A NEW THOUGHT

                         HELLO GYZZ I AM BACK WITH NEW STUFF:

                                     Time Is The Fourth Dimension

Simply stated, the first three dimensions are used to specify an object’s location/movement in space (forward-backwards, left-right and up-down), while the fourth dimension locates its position in time. All four dimensions are used to specify completely the location or dynamism of an object in space. Collectively the four dimensions are inseparably interlinked and known as space-time.

                                      Three Dimensional Creatures

Being three dimensional creatures (possessing length, width and height), humans are unable to see the fourth dimension as our physical world is constructed within these three physical dimensions. We might feel or intuit time’s presence, but we can never actually detect it with our three-dimensional senses because it extends beyond our universe. Humans only perceive the fourth dimension time as memories lodged at variable intervals, the result of which is our apparent perception of time moving forward in a straight line. However, time still exists as a dimension and objects can cross it in a similar way as they do the others, although three dimensional like humans can only move in one direction forward through time. If we could see an object’s fourth dimensional space-time (or world-line) it may resemble a spaghetti-like line stretching from the past to the future showing the spatial location of the object at every instant in time.

                                        Space And Time Inseparable

Space And Time are simultaneous phenomena (like mass and energy), and together form the fabric of the universe known as space-time. A demonstration of four dimensional space-time’s inseparability is the fact that, as astronomers often remind us, we cannot look into space without looking back into time. We see the Moon as it was 1.2 seconds ago and the Sun as it was 8 minutes ago.

Also, in accordance with Einstein’s General Theory Of Relativity, a massive object in space stretches the fabric of both the space and time around it. For example, our Sun’s mass bends its surrounding space so that the Earth moves in a straight line but also circles within the Sun’s curvature in space. The Sun’s affect on time is to slow it down, so time runs slower for those objects close to the massive object. Interestingly, gravity is the result of mass stretching the fabric of the space-time around it. Gravity also has an infinite range such that no matter how far apart two masses are in space they will always experience some gravitational pull towards each other. Theoretical physicists have tried to explain this phenomena in terms of gravitation, S-Theory, and M-Theory, but even today a successful quantum theory of gravity is yet to be found.