Meaning of frames in relativity

[Lakshminarayanan.V]

hi


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

thanks


reg

vln

 

[hellfire]

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:
http://www.fourmilab.ch/etexts/einstein/

 

[R0man]

Sure, I'd be happy to explain the meaning of frames in relativity. Frames in relativity refer to the coordinate systems used to describe the position and motion of objects in space and time. In classical physics, there is a single, absolute frame of reference that is considered to be at rest and all other frames are moving relative to it. However, in the theory of relativity, there is no absolute frame of reference and all frames are equally valid. This means that the laws of physics should be the same in all frames, regardless of their relative motion. This concept was first introduced by Albert Einstein in his famous paper "On the Electrodynamics of Moving Bodies" in 1905.

In this paper, Einstein proposed the theory of special relativity which states that the laws of physics are the same for all observers in uniform motion. This means that if two observers are moving at a constant velocity relative to each other, they will both measure the same physical phenomena. However, if one of the observers is accelerating or in a non-inertial frame, they will measure different physical phenomena. This is where the concept of frames becomes important in relativity.

Frames in relativity also play a crucial role in the theory of general relativity, which was developed by Einstein in 1915. In this theory, the concept of frames is extended to include the effects of gravity. According to general relativity, gravity is not a force between masses, but rather a curvature of spacetime caused by the presence of mass and energy. This means that the laws of physics in a gravitational field will be different from those in an inertial frame.

In summary, frames in relativity refer to the coordinate systems used to describe the position and motion of objects in space and time. They are an essential concept in understanding the laws of physics in both special and general relativity. I hope this explanation was helpful. As for the original paper of AE's, you can find it here: https://www.fourmilab.ch/etexts/einstein/specrel/www/. Best of luck in your studies!