Confused on relativity.

[Sorcerer]

If there are only two objects. One is the observer and one is that being observed, is there space and time?

Space-Time is one thing right, so one requires the other.

If there are only two objects and nothing for the observer to observe the 2nd object moving relative to how can there be any time?

If there is no time, how can there be any space?

If there is no space how can there be two objects?

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Does space time require 3 dimensions to exist first?

Also sorry for the barrage of questions. I think each deserves a sepeate topic.

[timo]

Most people agree that more than two objects exist in nature. So for a natural scientist these questions are somewhat irrelevant. And the majority of scientists working with/on relativity are natural scientists.

[Strange]

If there are only two objects. One is the observer and one is that being observed, is there space and time?

 

Yes. Space-time can be defined in the absence of any matter, energy, objects, etc.

 

 

Space-Time is one thing right, so one requires the other.

 

It is one thing. All four dimensions depend on the other three.

 

 

If there are only two objects and nothing for the observer to observe the 2nd object moving relative to how can there be any time?

 

The observer observes the 2nd object moving relative to herself.

 

Space and time would still exist, even if there was no way to measure them. (See first reply above)

 

 

Does space time require 3 dimensions to exist first?

 

Space-time requires 4 dimensions.

Edited August 1, 2014 by Strange