 Relativity Physics and Science Calculator - Time as the 4th Dimension .  Relativity Science Calculator Web Relativity Physics and Science Calculator Time as the 4th Dimension

"There is a fifth dimension beyond that which is known to man. It is a dimension as vast as space and as timeless as infinity. It is the middle ground between light and shadow, between science and superstition; and it lies between the pit of man's fears and the summit of his knowledge. This is the dimension of imagination. It is an area which we call, 'The Twilight Zone'. " - Rod Serling ( 1924 - 1975 )

"There is a great likelihood that time does not exist at all, that it is a redundant concept." - Unknown author

Ok, so we now know about the Lorentz Transformation Equations. So why is time the 4th dimension?

1). From the onset of John Harrison's H4 clock - watch [ 1761 - 62 and 1764 ] where

"Time of longitude, adjusted for latitude, and hence converted to longitudinal distance traveled " and " ... John Harrison's H4 clock - watch [ ... ] relates the idea of time with space - distance " already there had been made a direct connection between space - distance and time. [ see: "Distance and the John Harrison time clocks which measure it" ]

2). Also we know that from before.

It's obvious that in order to describe the position of an event in spacetime that it essentially takes 4 coordinates, namely ( ).

So there you have it: time as the 4th dimension. It's really just a mathematical physics thing.

But how do advanced mathematicians actually write all this down? This then gives us the Lorentz Transformation Equations [ see above ] using some advanced matrix multiplication. Actually we are also verging upon Tensor Analysis which is an advanced form of matrix analysis whose usage Einstein made salient in Special Relativity  mathematics.

In other words, all of the Lorentz Transformation Equations can be written as which is always something to be admired for its mathematical elegance and simplicity!!

The World's Most Accurate Clock source: "Top-precision optical atomic clock starts ticking",
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