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Re: Einstein's Math & Space-time

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Posted by Yelmalio/">Yelmalio on November 15, 1999 13:56:48 UTC

It is that difference, however, that in my mind requires that we seperate SPACE from TIME. They are not one in the same.

Allow me to argue by counter-example.

If time is seperate then it moves/flows seperately. How does it move for different observors, the same or at different speeds. If it moves at different speeds then we have no way of knowing that. This leads to the conclusion, also, that there are boundaries at which time moves differently. This means that all observors have a unique viewpoint and the laws of physics are different in different parts of the Universe. This gets you nowhere fast.

If time moves at the same speed for everyone then we have the Newtonian laws of Physics to play with. There is a major problem here. The laws of Electro-Magnetism as formulated by Maxwell do not work in a Newtonian Universe with all clocks identical. If you transform Maxwells equations via a Galilean transform (where time is absolute) you get a meaningless result. This was the first, famous problem found with the Newtonian model and has been well thrashed out in past.

Only by assuming space and time are the same (spacetime) and applying Lorentz transforms and its predictons(time slows down, length contracts etc) does the problem go away. Also, you have to explain why Mu-Mesons (muons) are observed at the Earths surface when their half-lives are so short they decay before reaching the Earth from where they are created in the magnetosphere. You also have to explain why particles accelerated to near light speed show an energy increase in accordance to E=mc2 as predicted by Einstein. You then have to explain gravitational red-shifting (as observed in lasers fired down a gravitational gradient), paths of starlight being bent by the Suns gravitational field, precession of Mercuries orbit and a host of other observations agreeing with Relativity and its underlying concept that space and time are interlinked as spacetime.

The problem s that what we think of as time is not what time really is. A biological measure of time does not provide a meaningful reference that can be used to define it well enough in order to make predictions of behaviour.

Yelmalio

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