Meaning of frames in relativity


can some body take me thru the meaning of frames in relativity.Also please if any one has the links to the original paper of AE's do send them.





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A reference frame is a set of coordinates (spatial and temporal coordinates) that makes possible to define positions and motions of objects with respecto to it. Special relativity describes the relations between inertial reference frames, which are attached to objects not subject to any forces. There exist no inertial frames in which accelerated objects are always at rest, but within special relativity one can define momentarily comoving reference frames, which have the same speed as an accelerated particle at a specific time. Thus it is possible to describe forces other than gravity with special relativity.

Two of the original papers by Albert Einstein can be found at:

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