Definitions for spacetime
space·time

WiktionaryRate this definition:0.0 / 0 votes

1. spacetimenoun

   The four-dimensional continuum of the three spatial dimensions plus time.

   An event is a point in spacetime, specified by the coordinates x,y,z and t.

2. spacetimenoun

   An n-dimensional continuum consisting of dimensions of both space & time. Normally spacetime is considered as having 4 dimensions (x, y, z, t), but higher-dimensional spacetimes are often encountered in theoretical physics, e.g. the 5-dimensional spacetime of Kaluza-Klein theory or the 11 dimensions of spacetime in M-theory.

3. spacetimenoun

   A specific region of the universe with mathematically different properties than the surrounding spacetime. Synonymous with "metric" within the context of general relativity.

   "a Schwarzschild spacetime," "a Reissner-Nordstru00F6m spacetime," etc. as opposed to sense (2) describing the universe's spacetime as a whole: "a Minkowski spacetime," "a 5-dimensional spacetime," etc.

WikipediaRate this definition:0.0 / 0 votes

1. Spacetime

   In physics, spacetime is a mathematical model that combines the three dimensions of space and one dimension of time into a single four-dimensional manifold. Spacetime diagrams can be used to visualize relativistic effects, such as why different observers perceive differently where and when events occur.

WikidataRate this definition:0.0 / 0 votes

1. Spacetime

   In physics, spacetime is any mathematical model that combines space and time into a single continuum. Spacetime is usually interpreted with space as existing in three dimensions and time playing the role of a fourth dimension that is of a different sort from the spatial dimensions. From a Euclidean space perspective, the universe has three dimensions of space and one of time. By combining space and time into a single manifold, physicists have significantly simplified a large number of physical theories, as well as described in a more uniform way the workings of the universe at both the supergalactic and subatomic levels. In non-relativistic classical mechanics, the use of Euclidean space instead of spacetime is appropriate, as time is treated as universal and constant, being independent of the state of motion of an observer. In relativistic contexts, time cannot be separated from the three dimensions of space, because the observed rate at which time passes for an object depends on the object's velocity relative to the observer and also on the strength of gravitational fields, which can slow the passage of time. In cosmology, the concept of spacetime combines space and time to a single abstract universe. Mathematically it is a manifold consisting of "events" which are described by some type of coordinate system. Typically three spatial dimensions, and one temporal dimension are required. Dimensions are independent components of a coordinate grid needed to locate a point in a certain defined "space". For example, on the globe the latitude and longitude are two independent coordinates which together uniquely determine a location. In spacetime, a coordinate grid that spans the 3+1 dimensions locates events, i.e. time is added as another dimension to the coordinate grid. This way the coordinates specify where and when events occur. However, the unified nature of spacetime and the freedom of coordinate choice it allows imply that to express the temporal coordinate in one coordinate system requires both temporal and spatial coordinates in another coordinate system. Unlike in normal spatial coordinates, there are still restrictions for how measurements can be made spatially and temporally. These restrictions correspond roughly to a particular mathematical model which differs from Euclidean space in its manifest symmetry.

Anagrams for spacetime »

1. timescape

How to pronounce spacetime?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say spacetime in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of spacetime in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of spacetime in Pythagorean Numerology is: 1

Examples of spacetime in a Sentence

1. Link Starbureiy:

   The Universe became absurd to me the moment I learned that its geometry is flat, and that Minkowski spacetime is non-net positive (0). One can then deduce that energy can be ported into a spacetime via quantum tunnelling. If/when that's the case, then something can literally be created from 'nothing', hence the absurdity.

Popularity rank by frequency of use

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Spacetime
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Spacetime
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=spacetime