Pl.explain the term spacetime?

Answer 1

Space is defined as the distance between two points.It is measured in units of meters.

Time describles an object's motions between these points(Space). It is measured in units of seconds.

The ratio of space and time is defined as velocity. it has the Units of meter/seconds . The square of the ratio is defined as Energy per Unit mass.

The product of space and time is in Units of meter-seconds, and is an indicative Unit describing the proportion of a volume in the Universe as a function of time. The Greater the time the greater the volume containment.

Spacetime equals a Force divided by Power existing in a particular location of the Universe per Unit area.

Spacetime = Force/(Power/area) in meterseconds units.

So spacetime is another way of relating the power and force locked in the Substance which is existing in the volume of the Universe.It was at one time called the "Aether". Now its called dark Matter.

Since the Universe is not an homogenous system Time varies at different location of space in the volume of the Universe.
And the Ratio of Space and Time is different at different Frames of Reference in the Universe.

This is the simplest explanation that can be giving without the Use of abstract manifolds. In more concrete definable and understandble terms.

Answer 2

In physics, spacetime is any mathematical model that combines space and time into a single construct called the space-time 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 theory, 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 spacetime over Euclidean space is optional, as time is independent of mechanical motion in three dimensions. In relativistic contexts, however, time cannot be separated from the three dimensions of space as it depends on an object's velocity relative to the speed of light.

The term spacetime has taken on a generalized meaning with the advent of higher-dimensional theories. How many dimensions are needed to describe the universe is still an open question. Speculative theories such as string theory predict 10 or 26 dimensions (With M-theory predicting 11 dimensions; 10 spatial and 1 temporal), but the existence of more than four dimensions would only appear to make a difference at the subatomic level

Answer 3

Hope this helps some

1*
In physics, spacetime is any mathematical model that combines space and time into a single construct called the space-time 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 theory, 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 spacetime over Euclidean space is optional, as time is independent of mechanical motion in three dimensions. In relativistic contexts, however, time cannot be separated from the three dimensions of space as it depends on an object's velocity relative to the speed of light.

The term spacetime has taken on a generalized meaning with the advent of higher-dimensional theories. How many dimensions are needed to describe the universe is still an open question. Speculative theories such as string theory predict 10 or 26 dimensions (With M-theory predicting 11 dimensions; 10 spatial and 1 temporal), but the existence of more than four dimensions would only appear to make a difference at the subatomic level.

2*
space-time

–noun 1. Also called space-time continuum. the four-dimensional continuum, having three spatial coordinates and one temporal coordinate, in which all physical quantities may be located.
2. the physical reality that exists within this four-dimensional continuum.
–adjective 3. of, pertaining to, or noting a system with three spatial coordinates and one temporal coordinate.
4. noting, pertaining to, or involving both space and time: a space-time problem.

Answer 4

Agree with the above answerer. :-)

The theory of relativity says that time cannot be treated absolutely separately from space, only in one observer's relative view. So space and time together describe a four dimensional universe. This is called Spacetime.

http://www.cpepweb.org/main_universe/glossary.html#spacetime

http://www.google.co.in/search?hl=en&rlz=1B2GGIC_enIN225IN225&defl=en&q=define:spacetime&sa=X&oi=glossary_definition&ct=title

Hope it helps:)

Answer 5

In short, it basically means that time and space cannot exist with out each other. They are one coalesced unit. Einstein was the first to discover that you cannot have one without the other.
Space and time are intrinsically tied together.

Answer 6

www.google.com - space time