Spacetime  

From The Art and Popular Culture Encyclopedia

(Redirected from Space-time continuum)
Jump to: navigation, search

Related e

Google
Wikipedia
Wiktionary
Wiki Commons
Wikiquote
Wikisource
YouTube
Shop


Featured:
Train wreck at Montparnasse (October 22, 1895) by Studio Lévy and Sons.
Enlarge
Train wreck at Montparnasse (October 22, 1895) by Studio Lévy and Sons.

In physics, spacetime is any mathematical model that combines space and time into a single construct called the spacetime continuum. Spacetime is usually interpreted with space being three-dimensional and time playing the role of the fourth dimension. According to Euclidean space perception, the universe has three dimensions of space, and one dimension of time. By combining space and time into a single manifold, physicists have significantly simplified a large amount 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 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, however, time cannot be separated from the three dimensions of space because the rate at which time passes depends on an object's velocity relative to the speed of light, and also the strength of intense gravitational fields which can slow the passage of time, and as such is dependent on the state of motion of the observer and is therefore not universal.

See also




Unless indicated otherwise, the text in this article is either based on Wikipedia article "Spacetime" or another language Wikipedia page thereof used under the terms of the GNU Free Documentation License; or on original research by Jahsonic and friends. See Art and Popular Culture's copyright notice.

Personal tools