Space Time Continuum


How do you write about Space Time Continuum explaining what Time means. In our 3D reality where we can only think linearly, to make any one understand that there is no Past Present and Future is virtually impossible. That, there is no Destiny nor Life having Karmic reprisals, that the only thing to learn is the lesson itself. In Book 11 of St. Augustine's Confessions, he ruminates on the nature of time, asking,

"What then is time? If no one asks me, I know: if I wish to explain it to one that asketh,
I know not." He settles on time being defined more by what it is not than what it is.
What does science say?


In physics, space-time is any mathematical model that combines space and time into a single continuum. Space-time is usually interpreted with space as being three-dimensional and time playing the role of a fourth dimension that is of a different sort from the spatial dimensions. According to certain space perceptions, the universe has three dimensions of space and one dimension of time.

By combining space and time into a single dimension, 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.
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 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 intense gravitational fields, which can slow the passage of time.


Concept with dimensions.
The concept of spacetime combines space and time to a single abstract "space", for which a unified coordinate system is chosen. Typically three spatial dimensions (length, width, height), and one temporal dimension Time 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, rather than just points in space, i.e. time is added as another dimension to the coordinate grid. This way the coordinates specify where and when events occur.


In the past, Time was believed to be independent of motion, progressing at a fixed rate in all reference frames; however, later experiments revealed that time slowed down at higher speeds of the reference frame relative to another reference frame with such slowing called "time dilation" explained in the theory of "special relativity".

Many experiments have confirmed time dilation, such as atomic clocks onboard a Space Shuttle running slower than synchronized Earth-bound clocks and the relativistic decay of muons from cosmic ray showers. The duration of time can therefore vary for various events and various reference frames. When dimensions are understood as mere components of the grid system, rather than physical attributes of space, it is easier to understand the alternate dimensional views as being simply the result of coordinate transformations.

The term spacetime has taken on a generalized meaning beyond treating spacetime events with the normal 3+1 dimensions. It is really the combination of space and time. Other proposed spacetime theories include additional dimensions—normally spatial but there exist some speculative theories that include additional temporal dimensions and even some that include dimensions that are neither temporal nor spatial.

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 , but the existence of more than four dimensions would only appear to make a difference at the subatomic level.



 
Philosophy of space and time


 

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