when Juan Maldacena presented his theory of emergent spacetime...

is wrong to claim that it is always c or -c. If we have a stationary spacetime with Killing Vector ξ t = ∂ ∂ t {\displaystyle \xi _{t}={\partial \over...

between to spacetime events. The flaw in that argument (as pointed out by the ref) is that the singularity is not a single point in spacetime, but actually...

anti-de Sitter space, it is possible to define a notion of "boundary" of spacetime at infinity." This sentence needs a lot more explanation and details,...

last line, as I can't see that "constrains the future to a quadrant of a spacetime plane" actually have any meaning in this context. Apologies if I'm missing...

2003, Vol 52, Issue 5, pp 1660-1664 [4] E Baird 'Relativity in Curved Spacetime: Life without Special Relativity.' 82.69.31.176 (talk) 00:19, 5 January...

phenomenon due to the "ripples" caused by the observer traveling through spacetime. He has been on the board of the art magazine Leonardo (MIT Press). ==Philosopher==...

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closed string lives, which is just the number of dimensions of spacetime (remember that spacetime coordinates are just degrees of freedom of the bosonic string)...

horizon. Patallurgist (talk) 08:04, 27 February 2019 (UTC) Links to the 'spacetime' article. What the heck is the point of this link? How does it explain...

is the claim that the hypernym of the universe is the multiverse and spacetime which are eternal simply because they are mathematically correct thus...

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between two inertial observers section which is very good and the The spacetime geometry of velocity time dilation section which is also very good and...

67 (talk) 06:54, 2 July 2013 (UTC) In Galilean relativity or Minkowski spacetime, velocity in general is a vector, so talking about "to each other" is...

written down (they're in the main article Maxwell's equations in curved spacetime) and what really is our aim in that little subsection ? The equations...

definitley be here, more than SR), allowing a coherent description of spacetime coords before other physical quantities, blend the short section transformation...

(2015) “A brief report on the dematerialisation and rematerialisation of spacetime: Anarchives, Site-Specific Greenhouse Superstructures, and Social (Hyperobjective)...

(UTC) Yes it is. Take a pseudometric space with signature (3,1), like spacetime. It has the distance function: d2 = x2 + y2 + z2 - ct2 T is an elapsed...

cosmological redshift and its apparent acceleration is caused by the flatness of spacetime (and the necessary compensation of the curvature of space through time...

to the existence of spacetime there could be no "point" at which spacetime could appear at, and there is no time before spacetime. Also the "absurdity...

heard that the vast majority of possible spacetimes are pathological. But isn't it true that for any spacetime actually used in general relativity the...

Tasks for expert editors: write adequate articles on Penrose diagrams, conformal compactification and revise/move/delete the presently absolutely awful...

location in spacetime would be a set of points in spacetime. As a study of Earth's climate system is of the "longitudinal" variety, spacetime would reduce...

During World War II, the development of the cavity resonance wavemeter for use in radar, together with precision timing methods, opened the way to laboratory-based...

Tasks for expert: cite Hawking & Ellis and textbooks giving a particularly good account, like Wald cite Living reviews review article on conformal infinity...

discussion. Cadwgan Gedrych 18:29, 6 June 2006 (UTC) In the 'Physics in spacetime' section in this article, it's claimed (in fact I think I wrote it) that...

gravity is theorized to exert acceleration by graviton exchange. Why is spacetime curvature inconsistent with a gauge field? Eebster the Great (talk) 05:56...

is a fact, but "apples fall if you drop them because of a curvature in spacetime" is a theory. Gravity can thus either refer to a fact (the observation...

like the whirl of galaxies aside. (Though since revolving matter drags spacetime along with it a little, would the comoving frame pick up some of its velocity...

effect of dark matter and ordinary matter on the observed curvature of spacetime. In general, dark matter is believed to make up 26.8% of the universe's...

the matter from which they're produced) suggesting classicaly theorised spacetime-warping... ...but how do you spontaneously produce something like that...

extra dimensions of spacetime for their mathematical consistency.” be changed to “String theories require extra dimensions of spacetime for their mathematical...

(talk • contribs) In the "Sisters of the Sun" episode of the "Cosmos A Spacetime Odyssey" TV show they say she lost her hearing during a bout of Scarlet...

{\displaystyle {\mathcal {M}}} denotes an n {\displaystyle n\,} -dimensional spacetime. A Lagrangian form Λ : J 1 π → Λ n M {\displaystyle \Lambda :J^{1}\pi...

(redshift) is intimately tied in to spacetime geometry, and since spacetime isn't flat (unlike special relativity's spacetime) the special relativistic redshift...

(and maybe other conditions) that is the fundamental constant of the spacetime in which we live'. I do not think that it is good English to write 'The...

General relativity describes mass as changing the shape of spacetime, and the shape of spacetime as describing how matter moves through space. ...makes slightly...

article states, "The time delay is caused by spacetime dilation, which increases the path length." The term spacetime dilation, although accurate, may be unclear...

Peter Gabriel Bergmann, defined Page 57 Relativity: modern large-scale spacetime structure of the cosmos by Moshe Carmeli, defined page 99 An introduction...

different from zero in spacetime regions with gravitational fields. It is interesting to note, however, that at any given spacetime point one may choose...

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